WO2020256016A1

WO2020256016A1 - Outer wall structure for building, heat-blocking structure, and heat-blocking method

Info

Publication number: WO2020256016A1
Application number: PCT/JP2020/023764
Authority: WO
Inventors: 潤悦島崎; 伊藤　均; 達哉大下
Original assignee: 吉野石膏株式会社
Priority date: 2019-06-19
Filing date: 2020-06-17
Publication date: 2020-12-24
Also published as: JP7175534B2; JPWO2020256016A1

Abstract

The purpose of the present invention is to reduce weight in a concrete building having a framework structure in which heat is blocked using an external heat insulation method, without compromising the heat-blocking performance, the ease of construction, etc. An outer wall (W) having a double wall structure is constructed on an open area (α) surrounded by columns (C) and beams (B) of a concrete building (A). The outer wall is configured from a steel structure wall portion (Wa) comprising intermediate columns (4) having a steel structure, and an inner wall portion (Wb) comprising a steel wall base (12-15). The steel structure wall portion has an outer base surface material (6) fixed to the intermediate columns so as to close the open area. The outside surface (1) of the outer base surface material is positioned in the plane of a vertical surface (V) that includes the outside surfaces (10) of the columns and beams. A heat-blocking material (21) and an outer material (22) are constructed using an external attachment heat-blocking method on the outer base surface (1) of the open area, and a heat-blocking material and an outer material are constructed using an external heat-blocking method on the outer base surface (10) of a structure frame area (β). The heat-blocking material and the outer material form a substantially uniform outer heat-blocking layer (G) that is continuous over the entire area of the outside surface of the building.

Description

Exterior wall structure, heat insulation structure and heat insulation method of buildings

The present invention relates to an outer wall structure, a heat insulating structure, and a heat insulating method of a building, and more specifically, a shaft is formed by a composite heat insulating method in which different types of heat insulating methods (external heat insulating method and external heat insulating method) are combined or used in combination. It is related to the outer wall structure, heat insulation structure and heat insulation method of a building that aims to reduce the weight of the concrete building while ensuring the desired heat insulation performance by insulating the entire outer wall surface of the concrete building of the construction method or ramen construction method. is there.

Generally, a reinforced concrete (RC) structure, a steel-framed reinforced concrete (SRC) structure, or a precast reinforced concrete (PCa) structure (hereinafter referred to as "concrete building") of a frame construction method or a ramen construction method is an RC structure, an SRC structure, or a building. It is composed of pillars, beams, bearing walls, non-bearing walls, floor slabs, etc. of a PCa structure (hereinafter referred to as "concrete structure"). Further, as a heat insulating method for a building, an external heat insulating method, an internal heat insulating method, an external heat insulating method, a filling heat insulating method and the like are known (Non-Patent Documents 1 and 2).

In the external insulation method, a heat insulating material is adhered to the outer wall surface (outdoor side surface) of the structural frame of a concrete building, the entire outer wall surface of the building is covered with the heat insulating material, and the concrete structure frame having a heat storage effect is covered with a heat insulating layer. It is a heat insulating method. For example, in the external heat insulating method described in Patent Document 1, a rigid foamed plastic plate is installed in close contact with the outer surface of the outer wall of the concrete structure, and an exterior material covering the heat insulating material is further applied to the outside of the heat insulating material. Will be done. On the other hand, the internal heat insulating method is a heat insulating method in which a heat insulating material is applied to the inside (indoor side) of a skeleton of a concrete structure having a heat storage effect to form a heat insulating layer inside the skeleton.

The internal insulation method is advantageous in terms of design freedom in architectural design design, workability of building work, maintenance of buildings, etc., but on the other hand, there is a problem that dew condensation (internal dew condensation) is likely to occur inside the wall body. There is a problem that the skeleton of the concrete structure is relatively greatly affected by the environmental load (effects of solar radiation, changes in outside temperature, etc.), and the cooling and heating efficiency is lowered. On the other hand, the external insulation method has problems in terms of deterioration of exterior materials, workability of buildings, maintenance of buildings, fire resistance of buildings, etc., but the structural frame is affected by environmental load (solar radiation, outside). Since it is not easily affected by changes in temperature, etc.), it is advantageous in terms of improving the comfort of the living environment and improving the efficiency of heating and cooling by effectively utilizing the heat capacity of the concrete structure. In general, the comfort of the living environment and the reduction of the environmental load are emphasized, and it is considered that the external insulation method is superior to the internal insulation method in terms of heat insulation performance.

As described above, the external heat insulating method and the internal heat insulating method are heat insulating methods that are functionally or structurally closely related to the heat capacity of the structural frame, and are peculiar to a concrete building having an outer wall having a large heat capacity (that is, an outer wall of a concrete structure). In contrast to this, the external insulation method and the filling insulation method are known as insulation methods for buildings that do not have an outer wall with a large heat capacity, that is, steel-framed or wooden structures. It has been known.

The external insulation method is a heat insulation method in which a heat insulating material is applied to the outside of the frame of a steel structure or a wooden structure, and the entire outer wall surface of the building is covered with the heat insulating material. For example, in the external heat insulating method described in Patent Document 2, a heat insulating material and a ventilation furring strip are installed on the outside of columns of a steel structure or a wooden structure, and an exterior material such as an ALC panel is placed on the outside of the ventilation furring strip. It will be constructed. Further, according to the external heat insulating method described in Patent Document 3, a support member and a heat insulating material are installed on the outside of columns of a wooden structure or a steel frame structure, and a fixture for supporting the exterior material is fixed to the support member. A lightweight exterior material such as a ceramic or metal siding is supported by the support member via a fixture. On the other hand, the filling insulation method is an insulation method in which a heat insulating material is filled in a hollow area (or a space between adjacent studs (or between studs and end columns)) in a steel frame structure or a wooden structure.

Japanese Unexamined Patent Publication No. 2009-41266 Japanese Unexamined Patent Publication No. 2004-244968 Japanese Unexamined Patent Publication No. 2018-3300

The seismic performance of concrete buildings using the framework construction method or rigid frame construction method basically depends on the seismic strength of the framework, but concrete buildings have extremely heavy weights, and the seismic load acting on the buildings is wooden. Extremely large compared to buildings and steel structures. For this reason, in the structural design of a concrete building, a design in which a bearing wall (seismic wall) having an appropriate amount of wall that bears at least a partial seismic force is arranged at an appropriate position in the building is generally adopted. On the other hand, in the structural planning of buildings with bearing walls, the eccentricity of the building related to the arrangement of the bearing walls must be limited, so in many buildings, the rigidity of the non-bearing walls of the concrete structure is used. In order to prevent the amount of eccentricity of the building from increasing, it becomes necessary to form a structural slit in the non-bearing wall.

On the other hand, when the concrete structure skeleton is partially redesigned to a steel structure skeleton, the weight of the building is relatively greatly reduced, and the seismic load is reduced accordingly, which is extremely structurally advantageous. is there. For example, when the outer wall of a concrete building is redesigned to an outer wall of a steel structure, the seismic load acting on the columns and beams of the concrete structure is relatively greatly reduced, so the frame of the ramen structure does not depend on the bearing wall. It is considered possible to adopt a structural design that depends only on the seismic strength, or to reduce the cross section of columns and beams and reduce the number of reinforcing bars. Moreover, since the outer wall of the steel structure is a structure of the dry construction method, it is practically advantageous in shortening the construction period and improving the workability as compared with the outer wall of the concrete structure constructed by cast-in-place concrete.

In addition, regarding concrete buildings, even if the entire outer wall of the concrete structure is not necessarily designed as the outer wall of the steel structure, and the outer wall of the concrete structure that should be designed as the non-bearing wall is simply redesigned to the outer wall of the steel structure, The weight of the building can be considerably reduced, and no additional construction or work process is required to form the structural slits in the non-bearing wall of the concrete structure. Such weight reduction of buildings and omission of construction of structural slits are extremely beneficial in practice in order to reduce construction costs and shorten construction periods.

However, the external heat insulation method is a heat insulation method closely related to the heat storage action of the concrete structure skeleton and its influence, and is considered to be premised on the existence of a heat insulating material in close contact with the concrete structure skeleton. On the other hand, the outer wall of the steel structure is a building element that should adopt a different type of heat insulation method, that is, an external heat insulation method, which is not directly related to the heat storage action of the skeleton and has completely different building details. Under these circumstances, there is no known building structure having a structure in which an outer wall of a steel structure is used in combination or a composite in a concrete building adopting the external heat insulation method.

In addition, the influence of wind pressure or seismic force acting on the outer wall surface of the middle and upper floors (deformation or behavior of the outer wall, etc.), deterioration of fire resistance and sound insulation of the wall body, heat insulating material and exterior material in the external heat insulating method and the external heat insulating method. Considering the differences in the support structure and construction method, it is difficult to imagine in practice that the outer wall of the steel structure is used together or combined in the concrete building of the external insulation method.

The present invention has been made in view of such circumstances, and an object of the present invention is to make a concrete building of a frame construction method or a ramen construction method, which is insulated by an external heat insulation method, lightweight without impairing its heat insulation performance. As a result, the influence of wind pressure or seismic force acting on the outer wall surface of the middle and upper floors, deterioration of fire resistance and sound insulation of the wall body, differences in the support structure and construction method of heat insulating materials and exterior materials in different types of heat insulating methods, etc. It is an object of the present invention to provide an outer wall structure, a heat insulating structure, and a heat insulating method of a building that can overcome the various problems.

In order to achieve the above object, the present invention is provided in a concrete building (A) having a framework structure composed of columns (C) and beams (B) of the concrete structure, and is provided on an outer edge portion or an outer peripheral portion of the building. In the outer wall structure of a building in which a heat insulating layer is arranged on the outdoor side of columns and beams
The outer wall structure of the building includes a structural skeleton region (β) composed of the columns and beams and an opening region (α) surrounded by the columns and beams.
In the opening region, a steel structure wall portion (Wa) provided with steel structure studs (4) and an interior wall portion (interior wall portion) of a steel wall base arranged at intervals from the steel structure wall portion to the indoor side ( Wb) is provided as the outer wall (W) of the double wall structure.
The steel structure wall portion has an exterior base surface material (6) arranged on the outdoor side of the stud and fixed to the stud so as to close the opening region, and the exterior base surface material, the pillar, and the steel structure wall portion. The outdoor side surfaces of the beam form a substantially single or common exterior substrate surface (1,10) that extends continuously into the structural skeleton area and the opening area.
The heat insulating material (21) covering the exterior base surface is attached or laid on the exterior base surface, and the exterior material (22) is installed on the outdoor side of the heat insulating material, and is continuous over the structural skeleton region and the opening region. Provided is an exterior wall structure of a building, characterized in that a substantially uniform or even exterior heat insulating layer (G) is formed on the outdoor side of the column, beam and steel structure wall portion.

According to the above configuration of the present invention, in the structural skeleton area (β) where columns and beams are arranged, the building is externally insulated according to the external insulation method of the concrete structure, and the opening area surrounded by the columns and beams. In (α), the external insulation is performed according to the external insulation method of the steel structure, and therefore the building is totally insulated by the combined method of the external insulation method and the external insulation method or the hybrid method.

The outer wall of the steel structure has only about 1/5 to 1/10 of its own weight as compared with the outer wall of the concrete structure. Therefore, the own weight of the building having the outer wall structure is relatively greatly reduced. As described above, the seismic load acting on the building is reduced in proportion to the reduction of the building's own weight, so that the outer wall structure is extremely advantageous in improving the seismic resistance of the building.

In addition, since the outer wall of the steel structure is a structure of the dry construction method, it is practically advantageous in shortening the construction period and improving the workability as compared with the outer wall of the concrete structure constructed by cast-in-place concrete.

Further, the outer wall structure is a double wall structure in which the steel structure wall portion and the interior wall portion are separated, and the separation between the steel structure wall portion and the interior wall portion is a heat transfer between the external environment and the interior space. It functions to block or insulate heat conduction or heat transfer in the path, and allows relative displacement of the steel structure wall part and the interior wall part, and the interior wall part is deformed due to the deformation or behavior of the steel structure wall part. Or prevent the phenomenon of behavior. The separation of the steel structural wall portion and the interior wall portion also functions to block or insulate the propagation or propagation of solid propagating vibrations and solid propagating sound. According to the outer wall structure of such a double wall structure, it is possible to prevent an increase in air conditioning load due to thermal cross-linking, a dew condensation phenomenon, etc., and it is relatively easy to achieve a desired fire resistance performance (1 hour fire resistance) as a non-bearing wall. In addition, deformation or behavior of the steel structure wall part due to excessive wind pressure or seismic force, and solid propagating sound and vibration propagated or propagated to the steel structure wall part are caused by the steel structure wall part and the interior. Since it is substantially insulated by the separation of the wall portions, the comfort of the living environment and the like can be ensured as desired.

In addition, the exterior base surface material of the steel structure wall portion extends substantially continuously over a plurality of column spans (areas between the axes of adjacent columns) and a plurality of floors (hierarchies). Is formed on the outer edge portion or the outer peripheral portion of the building, so that a uniform or uniform exterior base surface on which the heat insulating material and the exterior material should be applied is formed on the outer surface of the building. Therefore, in the structural skeleton area, the heat insulating material and the exterior material may be constructed according to the support structure and construction method of the conventional external heat insulating method, and in the opening area, according to the support structure and construction method of the conventional external heat insulating method. The heat insulating material and the exterior material may be applied, whereby a continuous and substantially uniform exterior heat insulating layer can be formed over the entire outer wall surface of the building. In addition, in this specification, the term "exterior insulation" shall be used as a generic term for "external insulation" and "exterior insulation".

From another point of view, the present invention covers the structural frame of a concrete building (A) having a framework structure composed of columns (C) and beams (B) of the concrete structure with a heat insulating layer on the outdoor side thereof. In the heat insulating structure of a building in which a heat insulating layer extending substantially continuously over the pillar span (γ) and / or a plurality of floors is formed on the outdoor side of the structural frame.
The first heat insulating material (21) and the first exterior material (22) constructed by the external heat insulating method on the outdoor side surface of the structural frame area (β) composed of the columns and beams located at the outer edge or the outer peripheral portion of the building. )When,
The second heat insulating material (21) and the second exterior material (22) constructed by the external heat insulating method on the outer wall (W) of the double wall structure constructed in the opening area (α) surrounded by the columns and beams. And have
The outer wall of the double wall structure is arranged in the opening region, and has a steel structure wall portion (Wa) provided with a steel structure stud (4) and the opening separated from the steel structure wall portion on the indoor side. Placed in the area, with an interior wall portion (Wb) with a steel wall base (12-15),
The steel structural wall portion has an exterior base surface material (6) fixed to the stud so as to close the opening area on the outdoor side of the stud, and the outdoor side surface of the exterior base surface material and the structural skeleton. The outdoor side surface of the area forms a single or common exterior base surface (1, 10) that extends substantially continuously in the structural skeleton area and the opening area.
The first and second heat insulating materials (21) are attached to or laid on the exterior base surface so as to cover the exterior base surface and are continuous with each other, and the first and second exterior materials (22) are connected to each other. The heat insulating material and the exterior material are substantially continuously arranged on the outdoor side of the first and second heat insulating materials, and the heat insulating material and the exterior material are substantially uniform or uniform exterior heat insulating materials continuous over the structural frame region and the opening region. Provided is a heat insulating structure of a building characterized in that a layer (G) is formed on the outdoor side of the columns, beams and outer walls.

From yet another point of view, the present invention is a building in which the structural frame of a concrete building (A) having a framework structure composed of columns (C) and beams (B) of a concrete structure is covered with a heat insulating layer on the outdoor side thereof. In the method of heat insulation of things
A steel structure wall portion (Wa) having a steel structure stud (4) and an interior wall portion (Wb) of a steel wall base (12-15) arranged at intervals from the steel structure wall portion to the indoor side. The outer wall (W) of the double-walled structure formed from and is constructed in the opening area (α) surrounded by the columns and beams located at the outer edge or the outer periphery of the building.
The steel structure wall portion has an exterior base surface material (6) fixed to the stud so as to close the opening area on the outdoor side of the stud, and has an outdoor side surface (1) of the exterior base surface material. The outdoor side surface (10) of the structural skeleton region (β) composed of the columns and beams is a single or common exterior base surface (1, 10) extending substantially continuously. Formed in the area and opening area,
The first heat insulating material and the first exterior material (21, 22) are applied to the exterior base surface of the structural skeleton region by the external heat insulating method, and the second heat insulating material and the second exterior material (21, 22) are It is installed on the exterior base surface of the steel structure wall part by the external insulation method.
The first and second heat insulating materials (21) are attached to or laid on the exterior base surface so as to cover the exterior base surface and are continuous with each other, and the first and second exterior materials (22) are connected to each other. The exterior heat insulating layer (G), which is substantially continuously arranged on the outdoor side of the first and second heat insulating materials and is continuous over the structural skeleton region and the opening region, is substantially uniform or uniform. Provided is a method of heat insulating a building, which is characterized in that it is formed on the outdoor side of a structural frame and an outer wall.

Preferably, the outdoor side surface (1) of the exterior substrate surface material (6) is located within the plane of the vertical plane (V) identified by the outdoor side surface (10) of the column (C) or beam (B). Alternatively, it is located at a position slightly recessed indoors from this vertical plane. In this specification, the description of "in-plane" of "leading surface specified by the outdoor side surface of columns and beams" is described on the premise that a construction error of about 10 mm is allowed, and "leading surface" is described. The description of "the position slightly retracted from the inside to the indoor side" is a dimension less than the thickness of the heat insulating material (preferably 3/4 or less of the thickness of the heat insulating material, and more preferably 1/2 of the thickness of the heat insulating material. (Dimensions below) means "from the vertical plane" and "retracted position". More preferably, a bracket (25) fixed to a column, beam or steel structural wall portion (Wa) and penetrating the heat insulating material (21), and a body fixed to the bracket and to which the exterior material (22) can be attached. An exterior material support mechanism including an edge (26, 26', 26 ") is provided. The exterior surface material is attached to the furring strip as an exterior material on the outdoor side of the heat insulating material. The exterior surface material is a structural skeleton area. A vertical outer wall surface of a building extending over (β) and an opening region (α) is formed. As an exterior surface material, a ready-made building exterior panel, board or a building having a surface area of at least 1 m ² is formed. Plates, such as ceramic or metal siding materials, can be preferably used. According to a preferred embodiment of the present invention, the exterior material is a difference in behavior, displacement or deformation between columns and beams and steel structural wall portions. Vertical joints (40) and / or horizontal joints formed by filling the joint space extending along the boundary between the opening area and the structural skeleton area with a sealing material for exterior as a working joint. (41) is formed. In addition, "working joint" generally means a joint in which a joint movement (movement of the joint) caused by an external factor such as an earthquake or a weather occurs relatively large.

In a preferred embodiment of the present invention, the opening region (α) is formed in the column span (γ) on the entire outer circumference of the building, and the steel structure wall portion (Wa) and the interior wall portion (Wb) are formed in all the opening regions. ) Is placed. In another preferred embodiment of the present invention, an opening region is formed in the column span on the entire outer circumference of the building except for the column span in which the bearing wall (KW) of the concrete structure is installed, and the steel structure wall portion is formed in all the opening regions. And the interior wall part is arranged. Preferably, the component of the steel structural wall portion and the component of the interior wall portion are separated from each other, and a buffer band (S) that insulates solid propagating sound, vibration and heat transfer is provided between the steel structural wall portion and the interior wall. It is formed between the parts. If desired, an inorganic fiber-based insulation (eg, artificial mineral fiber insulation such as glass wool or rock wool) (8,18), similar to the insulation (21) above, may be used in the steel structural wall and / or interior wall. The hollow area inside the frame is filled.

According to a more preferred embodiment of the present invention, the boundary surface on the outdoor side of the heat insulating material (21) is substantially parallel to the exterior base surface by the indoor side surfaces (26a, 26a') of the plurality of furring strips. Defined or specified as a vertical plane (Va). The exterior heat insulating layer (G) is interposed between an air layer or a ventilation layer (23) formed between the heat insulating material (21) and the exterior material (22), and between the heat insulating material and the exterior base surface. It includes an inserted moisture permeable waterproof sheet or a moisture permeable waterproof sheet arranged on the outdoor side surface of the heat insulating material. The air layer or ventilation layer and the moisture permeable waterproof sheet extend over the entire area of the exterior heat insulating layer. Preferably, the heat insulating material is an inorganic fiber-based heat insulating material, and the joint formed between the exterior base surface material (6) and the column (C) and / or the beam (B) has an inorganic sealing material. The wall body (W) of each opening region (α), which is a fire-resistant joint and is composed of a steel structure wall portion (Wa) and an interior wall portion (Wb), has a fire resistance performance of 1 hour fire resistance.

From another point of view, the present invention further provides a concrete building having an outer wall structure or a heat insulating structure having the above structure, and also provides a construction method for the concrete building including the heat insulating method having the above structure.

According to the present invention, a concrete building of a frame construction method or a rigid frame construction method that is insulated by the external insulation method is reduced in weight without impairing its insulation performance, and is affected by wind pressure or seismic force acting on the outer wall surface of the middle and upper floors. , The outer wall structure of the building, the heat insulating structure and the heat insulating method that can overcome various problems such as deterioration of fire resistance and sound insulation of the wall body, difference in support structure and construction method of heat insulating material and exterior material in different kinds of heat insulating construction methods. Can be provided.

FIG. 1 is a partial plan view of a concrete building having an outer wall structure according to a preferred embodiment of the present invention. FIG. 2 is a partial vertical sectional view of the concrete building shown in FIG. FIG. 3 is a cross-sectional view of the outer wall showing the structure of the outer wall shown in FIGS. 1 and 2. FIG. 4 is a vertical cross-sectional view of the outer wall showing the structure of the outer wall shown in FIGS. 1 and 2. FIG. 5 is a partially cutaway perspective view of the outer wall schematically showing the structure of the outer wall shown in FIGS. 1 and 2. FIG. 6 is a partial plan view of a concrete building having an outer wall structure according to another embodiment of the present invention. FIG. 7 is a partial vertical sectional view of the concrete building shown in FIG. FIG. 8 is a cross-sectional view of the outer wall showing the outer wall structure according to still another embodiment of the present invention. FIG. 9 is a partially enlarged cross-sectional view of the outer wall shown in FIG. FIG. 10 is a cross-sectional view of an outer wall showing an application example of the embodiment shown in FIGS. 8 and 9.

Hereinafter, the outer wall structure according to the preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

1 and 2 are a partial plan view and a partial vertical sectional view of a concrete building having an outer wall structure according to a preferred embodiment of the present invention.

Building A shown in FIGS. 1 and 2 has a frame structure (rigid frame structure) and a middle-high layer designed with columns C and beams B of an RC structure or SRC structure constructed by cast-in-place concrete as the main parts in terms of structural strength. It is a concrete building of. The floor structure F on each floor of building A and the rooftop floor is a floor slab constructed by cast-in-place concrete, and the foundation of building A (not shown) is a direct foundation or pile constructed by cast-in-place concrete. It is the basis. As a modification, the building A has a frame structure (ramen structure) and a middle-high layer designed with columns C and beams B of a PCa (precast concrete) structure as the main parts in terms of structural strength, partially or entirely. It may be a concrete building of.

Conventionally, when the outer wall surface is insulated from the outdoor side in this type of concrete building, the external insulation method has been generally adopted, so that the outer wall is a bearing wall (seismic wall) or a non-bearing wall (non-seismic wall) of a concrete structure. ) Has been designed. However, in the building A of this example, the outer wall W is a dry double wall structure composed of a steel structure wall portion Wa and an interior wall portion Wb of a steel wall base (JASS (Japanese Architectural Standard Specification) 26). Designed as a non-bearing wall.

The steel structure wall portion Wa is a wall body of a steel structure built in a rectangular opening region α surrounded by columns C and beams B, and is channel steel or C-shaped steel (JIS G 3350, lightweight shaped steel for general structure). Or, it has a frame consisting of a lower runner 2, an upper runner 3, a stud 4, and an end column 5 of a square steel pipe (JIS G3466, square steel pipe for general structure), and an exterior base surface material 6 is placed on the outdoor side surface of this frame. Has a constructed structure. The lower runner 2 constitutes or functions as a base, the upper runner 3 constitutes an upper horizontal furring strip or functions as an upper horizontal furring strip, and the

studs

4 and 5 end columns 5 form a vertical (vertical) furring strip. Or functions as a vertical (vertical) furring strip.

The interior wall portion Wb is arranged in parallel on the indoor side of the steel structure wall portion Wa with a buffer band S having a width T0 in between, and is a partition wall (a partition of a steel wall base (JASS26)) built in a rectangular opening region α. The wall). The frame of the interior wall portion Wb is composed of a lower runner 12, an upper runner 13, a steel stud 14, and an end pillar 15. The width T0 of the buffer zone S is the distance between the steel structure wall portion Wa and the interior wall portion Wb that are closest to each other (in this example, the distance between the runners), and is at least 0.5 mm, preferably 1 to 15 mm. The size is set to (for example, 5 mm).

The face material 6 of the steel structure wall portion Wa is fixed to the outdoor side surface of the

runners

2, 3, studs 4 and end columns 5 by a fixture such as a screw nail, and the heat insulating material 21 can be attached or laid on the exterior base surface 1. To form. The outdoor side surfaces of the pillar C and the beam B also form an exterior base surface 10 to which the heat insulating material 21 can be attached or laid. In this example, the exterior base surfaces 1 and 10 are separated by the fourth round joint 9, but the surface to be constructed on which the heat insulating material 21 should be applied is a plurality of column spans γ (regions between the axes of adjacent columns). And constitutes a single and common underground that is substantially continuous and flat across multiple floors (hierarchies). If desired, a local step may be formed on the exterior base surfaces 1, 10 or the boundary portion thereof, and the face materials 6 and the face materials 6 and the pillar C or the beam B may be formed of a metal or resin joiner. It may be joined by such as.

The heat insulating material 21 is continuously attached to the steel structure wall portion Wa, the column C, and the beam B so as to cover the surface to be constructed (exterior base surfaces 1, 10) continuous over the entire outer wall surface without gaps. The exterior material 22 is laid and is further installed on the outdoor side of the heat insulating material 21 so as to be substantially continuous over the entire outer wall surface of the building A. The exterior material 22 is integrally attached to the steel structure wall portion Wa, the column C, and the beam B by a support mechanism or the like described later. An air layer 23 is formed between the exterior material 22 and the heat insulating material 21.

The heat insulating material 21, the exterior material 22, and the air layer 23 are continuous over a plurality of column spans γ and a plurality of floors, and thus an exterior heat insulating layer G that continuously extends over the entire outer wall surface of the building A is formed. .. The thickness (width) T3 (FIGS. 3 and 4) of the exterior heat insulating layer G is the same as the thickness of the heat insulating layer of the conventional external heat insulating method, and has dimensions within the range of 50 to 200 mm, preferably 75 to 150 mm (book). In the example, it is set to about 100 mm). In the region where the columns C and the beams B are arranged (that is, the structural skeleton region β), the exterior heat insulating layer G constitutes an external heat insulating layer that covers the skeleton of the concrete structure having a heat storage effect with a heat insulating material, while the structure. In the region surrounded by the skeleton region β (that is, the rectangular opening region α), the heat insulating material 21 is applied to the outer surface of the steel structure wall portion Wa, and the steel structure wall portion Wa is covered with the heat insulating material 21. To configure. Thus, the building A includes an exterior heat insulating layer G that insulates the entire outer wall surface of the building A by a combined construction method or a hybrid construction method of the external heat insulating method and the external heat insulating method.

The exterior material 22 is separated by the joint width at the boundary between the rectangular opening region α and the structural skeleton region β, and the joint space is filled with an exterior sealing material (silicon-based, acrylic urethane-based, polysulfide-based sealing material, etc.). The vertical joint 40 and the horizontal joint 41 are formed at the boundary between the rectangular opening region α and the structural skeleton region β. The

joints

40 and 41 function as working joints that compensate for or absorb differences in behavior, displacement, or deformation between the structural frame (column C and beam B) and the steel structure wall portion Wa that may occur during an earthquake, strong wind, or the like. ..

The building A configured in this way is a concrete building provided with an exterior heat insulating layer G that insulates the entire outer wall surface from the outdoor side by a combined construction method of the external heat insulating method and the external heat insulating method, and is peculiar to the concrete building. Although it has the same heat insulating performance as the external heat insulating method, which is the heat insulating method of the above, it does not have a concrete structure wall. The outer wall W of the building A composed of the steel structure wall portion Wa and the interior wall portion Wb has a weight of only about 1/5 to 1/10 of the weight of the outer wall of the concrete structure. The weight of the object A is greatly reduced. The seismic load (short-term horizontal load) acting on the structural frame of the columns C and beams B of the building A is relatively greatly reduced with the reduction of its own weight, and the structural load of the foundation etc. is also relatively greatly reduced. Therefore, the combined construction method of the external insulation method and the external insulation method is extremely useful in terms of the structural plan of the building A. Moreover, the adoption of the outer wall of the steel structure makes it possible to shorten the construction period, reduce the construction cost, etc., and is therefore beneficial from the viewpoint of the construction plan of the building A.

Further, since the internal space of the steel structure wall portion Wa and the interior wall portion Wb can be used as a wiring / piping space for building equipment, the workability of building equipment construction is improved. Nevertheless, the wall thickness of the outer wall W (wall thickness [T0 + T1 + T2] shown in FIGS. 3 and 4) is 150 to 250 mm, and the wall thickness can be designed to be the same as that of a normal concrete wall. The interior space does not significantly reduce the effectively available architectural space, and disadvantages in architectural design design are unlikely to occur. In addition, the outer wall W of the double wall structure composed of the steel structure wall portion Wa and the interior wall portion Wb can relatively easily secure the desired fire resistance performance (fire resistance for 1 hour).

Further, a relatively large wind load acts on the outer wall surface of the middle and upper floors of the building A, and the out-of-plane rigidity of the steel structure wall portion Wa of the steel structure is designed relatively easily to withstand this wind load. can do. Further, deformation, behavior or vibration of the steel structure wall portion Wa due to the wind load, solid propagation of external noise, etc. are absorbed or insulated by the buffer zone S, and therefore do not affect the interior wall portion Wb. Therefore, The comfort or comfort of the indoor environment is not impaired, and heat transfer due to changes in external weather, solar radiation, etc. is also reliably insulated by the buffer zone S, so that the metal frame 2-5 , 12-15 is unlikely to cause any disadvantages in air conditioning design.

In addition, the exterior base surfaces 1 and 10 constituting a substantially continuous vertical and flat single and common surface to be constructed, and the exterior material support mechanism described later are substantially the same or substantially the same over the entire outer wall surface. The same support structure makes it possible to construct the heat insulating material 21 and the exterior material 22.

3 and 4 are a cross-sectional view and a vertical cross-sectional view of the outer wall W showing the structure of the outer wall W, and FIG. 5 is a partially cutaway perspective view of the outer wall W which schematically shows the structure of the outer wall W.

The frame of the steel structure wall portion Wa is vertically built between the lower runner 2 fixed on the floor structure F, the upper runner 3 fixed on the lower surface of the beam B, and the upper and

lower runners

2 and 3. It is composed of a stud 4 and an end column 5. The studs 4 are arranged at equal intervals about the central axes XX of the

runners

2 and 3 in a plan view (FIG. 3), and the end pillars 5 are erected close to the pillar C. As described above, the

runners

2, 3, studs 4 and end columns 5 are channel steels, C-shaped steels (JIS G 3350, lightweight shaped steel for general structures), or square steel pipes (JIS G 3466, square steel pipes for general structures). ) Consists of. In this example, the

runners

2, 3 and the studs 4 and the end columns 5 are made of C-shaped steel of C-100 × 50 × 20 × 1.6 (mm), and the distance between the studs 4 is set to about 300 to about 600 mm. ..

As shown in FIGS. 3 and 4, the heat insulating / sound absorbing material 8 (shown by the broken line) is filled in the hollow area in the frame of the steel structure wall portion Wa. In this example, the heat insulating / sound absorbing material 8 is made of glass wool having a density of 10 to 48 kg / m ³ and a thickness of 10 to 100 mm (for example, a density of 24 kg / m ³ and a thickness of 75 mm). In addition, in FIG. 1, FIG. 2 and FIG. 5, the illustration of the heat insulating / sound absorbing material 8 is omitted in order to facilitate the understanding of the drawings.

As described above, the exterior base surface material 6 is arranged on the outdoor side surface of the stud 4 and the end pillar 5, and is fixed to the stud 4 and the end pillar 5 in a striking form by a fixing tool such as a screw nail. Various gypsum boards can be preferably used as the face material 6. In this example, the face material 6 is a reinforced gypsum board having a thickness of 15 mm (Yoshino Gypsum Co., Ltd. product "Tiger board (registered trademark) type Z-WR"). The lower end, upper end, and side end of the face material 6 are terminated in the vicinity of the beam B (or floor structure F) and the pillar C, and as described above, the fourth peripheral joint 9 is formed on the outer peripheral portion of the face material 6. To. In the fourth joint 9, the underlay seal material 9a and the upper seal material 9b are used as a filler for the fourth joint, and the joint portions (grooves at the joints with the pillar C and the beam B) at the upper end, lower end and side ends of the face material 6 are used. It has a joint structure that is continuously filled or inserted into a space. In the present embodiment, an inorganic sealing material, for example, rock wool felt (for example, trade name "Tiger Rock Felt (registered trademark)" (product of Yoshino Gypsum Co., Ltd.)) is used as the underlay sealing material 9a, and the overlay sealing material is used. As 9b, for example, a urethane resin-based sealing material (for example, trade name "Tiger U Tight" (product of Yoshino Gypsum Co., Ltd.)) is used.

The widths of the

runners

2 and 3 are the same as the widths of the

studs

4 and 5, and the central axes YY (FIG. 4) of the

studs

4 and 5 and the central axes XX of the runners 2 and 3 ( FIG. 3) is located within the same vertical plane. The lower and upper ends of the studs 4 and the end columns 5 are fixed to the

runners

2 and 3 by welding. In this example in which C-shaped steel of C-100 × 50 × 20 × 1.6 (mm) is used as

runners

2, 3, studs 4, and end columns 5, the steel structural wall portion Wa including the face material 6 is used in the architectural design. The wall thickness T1 is T1 = 115 mm.

The outdoor side surface of the face material 6 (that is, the exterior base surface 1) is a vertical skeleton structure surface V (FIGS. 2 to 4) specified by the outdoor side surfaces (that is, the exterior base surface 10) of the beam B and the column C. Located in the plane of. If desired, the exterior base surface 1 may be arranged at a position slightly recessed toward the indoor side from the vertical skeleton structure surface V. The heat insulating material 21 constituting the exterior heat insulating layer G is arranged on the outdoor side surface of the beam B, the pillar C, and the face material 6, and is in contact with or in close contact with the exterior base surfaces 1 and 10 by a mooring tool (not shown). It is fastened to the beam B, the column C, and the steel structure wall portion Wa.

For example, the heat insulating material 21 is fastened to the stud 4 or the end pillar 5 by a screw with a washer penetrating the face material 6. If desired, a moisture-permeable waterproof sheet (not shown) is adhered to the exterior base surfaces 1 and 10 and inserted between the heat insulating material 21 and the exterior base surfaces 1 and 10. As a modification, a breathable waterproof sheet may be applied to the outdoor side surface of the heat insulating material 21. If desired, the heat insulating material 21 can be adhered to the exterior base surfaces 1 and 10.

In this example, the heat insulating material 21 is made of a glass wool plate having a density of 16 to 48 kg / m ³ and a thickness of 20 to 50 mm (for example, a density of 24 kg / m ³ and a thickness of 25 mm), or a plate-shaped or board-shaped glass wool. .. The exterior material 22 is attached to the outdoor side of the face material 6 and is attached to the outdoor side of the beam B and the pillar C by the support mechanism components 24 to 29 (FIG. 3) described below. As the exterior material 22, a ceramic or metal siding material having a height of 300 to 600 mm (for example, a height of 450 mm), a width of 1200 to 2000 mm (for example, 1500 mm), and a thickness of 15 to 25 mm (for example, a thickness of 18 mm) is suitable. Can be used for. An air layer 23 is formed between the heat insulating material 21 and the exterior material 22.

As shown in the partially enlarged view of FIG. 3, the exterior material 22 includes a stud 4, an end column 5, and a structural skeleton (column C and beam B) by means of a bracket 25, a vertical furring strip 26, and a fastening metal fitting 27 constituting the support mechanism. Supported by. The bracket 25 is fixed to the stud 4 or the end column 5 by a fixture 24 (screws, screws, bolts, etc.) penetrating the face material 6, or is a structural frame (column C and) by an RC anchor 29 such as a hole-in anchor. It is fixed to the beam B). The bracket 25 penetrates the heat insulating material 21, and the vertical furring strip 26 is fixed to the bracket 25 by a fixture 28 (screws, screws, bolts, etc.). The bracket 25 is made of a plurality of metal L-shaped members arranged at intervals in the vertical direction, and the vertical furring strip 26 is made of a long metal member having an L-shaped cross section that extends continuously in the vertical direction. The support mechanism having the bracket 25 and the vertical furring strip 26 constitutes an exterior base material for exterior material construction that is uniformly or evenly dispersed over the entire outer wall across the rectangular opening region α and the structural skeleton region β. The inner side surface 26a of the vertical furring strip 26 facing the heat insulating material 21 abuts on the outdoor side surface of the heat insulating material 21 to restrain the heat insulating material 21 from the outdoor side, and defines or defines the boundary of the heat insulating material 21 on the outdoor side. ..

The fastener 27 is made of a metal member having an exterior material holding mechanism, and is attached to the vertical furring strip 26 at intervals in the vertical direction. The exterior material 22 is fixed to the vertical furring strip 26 by the fastener 27, and is integrally supported by the stud 4, the end column 5, or the structural skeleton (column C and beam B) via the bracket 25. For example, when a ceramic siding material is adopted as the exterior material 22, a fastener dedicated to the siding material manufactured for constructing the ceramic siding material is adopted as the fastener 27. The vertical joint 40 shown in FIG. 3 has a joint structure in which the backup material 40a and the sealing material 40b are loaded or filled in the joint space between the exterior materials 22. The horizontal joints 41 shown in FIGS. 2 and 4 also have substantially the same joint structure. The

joints

40 and 41 function to compensate for or absorb differences in the behavior, displacement, or deformation of the exterior material 22 that may occur at the boundary between the rectangular opening region α and the structural skeleton region β during an earthquake, strong wind, or the like.

On the other hand, the framework of the interior wall portion Wb arranged on the indoor side of the steel structure wall portion Wa is the lower runner 12 arranged on the beam B (or the floor structure F) and the upper portion fixed to the lower surface of the beam B. It is composed of a runner 13 and a steel stud 14 and an end column 15 vertically built between the upper and

lower runners

12 and 13. The studs 14 are arranged at equal intervals about the central axes of the

runners

2 and 3, and the end pillars 15 are arranged close to the pillars C. The

runners

12, 13 and studs 14 are steel members having a plate thickness of 0.4 mm or more, and are steel runners and steel studs specified in JIS A6517 (“building steel base material”), or their studs. Equivalent, compliant or compatible products may be suitably used as

runners

12, 13 and studs 14. That is, the

runners

12, 13 and the stud 14 constitute a steel wall base specified in JIS A6517 or a wall base equivalent thereto. In this example, the end column 15 is also made of a steel stud specified in JIS A6517 (“building steel base material”), or an equivalent product, a compliant product, or a compatible product thereof, like the stud 14. ..

In this example, the stud 14 and the end column 15 are made of a steel wall base material having a groove-shaped cross section of 50 × 45 × 0.8 (mm), and the distance between the studs 14 is set to about 450 mm. The width of the

runners

12 and 13 is slightly larger than the width of the stud 14 and the end pillar 15, and the upper end and the lower end of the stud 14 and the end pillar 15 are inserted into the grooves of the

runners

12 and 13, but the runner In practice, the widths of 12 and 13 can be regarded as substantially the same as the widths of the stud 14 and the end pillar 15. Since the widths of the

runners

12 and 13 are almost the same as the widths of the stud 14 and the end column 15, a book using a steel wall base material having a grooved cross section of 50 × 45 × 0.8 (mm) as the stud 14. In the example, the architectural design wall thickness T2 of the steel structural wall portion Wb including the

face members

16 and 17 is T2 = 72 mm or 75 mm. As a modification, steel studs having a square cross section of 50 × 45 × 0.45 (mm) or 40 × 40 × 0.45 (mm) may be used as the stud 14 and the end column 15.

As shown in FIGS. 3 and 4, the heat insulating / sound absorbing material 18 is filled in the hollow area inside the frame of the interior wall portion Wb. The heat insulating / sound absorbing material 18 is made of glass wool having a density of 10 to 48 kg / m ³ and a thickness of 30 to 50 mm (for example, a density of 24 kg / m ³ and a thickness of 40 mm). In addition, in FIG. 1, FIG. 2 and FIG. 5, the illustration of the heat insulating / sound absorbing material 18 is omitted in order to facilitate the understanding of the drawings.

The underlaying surface material 16 is fixed to the indoor side surface of the stud 14 and the end column 15 by screw screws (tapping screws, not shown), and the upholstery surface material 17 is fixed to the indoor side surface of the underlaying surface material 16 by staples and adhesives. To. Various gypsum boards having a thickness of 9 to 25 mm (for example, reinforced gypsum board (Yoshino Gypsum Co., Ltd. product "Tiger board (registered trademark), type Z")) are preferably used as the underlaying surface material 16 and the upholstery surface material 17. obtain. In this example, a reinforced gypsum board having a thickness of 12.5 mm is used as the face material 16, an ordinary hard gypsum board having a thickness of 9.5 mm is used as the face material 17, or the

face materials

16 and 17 are thick. 12.5 mm reinforced gypsum board is used.

As the adhesive, a vinyl acetate resin adhesive generally used as an adhesive for gypsum board construction can be preferably used. If desired, the upholstery surface material 17 can be fixed to the underlaying surface material 16 by using staples, an adhesive and screw screws in combination, or the upholstery surface material 17 can be fixed to the underlaying surface material 16 only by screw screws. Is.

The lower end, upper end and side end of the

face materials

16 and 17 are terminated in the vicinity of the floor structure F, the beam B and the pillar C, and the fourth joint 19 of the

face materials

16 and 17 is formed. The fourth joint 19 uses the underlay seal material 19a and the upper seal material 19b as a filler for the fourth joint, and is a joint portion (joint portion with the column C and the beam B) at the upper end, the lower end and the side end of the

face materials

16 and 17. It has a joint structure that is continuously filled or inserted into the groove-shaped space. In the present embodiment, an inorganic sealing material, for example, rock wool felt (for example, trade name "Tiger Rockfelt (registered trademark)" (product of Yoshino Gypsum Co., Ltd.)) is used as the underlaying sealing material 19a, and the overlining sealing material is used. As 19b, for example, a urethane resin-based sealing material (for example, trade name "Tiger U Tight" (product of Yoshino Gypsum Co., Ltd.)) is used.

The indoor surface of the upholstery surface material 17, the lower end surface and side surface of the beam B facing the indoor space, the vertical surface of the pillar C, etc. are the interior finishing materials (coating film or cloth) in the interior finishing work such as painting or cloth pasting. Etc.) Covered with 30. Further, the floor finishing material 31 is installed on the upper surface of the floor structure F. If desired, an OA floor, a free access floor, a system floor, etc. may be constructed on the floor structure F, or a system ceiling, a steel ceiling base specified in JIS A6517, etc. may be constructed on the ceiling portion. .. In FIG. 5, the interior finishing material 30 and the floor finishing material 31 are not shown.

The advantages of the outer wall W configured in this way include, for example, the following points.
(1) The weight of the outer wall can be reduced to about 1/5 to 1/10 as compared with the weight of the outer wall of the concrete structure.
(2) The construction of the outer wall W is more advantageous than the construction of the outer wall of the concrete structure in terms of shortening the construction period and reducing the construction cost.
(3) Since the internal space of the steel structure wall portion Wa and the interior wall portion Wb can be used as a wiring / piping space for building equipment, the workability of building equipment construction is improved.
(4) The wall thickness (T0 + T1 + T2) of the outer wall W can be designed to be the same wall thickness as that of a normal concrete wall.
(5) The outer wall W can relatively easily secure the desired fire resistance performance (fire resistance for 1 hour).
(6) The out-of-plane rigidity of the steel structure wall portion Wa can be designed relatively easily so as to withstand the wind load.
(7) Deformation, behavior or vibration of the steel structure wall portion Wa due to the wind load, solid propagation of external noise, etc. are absorbed or insulated by the buffer zone S.
(8) The heat transfer of cold or hot heat caused by changes in the external weather, solar radiation, etc., and the heat load thereof are insulated by the buffer zone S.
(9) Substantially continuous vertical and flat exterior base surfaces 1 and 10 constituting a single and common surface to be constructed, and substantially common support mechanisms 24 to 29 arranged on the covering construction surface. Makes it possible to construct the heat insulating material 21 and the exterior material 22 with substantially the same or equivalent support structure over the entire outer wall surface.

6 and 7 are a partial plan view and a partial vertical sectional view of a concrete building having an outer wall structure according to another embodiment of the present invention.

In the above-described embodiment, the building A is not provided with a bearing wall (seismic wall), and all the outer walls W are made of a steel structure wall portion Wa of a steel structure and an interior wall portion of a steel wall base (JASS26 or equivalent). Since it was designed as a non-bearing wall with a dry double wall structure composed of Wb, the seismic load is relatively significantly reduced due to the remarkable reduction of its own weight, but on the other hand, the total seismic load is applied to the columns C and beams. B's framework must bear. If the structural load of columns C and beams B can be excessive, a concrete bearing wall (seismic wall) KW is installed at the desired outer wall position as shown in Building A'shown in FIGS. 6 and 7. Is also good. In such an outer wall structure, the exterior base surface 10 is continuous not only with the columns C and the beams B but also with the bearing wall KW. The heat insulating material 21 constituting the exterior heat insulating layer G is arranged not only on the outdoor side surface of the beam B, the pillar C and the face material 6, but also on the outdoor side surface of the bearing wall KW.

The heat insulating material 21 is provided with a beam B, a column C, a steel structure wall portion Wa, and a steel structure wall portion Wa by a mooring tool (not shown) in a state of surface contact or close contact with the exterior base surfaces 1 and 10 by the same construction method as in the above-described embodiment. It is fastened to the bearing wall KW. If desired, a moisture-permeable waterproof sheet (not shown) is adhered to the exterior base surfaces 1 and 10 and inserted between the heat insulating material 21 and the exterior base surfaces 1 and 10. As a modification, it is also possible to install a moisture permeable waterproof sheet (not shown) on the outdoor side surface of the heat insulating material 21. If desired, the heat insulating material 21 may be adhered to the exterior base surfaces 1 and 10.

The exterior material 22 is supported by the studs 4 and the end columns 5 by the

fixtures

24 and 28, the bracket 25, the vertical furring strip 26 and the fastener 27, and is an RC anchor, as in the above-described embodiment (FIG. 3). 29, the fixture 28, the bracket 25, the vertical furring strip 26, and the fastener 27 are fixed to the pillar C and the beam B. The exterior material 22 is also fixed to the bearing wall KW by the RC anchor 29, the fixture 28, the bracket 25, the vertical furring strip 26, and the fastener 27, as in the support form of the pillar C and the beam B. Similar to the above-described embodiment, the support mechanisms 24 to 29 constitute an exterior base material for exterior material construction that is uniformly or evenly dispersed over the entire outer wall across the rectangular opening region α and the structural skeleton region β. Further, as in the above-described embodiment, the

joints

40 and 41 are formed at the boundary between the rectangular opening region α and the structural skeleton region β. The

joints

40 and 41 compensate for differences in behavior, displacement, or deformation of the exterior material 22 that may occur during an earthquake, strong wind, or the like.

According to the building A'in which the bearing wall KW of the concrete structure and the outer wall W of the non-bearing wall of the steel structure are used in combination in this way, the effect of weight reduction of the building A'may be slightly reduced. It is possible to reduce the structural load of columns C and beams B, improve the earthquake resistance of building A', and further reduce the construction cost by reducing the number of reinforcing bars.

8 and 9 are a cross-sectional view and a partially enlarged cross-sectional view of the outer wall W showing the outer wall structure according to still another embodiment of the present invention, and FIG. 10 shows an application example of the embodiment shown in FIG. It is a cross-sectional view of the outer wall.

In the embodiment shown in FIGS. 8 and 9, the vertical furring strip 26 made of a long metal material having a square cross section is replaced with the vertical furring strip 26 made of a long metal material having an L-shaped cross section (FIG. 3). Is fixed to the bracket 25 by the fixture 28. For example, as the vertical furring strip 26', a square steel pipe having a size of 40 × 40 × 1.6 (mm) can be preferably adopted. Similar to the above-described embodiment, the bracket 25 and the vertical furring strip 26'consisting of a support mechanism for attaching the exterior material 22 to the outside of the heat insulating material 21, and the support mechanism includes a rectangular opening region α and a structural skeleton region β. An exterior base material for construction of an exterior material that is uniformly or evenly dispersed over the entire outer wall is constructed. The inner side surface 26a'of the vertical furring strip 26' comes into contact with the outdoor side surface of the heat insulating material 21 and restrains the heat insulating material 21 from the outdoor side. The outdoor interface of the insulation 21 is defined or specified by a number of inner surfaces 26a'as a vertical Va (FIG. 9) substantially parallel to the exterior substrate surface 1. Since the outer wall structure of the present embodiment is substantially the same as the above-described embodiment in other configurations, duplicated description will be omitted.

FIG. 10 shows an outer wall structure in which the pillar-shaped contour of the pillar C is exposed on the outer wall surface of the building A as an application example of the outer wall structure shown in FIG. The outer wall structure according to the present invention can also be similarly adopted in an architectural design in which a pillar-shaped contour (and / or a beam-shaped contour) is exposed on an outer wall surface in this way. For example, in a design in which the pillar C projects outward in a plan view relative to the outer wall W as shown in FIG. 10, the heat insulating material 21 is attached along the outer surface of the pillar C, and the RC anchor 29 and the bracket 25 are attached. A construction method is adopted in which the vertical furring strip 26'and the fastener 27 are fixed to the pillar C, and the exterior material 22 is attached to the fastener 27. Further, at the corners of the pillar C, the vertical furring strip 26 ”(for example, C-shaped steel of C-75 × 45 × 15 × 1.6 (mm)) is fixed to the bracket 25, and the exterior material 22 is formed into an L-shaped cross section. 'Is just fixed to the vertical furring strip 26'. Such an outer wall structure can be similarly adopted in an outer wall structure in which the beam shape of the beam B is exposed on the outer wall surface.

FIG. 8 shows a partition wall 50 in which the wall end is abutted against the indoor side surface of the interior wall portion Wb and is orthogonal to the outer wall W. The partition wall 50 is a lightweight partition wall of the single runner / staggered stud construction method. Architectural spaces such as living rooms are formed on both sides of the partition wall 50. The studs 51 that make up the studs are arranged in a staggered arrangement that is alternately eccentric to one side in the wall core direction due to the alternating arrangement of spacers 54, and are arranged vertically between the lower runner 52 and the upper runner (not shown). It will be built. Further, the end column 55 is formed by a pair of steel studs 55a and 55b arranged in a staggered arrangement by a spacer 54. At the end of the partition wall 50, a joint 59 similar to the joint 19 made of the underlay seal material 19a and the upholstery seal material 19b is formed. By constructing both the interior wall portion Wb and the partition wall 50 as lightweight partition walls (partition walls of the steel wall base (JASS26) or equivalent products) in this way, workability can be improved or construction efficiency can be improved. It becomes possible to plan.

Although the preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various modifications or modifications can be made within the scope of the present invention described in the claims. Needless to say.

For example, in the above embodiment, reinforced gypsum board and ordinary hard gypsum board are used as face materials constituting the outer wall W, but hard gypsum board, structural gypsum board, and sheathing gypsum board are used according to design conditions. , Gypsum board products such as decorative gypsum board, gypsum board containing glass fiber non-woven fabric (trade name "Tiger Glass Lock (registered trademark)" (Yoshino Gypsum Co., Ltd. product)), slag gypsum plate (trade name "Asnon" (registered trademark)) Etc.), cement board ("Delacrete" (registered trademark), etc.), fiber-mixed gypsum board (trade name "FG board", etc.), extruded board (trade name "Clion studless panel", "SLP panel", etc.), ALC It is also possible to appropriately use a board, a calcium silicate board, a wood-based plywood, a ceramic-based siding, or the like as a face material of the outer wall W.

Further, in the present invention, the pillar of the concrete building may include a sleeve wall having a protruding dimension equal to or smaller than the cross-sectional dimension of the pillar (the dimension of the pillar in the wall core direction), and the concrete building. The beam may include a hanging wall or a waist wall having a size equal to or smaller than the cross-sectional dimension (beam concrete) of the beam. In the case of a design in which the concrete on the upper part of the beam is reinforced or the edge of the concrete floor slab is formed on the upper side of the beam, the reinforced portion or the edge of the floor slab located directly above the beam is the present invention. In, it shall be a part of the beam.

Further, the outer wall structure of the above embodiment has a structure in which a glass wool-based heat insulating material, which is an inorganic fiber-based heat insulating material, is arranged or filled in the exterior heat insulating layer and the hollow area inside the frame with an emphasis on fire resistance or nonflammability. However, if desired, rock wool-based heat insulating material, which is an inorganic fiber-based heat insulating material different from glass wool-based heat insulating material, and foamed plastic-based heat insulating material such as wood fiber-based heat insulating material, hard urethane foam, phenol foam, and polystyrene foam. Alternatively, it is also possible to use a heat insulating material of another material as the heat insulating material.

Further, in the above-described embodiment, the frame of the steel structure wall portion has a structure in which the upper and lower ends of the studs and the end columns are welded to the upper and lower runners, but the frame of the steel structure wall portion is, for example, as follows. It may have the structure of.
(1) Fix the steel piece (steel piece) of L-shaped steel (angle steel) to the upper end surface and / or lower end surface of the beam with anchor bolts, etc., and attach the lower end and / or upper end of the stud (and end column). Fixed to L-shaped steel by bolts or welding.
(2) Fix the runner to the upper end surface and / or lower end surface of the beam, and fix the lower end and / or upper end of the studs (and end columns) to the runner by welding.
(3) Fix the runner to the upper end surface and / or lower end surface of the beam, weld the steel piece (steel piece) of the L-shaped steel material (angle steel material) to the runner, and weld the lower end of the stud (and end column) and / or The upper end is fixed to the steel piece by bolt and / or welding.
(4) In the structure of (3) above, the lower end and / or upper end of the studs (and end columns) are further welded to the upper or lower surface of the runner.

The present invention is applied to the outer wall structure, heat insulating structure and heat insulating method of a concrete building having columns and beams of a concrete structure. The present invention particularly relates to a concrete building in which heat insulating materials and exterior materials are applied to the outdoor side of columns and beams at the outer edge or outer periphery of the building, and the outer wall is installed in an opening area surrounded by columns and beams. Applies to building structures, their insulation structures or methods of insulation. According to the present invention, it is possible to insulate a concrete building of a frame construction method or a rigid frame construction method by a combined construction method of an external heat insulation method and an external heat insulation method, and to reduce the weight of the concrete building, and moreover, a different construction method. Its practical value is remarkable because it can overcome various problems associated with the combination or combination of the above.

A, A'Building B Beam C Pillar G Exterior insulation layer V Vertical skeleton structure surface Va Vertical surface (outdoor side boundary surface of insulation material)
W outer wall KW bearing wall (seismic wall)
Wa Steel structure wall part Wb Interior wall part S Buffer zone α Rectangular opening area β Structural skeleton area

γ Pillar span

1, 10

Exterior base surface

2, 3, 12, 13

Runner

4, 14

Stud

5, 15 End pillar 6 Exterior

base surface Material

9, 19 Fourth lap
16 Underlaying surface material 17 Overlaying surface material 21 Insulation material 22, 22'Exterior material 23 Air layer 25

Bracket

26, 26', 26 "Vertical furring strip 27 Fastener 30 Interior finishing material 31 Floor finishing material 40 Vertical joint 41 Horizontal joint Ground

Claims

In the outer wall structure of a building, which is provided in a concrete building having a framework structure composed of columns and beams of a concrete structure, and in which a heat insulating layer is arranged on the outdoor side of the columns and beams at the outer edge or the outer periphery of the building.
The outer wall structure of the building includes a structural skeleton area composed of the columns and beams and an opening area surrounded by the columns and beams.
In the opening region, a steel structure wall portion having a steel structure stud and an interior wall portion of a steel wall base arranged at intervals from the steel structure wall portion to the indoor side are formed as a double wall structure. It is provided as an outer wall of
The steel structural wall portion has an exterior base surface material arranged on the outdoor side of the stud and fixed to the stud so as to close the opening region, and the exterior base surface material, the column, and the beam. The outdoor side surface forms a substantially single or common exterior substrate surface that extends continuously to the structural skeleton area and the opening area.
A heat insulating material covering the exterior base surface is attached or laid on the exterior base surface, and the exterior material is applied to the outdoor side of the heat insulating material so as to be continuous substantially uniform over the structural frame region and the opening region. An outer wall structure of a building, characterized in that a uniform exterior heat insulating layer is formed on the outdoor side of the column, beam and steel structure wall portion.
The outdoor side surface of the exterior base surface material is located in the plane of the vertical plane (V) specified by the outdoor side surface of the column or beam, or is located at a position slightly recessed indoor from the vertical plane. ,
An exterior material support mechanism including a bracket fixed to the column, beam or steel structural wall portion and penetrating the heat insulating material, and a furring strip fixed to the bracket and to which the exterior material can be attached is provided.
An exterior surface material is attached to the furring strip on the outdoor side of the heat insulating material as the exterior material, and the exterior surface material extends substantially over the structural skeleton region and the opening region. The outer wall structure according to claim 1, wherein the vertical outer wall surface is formed.
The exterior material extends along the boundary between the opening region and the structural skeleton region as a working joint that compensates for or absorbs differences in behavior, displacement, or deformation between the columns and beams and the steel structural wall portion. The outer wall structure according to claim 1 or 2, wherein a vertical joint and / or a horizontal joint formed by filling the joint space with a sealing material for exterior is formed.
Buildings other than column spans in which the opening area is formed in the column spans on the entire outer circumference of the building, the steel structure wall portion and the interior wall portion are arranged in all the opening areas, or the bearing wall of the concrete structure is installed. The present invention according to any one of claims 1 to 3, wherein the opening region is formed in the column spans on the entire outer periphery of the above, and the steel structure wall portion and the interior wall portion are arranged in all the opening regions. Outer wall structure.
The components of the steel structure wall portion and the components of the interior wall portion are separated from each other, and a buffer band that insulates solid propagating sound, vibration, and heat transfer is provided between the steel structure wall portion and the interior wall portion. The outer wall structure according to any one of claims 1 to 4, wherein the outer wall structure is formed between the two.
The outdoor side interface of the insulation is identified by the plurality of indoor sides of the furring strip as a vertical surface (Va) substantially parallel to the exterior substrate, and the exterior insulation layer is with the insulation. An air layer or a ventilation layer formed between the exterior material and a moisture-permeable waterproof sheet interposed between the heat insulating material and the exterior base surface, or an outdoor side surface of the heat insulating material. The outer wall structure according to claim 2, wherein the outer wall structure includes a moisture-permeable waterproof sheet.
The heat insulating material is an inorganic fiber-based heat insulating material, and the joint formed between the exterior base surface material and the column and / or beam is a refractory joint having an inorganic sealing material, and the steel structural wall. The outer wall structure according to any one of claims 1 to 6, wherein the wall body of each opening region composed of a portion and an interior wall portion has a fire resistance performance of one hour.
The structural skeleton of a framing concrete building consisting of concrete columns and beams is covered with a heat insulating layer on its outdoor side, and is substantially continuous across multiple column spans and / or multiple floors. In the heat insulating structure of a building in which a heat insulating layer extending in a concrete manner is formed on the outdoor side of the structural frame.
The first heat insulating material and the first exterior material constructed by the external heat insulating method on the outdoor side surface of the structural frame area composed of the columns and beams located at the outer edge or the outer peripheral portion of the building.
It has a second heat insulating material and a second exterior material constructed by the external heat insulating method on the outer wall of the double wall structure constructed in the opening area surrounded by the columns and beams.
The outer wall of the double wall structure is arranged in the opening region, and is arranged in the opening region with a steel structure wall portion having studs of the steel structure and an indoor side from the steel structure wall portion. It has an interior wall part with a wall base and
The steel structural wall portion has an exterior base surface material fixed to the stud so as to close the opening region on the outdoor side of the stud, and the outdoor side surface of the exterior base surface material and the outdoor side of the structural skeleton region. As for the side surface, a single or common exterior base surface extending substantially continuously is formed in the structural skeleton region and the opening region.
The first and second heat insulating materials are attached to or laid on the exterior base surface so as to cover the exterior base surface and are continuous with each other, and the first and second exterior materials are the first and second exterior materials. Continuing with each other on the outdoor side of the insulation, the insulation and exterior have a substantially uniform or even exterior insulation layer that is continuous over the structural skeleton area and opening area on the outdoor side of the columns, beams and outer walls. Insulation structure of a building characterized by being formed in.
The outdoor side surface of the exterior base surface material is located in the plane of the vertical plane (V) specified by the outdoor side surface of the column and the beam, or is located at a position slightly recessed indoor from the vertical plane. ,
An exterior material support mechanism including a bracket fixed to the pillar, beam or outer wall and penetrating the heat insulating material, and a furring strip fixed to the bracket and to which the exterior material can be attached is provided.
An exterior surface material is attached to the furring strip on the outdoor side of the heat insulating material as the exterior material, and the exterior surface material extends substantially over the structural skeleton region and the opening region. The heat insulating structure according to claim 8, wherein the vertical outer wall surface is formed.
The exterior material extends along the boundary between the opening region and the structural skeleton region as a working joint that compensates for or absorbs differences in behavior, displacement, or deformation between the columns and beams and the steel structural wall portion. The heat insulating structure according to claim 8 or 9, wherein a vertical joint and / or a horizontal joint formed by filling the joint space with a sealing material for exterior is formed.
8 to 8, wherein the heat insulating material is an inorganic fiber-based heat insulating material, and the inorganic fiber-based heat insulating material is further filled in the hollow region in the frame of the steel structure wall portion and / or the interior wall portion. The heat insulating structure according to any one of 10.
The outdoor side interface of the insulation is identified by the plurality of indoor sides of the furring strip as a vertical surface (Va) substantially parallel to the exterior substrate, and the exterior insulation layer is with the insulation. An air layer or a ventilation layer formed between the exterior material and a moisture-permeable waterproof sheet interposed between the heat insulating material and the exterior base surface, or an outdoor side surface of the heat insulating material. The heat insulating structure according to claim 9, further comprising a moisture permeable waterproof sheet.
In the method of heat insulation of a building in which the structural frame of a concrete building having a framework structure composed of columns and beams of the concrete structure is covered with a heat insulating layer on the outdoor side.
An outer wall of a double wall structure formed by a steel structure wall portion having steel studs and an interior wall portion having a steel wall base arranged at intervals from the steel structure wall portion to the indoor side. , Installed in the opening area surrounded by the columns and beams located on the outer edge or outer periphery of the building
The steel structure wall portion has an exterior base surface material fixed to the stud so as to close the opening area on the outdoor side of the stud, and from the outdoor side surface of the exterior base surface material and the pillar and the beam. With respect to the outdoor side surface of the structural skeleton region to be constructed, a single or common exterior base surface extending substantially continuously is formed in the structural skeleton region and the opening region.
The first heat insulating material and the first exterior material are applied to the exterior base surface of the structural frame region by the external heat insulating method, and the second heat insulating material and the second exterior material are applied to the exterior base surface of the steel structure wall portion. It is constructed by the external insulation method,
The first and second heat insulating materials are attached to or laid on the exterior base surface so as to cover the exterior base surface and are continuous with each other, and the first and second exterior materials are the first and the first and the above. A substantially uniform or even exterior heat insulating layer that is substantially continuously arranged on the outdoor side of the second heat insulating material and is continuous over the structural skeleton region and the opening region is formed on the outdoor side of the structural skeleton and the outer wall. A method of insulating a building, which is characterized by being done.
The outdoor side surface of the exterior base surface material is located in the plane of the vertical plane (V) specified by the outdoor side surface of the column and the beam, or is located at a position slightly recessed indoor from the vertical plane. ,
An exterior material support mechanism including a bracket fixed to the column, beam or steel structural wall portion and penetrating the heat insulating material, and a furring strip fixed to the bracket and to which the exterior material can be attached is provided.
An exterior surface material is attached to the furring strip on the outdoor side of the heat insulating material as the exterior material, and the exterior surface material extends substantially over the structural skeleton region and the opening region. The heat insulating method according to claim 13, wherein a vertical outer wall surface is formed.
As a working joint that compensates for or absorbs differences in behavior, displacement, or deformation between the columns and beams and the steel structural wall portion, for exterior use in a joint space extending along a boundary between the opening region and the structural skeleton region. The heat insulating method according to claim 13 or 14, wherein vertical joints and / or horizontal joints filled with a sealing material are formed on the exterior material.
Buildings other than column spans in which the opening area is formed in the column spans on the entire outer circumference of the building, the steel structure wall portion and the interior wall portion are arranged in all the opening areas, or the bearing wall of the concrete structure is installed. The opening region is formed in the column span of the entire outer circumference of the above, and the steel structure wall portion and the interior wall portion are arranged in all the opening regions.
An air layer or a ventilation layer is formed between the first and second heat insulating materials and the first and second exterior materials, and moisture permeation is formed between the first and second heat insulating materials and the exterior base surface. A waterproof sheet is inserted, or a moisture permeable waterproof sheet is arranged on the outdoor side surface of the first and second heat insulating materials, and the air layer or the ventilation layer and the moisture permeable waterproof sheet are spread over the entire area of the exterior heat insulating layer. The heat insulating method according to any one of claims 13 to 15, wherein the heat insulating method is extended over a period of time.
A buffer band is provided between the steel structure wall portion and the interior wall portion so as to separate the components of the steel structure wall portion from each other and to insulate the transmission of solid propagating sound, vibration and heat. The heat insulating method according to any one of claims 13 to 16, wherein the heat insulating method is formed in 1.
13. To claim 13, wherein an inorganic fiber-based heat insulating material is used as the heat insulating material, and the hollow region in the frame of the steel structure wall portion and / or the interior wall portion is further filled with the inorganic fiber-based heat insulating material. The heat insulating method according to any one of 17.
14. The aspect of claim 14, wherein the boundary surface on the outdoor side of the heat insulating material is specified as a vertical surface (Va) substantially parallel to the exterior base surface by a plurality of indoor side surfaces of the furring strip. Insulation method.
A concrete building having the outer wall structure according to any one of claims 1 to 7 or the heat insulating structure according to any one of claims 8 to 12.
A method for constructing a concrete building including the heat insulating method according to any one of claims 13 to 19.