JPH07279255A - Building unit - Google Patents

Abstract

PURPOSE:To promote productivity, execution efficiency and strength by providing floor beams changing their height lengthwise to a framed structure unit and, at the same time, connecting a main floor beam and an auxiliary beam having different beam height and weam width each other to form a building unit. CONSTITUTION:In the case a second floor entrance, etc., are provided to an upper floor building unit 11A in a unit building 10, a floor girder 20A corresponding to an entrance hall changes its height lengthwise. After that, the girder 20A is formed by connecting a main floor beam 31 having a higher beam height to an auxiliary floor beam 32 having a lower beam height and, at the same time, the bottoms of the beams 31 and 32 are arranged. Then, beam width of the beam 32 is set in wider than that of the beam 31, and the beam 32 is equipped with sectional performance exceeding that of the beam 31. According to the constitution, a low floor level can be formed without cutting the floor beams, structural strength of the building unit can be accomplished by unit itself, and factory productivity can be promoted.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to building units.

[0002]

2. Description of the Related Art As a building industrial production system, a building unit consisting of a frame structure in which columns, floor beams, and ceiling beams are joined in a box shape is produced at a factory, and the building unit produced at this factory is transported to the site. There is one that constructs a unit building by joining a plurality of building units horizontally and vertically on a foundation.

In this building unit, if the floor level of the entrance, the step-down room, etc. is lower than the standard level, as described in JP-A-59-4736, the entrance and the step-down part are Part of the corresponding floor beams will be cut.

[0004]

However, in the building unit of the prior art, since the floor beams are partly cut, there are the following problems.

Since a part of the floor beam is cut, the structural strength cannot be completed by the unit itself, and the structural strength must be imposed on the foundation and the adjacent building unit. That is, there is a demerit that the great advantage of the unit building that the structural plan is simplified by completing the structural strength for each unit cannot be enjoyed and that it is necessary to reinforce the adjacent building unit. Especially 2
When providing an entrance, step-down room, etc. in the upper floor unit, such as reinforcing the lower floor unit, structural strength,
It involves a great deal of difficulty in terms of accommodation.

Since part of the floor beam is cut, there is no choice but to construct the entrance floor and the step-down floor in the unit on site. That is, it is not possible to enjoy the great merits of the unit building such as increasing the factory production rate of the building unit, shortening the construction period, and achieving uniform quality.

The present invention makes it possible to construct a low floor level structure such as an entrance, a step-down room, etc. in a building unit without cutting floor beams, complete the structural strength of the building unit by itself, and The purpose is to increase the factory production rate.

[0008]

According to a first aspect of the present invention, in a building unit including a frame structure in which a column, a floor beam and a ceiling beam are joined in a box shape, the beam strain changes in the beam longitudinal direction. The floor beam is formed by joining a main floor beam with a high beam and a sub floor beam with a low beam, and the beam width of the sub floor beam is smaller than the beam width of the main floor beam. It was intended to be great.

According to a second aspect of the present invention, in a building unit composed of a frame structure in which a column, a floor beam and a ceiling beam are joined in a box shape, a floor beam in which beam beams are changed in the beam longitudinal direction is used. Having the main floor beam having a high beam beam and the sub-floor beam having a low beam beam, the floor beam having a joint part between the main floor beam and the sub-floor beam,
A reinforcing plate is provided between the end of the main floor beam and the upper surface of the sub floor beam.

According to a third aspect of the present invention, in addition to the first or second aspect of the present invention, the main floor beam and the sub-floor beam are joined to each other at the end portion of the main floor beam and the sub-floor beam. The end portion is joined through a flat plate whose one side has the same length as the beam of the main floor beam and whose other side has the same width as the beam width of the sub floor beam. .

The present invention according to claim 4 provides the invention according to claims 1 to 3.
In the present invention described in (1), the main floor beam is a channel steel and the sub floor beam is a steel pipe.

The present invention according to claim 5 provides claims 1 to 4.
Further, in the present invention described in (1), a stud fitting is provided on the upper surface of the sub floor beam, and the upper surface level of the stud fitting is aligned with the upper surface level of the main floor beam.

[0013]

According to the present invention as set forth in claim 1, the following effects are obtained. When building a low-floor level structure such as an entrance or a step-down room with building units, lower the beam beams of the floor beams at the part corresponding to the low-floor level part such as the entrance or step-down part. This makes it possible to construct a low floor level structure without cutting the floor beams.

Since the floor beam of the building unit is not cut, the structural strength can be completed by the unit itself, and it is not necessary to bear the structural strength on the foundation or the adjacent building unit. That is, by completing the structural strength for each unit, the structural planning of the unit building can be simplified. Moreover, it is not necessary to reinforce the adjacent building unit.

Since the floor beams of the building unit are not cut, the floor of the entrance provided in the unit,
The floor of the step-down part can be factory-constructed.
That is, it is possible to increase the factory production rate of building units, shorten the construction period of unit buildings, and achieve uniform quality.

The floor beam of the building unit is formed by joining a main floor beam with a high beam and a sub floor beam with a low beam, and the bottom of the main floor beam and the bottom of the sub floor beam are aligned. Therefore, when the building unit is mounted on the foundation or the lower floor building unit, both the main floor beam and the sub floor beam of the building unit are mounted on the foundation upper surface and the ceiling girder upper surface of the lower floor building unit. Can be placed stably. As a result, the unit building can be stably assembled and constructed.

The main floor beam has a high beam width and a small beam width,
The sub-floor beam has a low beam width and a large beam width, and the cross-sectional areas of the main floor beam and the sub-floor beam are approximated to each other, and as a result, their cross-sectional performance (section coefficient Etc.) can be approximated to each other while their beams are made as different as possible. That is, it is possible to form a low floor level portion that is as low as possible with respect to the standard level while economically securing the cross-sectional performance required as a floor beam without excess or deficiency.

According to the present invention described in claim 2,
In addition to the action of, there is the following action. Since the reinforcing plate is interposed between the end of the main floor beam and the upper surface of the sub floor beam, stress concentration due to bending stress at the joint between the main floor beam and the sub floor beam is prevented, and The stress transmission to and from the sub floor beam can be made smooth.

The present invention according to claim 3 has the following effects. The end of the main floor beam and the end of the sub-floor beam have a side length that is the same as the beam of the main floor beam and the width of the sub-floor beam is the length of the other side. Since they are joined together, it is possible to prevent stress concentration at the joint between the main floor beam and the sub floor beam, and to smoothly transmit stress between the main floor beam and the sub floor beam.

The present invention according to claim 4 has the following actions. By assuming that the main floor beam is channel steel and the sub-floor beam is a steel pipe, the cross-sectional performance (cross-section coefficient, etc.) between the main floor beam and the sub-floor beam is approximated to each other, Their beams can be as different as possible. That is, it is possible to form a low floor level portion that is as low as possible with respect to the standard level while economically securing the cross-sectional performance required as a floor beam without excess or deficiency.

The present invention according to claim 5 has the following effects. When the low-floor level part such as the exposed part of the entrance is constituted by the sub-floor beam with a low beam, the studs for the entrance door etc. are attached to the stud fittings provided on the upper surface of the sub-floor beam.
At this time, since the stud fitting is set to the same level as the upper surface level of the main floor beam, the stud height on the stud fitting is the same as that of the standard stud provided on the standard floor level portion. That is, the standard studs attached to the standard floor level portion can be used as the studs attached to the low floor level portion, and the standardization of the members can be promoted.

[0022]

FIG. 1 is a schematic view showing a part of a unit building to which a building unit according to an embodiment of the present invention is applied, FIG. 2 is a schematic view showing a floor beam, (A) is a plan view, (B) is a front view, FIG. 3 is a perspective view showing a main part of a building unit, FIG. 4 is a schematic view showing a main part of a building unit, (A) is a plan view, (B) is a front view, ( C) is an end view and FIG. 5 is FIG.
FIG. 6A is a view from the direction of the arrow V in FIG.
FIG. 6 is a cross-sectional view taken along the line VI.

As shown in FIG. 1, the unit building 10 is constructed by transporting a factory-produced building unit 11 to a site and joining a plurality of building units 11 in a horizontal direction and a vertical direction on a foundation (however, , Fig. 1 shows the upper floor building unit 11A
And only the joining state of the lower floor building unit 11B is shown).

Here, the building unit 11 is of a frame type as shown in FIG. 1 as a standard, and four square steel pipe columns 15 are arranged at four corners, and each column 15 has a lower end portion. Joining the four corners of the floor structure 17 to the provided grooved steel plate connecting pieces 16 and joining the four corners of the ceiling structure 19 to the grooved steel plate connecting pieces 18 provided at the upper ends of the columns 15. In, it is configured to form a box-shaped frame structure.

The floor structure 17 includes four channel steel floor girders 2.
0 so as to be superposed on the inside of the connecting piece 16,
Welded to form the outer frame. Further, the floor structure 17 is
A plurality of floor girders 21 arranged in parallel with each other are bridged between the floor girders 20, 20 facing each other, and groove-shaped steel plate connecting pieces provided at both ends of each floor girder 21 are used as the corresponding floor girders. Welded to each of the 20. Furthermore, the floor structure 17
Is a plurality of wooden floor joists 23 arranged in parallel to each other orthogonally arranged on each floor beam 21, and each floor joist 23 is fixed to the upper portion of the floor joists 21 with an adhesive or nailing, A floor plate is fixed to the upper part of each floor joist 23 with an adhesive or nailing.

The ceiling structure 19 is formed by fitting and welding four channel steel ceiling girders 25 so as to overlap the inside of the connecting piece 18 to form an outer frame. Also, the ceiling structure 1
9 fixes each of the plurality of wooden ceiling joists 26 arranged in parallel to each other to the ceiling girder 25 with an adhesive or nailing. Further, in the ceiling structure 19, a ceiling plate is fixed to the lower portion of each ceiling joist 26 with an adhesive or nailing.

In the unit building 10, the floor structure 1 of the left and right building units 11, 11 that are adjacent in the horizontal direction
The floor girders 20 that form part 7 are bolted to each other, and the ceiling girders 25 that form the ceiling structure 19 are also bolted to each other, so that the building units 11 and 11 are horizontally aligned. Are joined together. Moreover, regarding the joining of the upper and lower building units 11A and 11B that are adjacent to each other in the vertical direction, the ceiling structure 1 of the lower floor building unit 11B is connected.
Ceiling girder 25 that constitutes 9 and the upper-floor building unit 1
Among the floor girders 20 constituting the floor structure 17 of 1A, one corresponding to the ceiling girder 25 is bolted.

In the unit building 10, however, the upper-floor building unit 11A constitutes a second-floor entrance (or a step-down room), and the floor girder 20A corresponding to the projecting part is the beam of the beam. The reason is changed in the longitudinal direction of the beam.

As shown in FIG. 2, the floor girder 20A is formed by joining a main floor beam 31 having a high beam and a sub floor beam 32 having a low beam, and the bottom surface of the main floor beam 31 and the sub floor beam 32 are joined together. It is aligned with the bottom of. Here, the beam width of the sub floor beam 32 is set to be larger than the beam width of the sub floor beam 31.

In FIG. 2, reference numeral 41 denotes a stud mounting metal fitting for fixing the entrance door. Here, the stud mounting brackets 41 are provided on both surfaces of the sub floor beam 32, and the upper surface level of the stud mounting brackets 41 is aligned so as to be at the same level as the upper surface level of the sub floor beam 31.

The main floor beam 31 is the upper floor building unit 1
It is made of the same channel steel as other floor girders 20 of 1A. On the other hand, the sub floor beam 32 is made of a steel pipe. The sub floor beam 32 is assumed to have a cross-sectional performance equal to or higher than that of the main floor beam 31. For example, the main floor beam 31 is 150 × 50 × 50 (m
m) or channel steel having a cross-sectional dimension of 150 × 75 × 75 (mm), and a steel pipe having a cross-sectional dimension of 100 × 100 (mm) can be used as the sub-floor beam 32.

However, the joint structure of the floor girder 20A in the upper floor building unit 11A is as shown in the following (1) to (3) (FIGS. 3 to 6).

(1) The main floor beams 31 are fitted and welded so as to overlap the inside of the connecting pieces 16 provided on the pillars 15 on both sides of the entrance portion formed by the upper floor building unit 11A.

(2) The flat steel plate 3 is attached to the grooved steel end surface of the main floor beam 31.
The steel pipe end surface of the sub-floor beam 32 is welded via the No. The flat steel plate 33 has the same length as the beam of the sub floor beam 31 as one side length, and the same width as the beam width of the sub floor beam 32 as the other side length.

At this time, in order to compensate for the lack of the welding length of the main floor beam 31 and the flat steel plate 33 with respect to the transmission of the load from the main floor beam 31 to the flat steel plate 33, a groove steel is made inside the main floor beam 31. The reinforcing metal fitting 34 is welded, and the end surface of the reinforcing metal fitting 34 is also welded to the flat steel plate 33.

(3) In order to prevent stress concentration due to bending stress at the joint between the main floor beam 31 and the sub floor beam 32, a flat steel plate 35 is welded to the upper surface of the sub floor beam 32 and both side edges of the flat steel plate 35 are welded. Portion and both side edges on the upper side of the flat steel plate 33 have a triangular reinforcing steel plate 3
6 and 36 are welded. As a result, the bending load at the joint between the main floor beam 31 and the sub floor beam 32 is dispersed over the entire upper surface of the sub floor beam 32.

The load flow in the upper-floor building unit 11A is as follows: [column 15 → connecting piece 16 → main floor beam 31, reinforcing metal fitting 3]
4 → flat steel plate 33 → reinforced steel plate 36 → flat steel plate 35 → sub floor beam 3
2].

The operation of this embodiment will be described below. When building a low-floor level structure such as an entrance and a step-down room by the building unit 11A, the beam of the floor girder 20A is partially lowered at the part corresponding to the low-floor level part such as the entrance and the step-down part. By doing
A low floor level structure can be constructed without cutting the floor girder 20A.

Since the floor girder 20A of the building unit 11A is not cut, the structural strength can be completed by the unit itself, and it is not necessary to bear the structural strength on the foundation or the adjacent building unit. That is, by completing the structural strength of each unit 11, the unit building 10
Can simplify the structural planning. Moreover, it is not necessary to reinforce the adjacent building unit 11.

Since the floor girder 20A of the building unit 11A is not cut, the floor of the entrance portion and the step-down portion provided in the unit 11A can be factory-constructed. That is, the factory production rate of the building unit 11 can be increased, the construction period of the unit building 10 can be shortened, and the quality can be made uniform.

The floor girder 20A of the building unit 11A is formed by joining a main floor beam 31 having a high beam and a sub floor beam 32 having a low beam, and the bottom of the main floor beam 31 and the bottom of the sub floor beam 32 are joined together. When the building unit 11A is mounted on the foundation and the lower floor building unit 11B, the main floor beam 31 and the sub-floor beam 3 of the building unit 11A can be aligned.
2 together with their basic upper surface, lower floor building unit 1
It can be stably mounted on the upper surface of the ceiling girder 25 of 1B. Thereby, the unit building 10 can be stably assembled and constructed.

The main floor beam 31 has a high beam width and a small beam width, and the sub floor beam 32 has a low beam width and a large beam width. In between, their cross-sectional areas can be approximated to each other, resulting in their cross-sectional performances (section modulus, etc.) being approximated to each other, while their beams can be made as different as possible. That is, it is possible to form a low floor level portion that is as low as possible with respect to the standard level while economically securing the cross-sectional performance required as a floor beam without excess or deficiency.

Since the reinforcing plate (flat steel plate 35, reinforcing steel plate 36) is interposed between the end portion of the main floor beam 31 and the upper surface of the sub floor beam 32, the main floor beam 31 and the sub floor beam 32 are separated from each other. Stress concentration due to bending stress at the joint is prevented, and the main floor beam 31 and the sub floor beam 3
The stress transmission between the two can be made smooth.

One end of the main floor beam 31 and the end of the sub floor beam 32 have the same length as the beam of the main floor beam 31 and the other side has the same width as the beam width of the sub floor beam 32. Flat steel plate with a length of 33
The main floor beam 31 and the sub-floor beam 32 because they are joined via
Prevents stress concentration at the joint with the main floor beam 31 and the sub floor beam 3
The stress transmission between the two can be made smooth.

The main floor beam 31 is a channel steel and the sub floor beam 32 is
Is a steel pipe, it is possible to make the beam differences between the main floor beam 31 and the sub floor beam 32 as close as possible while making their cross-sectional performances (section modulus, etc.) similar to each other. . That is, it is possible to form a low floor level portion that is as low as possible with respect to the standard level while economically securing the cross-sectional performance required as a floor beam without excess or deficiency.

When the low floor level part such as the exposed part of the entrance is constituted by the sub-floor beam 32 having a low beam, the stud for the entrance door is attached to the stud mounting bracket 41 provided on the upper surface of the sub-floor beam 32. . At this time, since the stud mounting bracket 41 is set to the same level as the upper surface level of the main floor beam 31, the stud height on the stud mounting bracket 41 is the same as that of the standard stud provided in the standard floor level portion. That is, the standard studs attached to the standard floor level portion can be used as the studs attached to the low floor level portion, and the standardization of the members can be promoted.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific structure of the present invention is not limited to this embodiment, and changes in design within the scope not departing from the gist of the present invention can be made. Even if it exists, it is included in the present invention. For example, the beams of the floor beams are not limited to those that change discontinuously in the beam longitudinal direction, but may change continuously.

Further, the building unit of the present invention is not limited to the entrance and the step-down room, but can be applied to ones that constitute a doorway, a bathroom, a garage, and the like.

[0049]

As described above, according to the present invention, it is possible to construct a low floor level structure such as an entrance, a step-down room, etc. in a building unit without cutting floor beams, and to improve the structural strength of the building unit. It can be completed by itself and the factory production rate of building units can be increased.

[Brief description of drawings]

FIG. 1 is a schematic view showing a part of a unit building to which a building unit according to an embodiment of the present invention is applied.

FIG. 2 is a schematic view showing a floor beam, (A) is a plan view, and (B) is a front view.

FIG. 3 is a perspective view showing a main part of a building unit.

FIG. 4 is a schematic view showing a main part of a building unit, (A) is a plan view, (B) is a front view, and (C) is an end view.

5 is a view seen from the direction V in FIG. 4 (A).

6 is a sectional view taken along line VI-VI in FIG. 4 (B).

[Explanation of symbols]

 11A Building unit 15 Pillars 20 and 20A Floor girder (floor beam) 25 Ceiling girder (ceiling beam) 31 Main floor girder 32 Secondary floor girder 33 Flat steel plate (flat plate) 35 Flat steel plate (reinforcing plate) 36 Reinforcing steel plate (reinforcing plate) ) 41 Stud fitting (stud fitting)

Claims (5)

[Claims] 1. A building unit comprising a frame structure in which a column, a floor beam and a ceiling beam are joined in a box shape, and the beam has a floor beam whose beam length changes in the beam longitudinal direction, and the floor beam is a beam. A building unit in which a main floor beam with a high beam and a sub floor beam with a low beam are joined, and the beam width of the sub floor beam is larger than the beam width of the main floor beam. 2. A building unit comprising a frame structure in which columns, floor beams, and ceiling beams are joined in a box shape, and the floor beams have beam beams that change in the beam longitudinal direction, and the floor beams are beams. A main floor beam with a high beam and a sub floor beam with a low beam are joined, and at the joint between the main floor beam and the sub floor beam, between the end of the main floor beam and the upper surface of the sub floor beam. A building unit characterized by interposing a reinforcing plate. 3. The sub-floor in which the end portion of the main floor beam and the end portion of the sub-floor beam have the same length as the beam floor of the main floor beam at the joint portion of the main floor beam and the sub-floor beam The building unit according to claim 1 or 2, wherein the building units are joined together via a flat plate having a beam width equal to the beam width and other side lengths. 4. The building unit according to claim 1, wherein the main floor beam is a channel steel and the sub floor beam is a steel pipe. 5. The building according to claim 1, wherein a stud fixture is provided on an upper surface of the sub floor beam, and an upper surface level of the stud fixture is aligned with an upper surface level of the main floor beam. unit.