JP2821866B2 - Construction method and construction members for concrete buildings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a concrete building and a construction member therefor.

[0002]

2. Description of the Related Art In the construction of reinforced concrete buildings, a so-called prefabrication method , that is , a method of assembling and integrating members manufactured in a factory on site has become widespread. FIG. 9 illustrates a joint portion of a conventional precast reinforced concrete slab.
At the intersection of the upper and lower load-bearing walls W ₁ , W ₂ and the floor slab S, a special process is applied to each joint end, and the ends of the vertical bars B, B of the load-bearing walls W ₁ , W ₂ are welded to the attachment plate F. It is connected to.

[0003]

[0007] The above-described prior art, the mold assembly dismantling work at the construction site, eliminating the concrete設作industry have contributed to the shortening of the construction period. However, the corner portion connecting the flat wall between that <br/> fabricated in a factory, the structure of the intersection, the process is complex, difficult to say that a simplified. In terms of strength, unevenness in strength is inevitable because the weak parts in the structure are left to the site work compared to the conventional construction method in which a formwork is assembled on site and a bent steel bar is passed through the bent part. The present invention provides a construction method and a construction member which can simplify the above-mentioned complicated joint portion, shorten the construction period, and is superior in strength.

[0004]

According to the construction method of a concrete building of the present invention, the wall of the concrete building is formed in an L-shape.
Section, T-section, or a cross-section of the cross-shaped cross-section, the cross member in the form that is divided into a flat wall portion between the intersection each other, when fabricating the Hirakabe member, corresponding with the same height of the two members PC in position
Steel insertion sheath through the required number in the horizontal direction Contact Kutotomo
Then, a perpendicular PC steel material insertion sheath is
Contact can through the required number, the upper Symbol each member the PC steel insertion sheath their respective arranged so as to communicate with the construction site,
Of tension through the PC steel on the respective PC steel insertion sheath
Allowed, and fixing both ends thereof to the building outer wall edge, it heavy above or below
Of the same type of cross member,
It is characterized in that the floors are connected to each other to build up one floor at a time .

[0005] Conventional,factorysoAll the walls made are flat walls
At the construction site, where important structural corners and intersections
ContinueDoneIt had difficulties that had to be addressed. That troublesome horn
Section and intersection are integrated in this inventionforAs a member in advance
factorysoI will make it. As a result, its corners, intersections and
When assembling with a flat wall, the end faces of the plate
Became a match. Assembled with simple butt jointsOr
The latest superior prestressing method, the joint surface
With a small number of PC steel materials and integrated.
Edge of building exteriorendIt only needs to settle in. Moreover,factory
soL-shaped manufacturedcross section, T typecross section, Cross-shaped cross member
Is justOf flat wall membersReinforcement bones in various directions, not as intermediaries
As a pillar material that has been flexed out and obtained independence,flatwallElementWhenflat
wallElementConnect and support.

[0006] Construction method of the present invention, in addition to be assembled coupling a flat wall member only tightening adjustment by PC steel clamping alignment in the vertical direction also includes floor <br/> material is also possible. That is ,
In addition to the above water cross member flat direction of the PC steel insertion sheath, since the PC steel insertion sheath in the vertical direction are passed through the required number, the same <br/> overlapping the up or down at the construction site each vertical PC steel insertion sheath shape cross member communicates you build into upper floors one by one floor. And up to the top floor
If it is constructed in the above, the PC steel material in the vertical direction that communicates vertically
Tighten the PC sheath through the insertion sheath, and
Needless to say, it will settle on the rooftop and foundation of the building.

[0007] This construction for a member to be used in the method of the invention is,
Wall the L-shaped cross section of the concrete buildings, T-shaped cross-section, or a cross section of the cruciform cross-section, a the cross-member which is manufactured work are classified into a flat wall portion between the intersection each other, both high The height corresponds to the height of each floor of the building, and corresponds to the multi-level reinforcing bars arranged along the cross-sectional shape and the flat wall section .
PC steel in horizontal direction of flat wall member or adjacent cross member
It shall be the characterized and a horizontal PC steel insertion sheath through a position sheath and communicating for insertion.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Figure 1, Figure 2 shows an example of a basic embodiment of the present invention. In this drawing, only the first floor of a four-room building is taken out, and all the walls are L-shaped cross members L, T-shaped cross members T,
It is composed of a cross-shaped cross member 10 and a flat wall member 1. Note that window Hirakabe member 1, an opening of the doorway or the like, is intended to become only approximately beams is set to Hirakabe member 1a. All of these members L, T, 10, 1, 1a are tightened and integrated by a horizontal PC steel material (chain line) P passed through an inner sheath. Each horizontal PC steel material P is fixed to the outer wall ends of both sides as shown in FIG. L-shaped intersection in FIG.
On the outer wall surface 4 of the member L or the T-shaped cross member T, a recess 5 for fixing a PC steel material is formed in advance. Attach the grip 7 to the horizontal PC steel material P with the supporting plate 6 fitted and tensioned to the required tension.
Things Bearing plate 6 to fix submerged to the bottom of the PC steel fixing recess 5, also possible to fill the grout in a gap between the sheath 2 and the horizontal PC steel P, and fills the PC steel fixing recess 5 in mortar In each case, the description is omitted because of the prior art.

As can be seen from the elevational view of FIG. 2, a horizontal PC steel material P is formed on a wall surface parallel to the paper surface, which is composed of two flat wall members 1 without openings and each of the cross members L, L, T. It is arranged in three steps. However, since the perpendicular wall surface to the paper it is Hirakabe member 1a only beams, PC steel with fixing the horizontal PC steel P
Only two material fixing recesses 5 are visible at the height of the beam. FIG. 8 shows an embodiment of a three-story apartment house using a flat wall member 1a having only beams as a front surface. Stranded PC steel P ₁ to the position of the beam of each floor Hirakabe member 1a is through aligned vertically one by two, and fixing the PC steel fixing recess 5 of the building across.
Each floor L-shaped, T-shaped cross member L, as the vertical PC steel material P ₂ to T, because they established the foundation or lower floor, the floor of Hirakabe member 1a bottom floor member 8 and immediately beneath Rights It is integrated with the beam of the wall member 1a. In addition, the referred to as the integrated here,
It indicates that frictional engagement close to adhesion has been achieved by strong tightening of the PC steel materials P ₁ and P ₂ .

The structure of the flat wall member 1 of the present invention and the flat wall member 1a having an opening thereof are the same as those of a conventional reinforced concrete slab manufactured at a factory. Therefore, only the cross members unique to the present invention will be described in detail. 3 to 5 and the cross section of an example of the cross-member for a flow that includes mold 9, 10, 11 shows a reinforcement state. The upper open part drawn by the dotted line is the concrete casting surface 12
It is. Since each cross member is a full height same section, the intersections
Building member flow included formwork 9,10,11 respectively be identical cross section, high <br/> is (paper direction perpendicular in FIGS. 3-5) is as a rule 1
Adjust to the height of the floor.

Each of the cross member casting molds 9, 10, 11 has L-shaped, T-shaped, and cross-shaped braided reinforcing bars B ₁ , B, respectively.
₂ , B ₃ are arranged in multi-stages on the whole height , and their braided reinforcing bars B ₁ ,
B ₂ , B _3, inside of the cross member pouring form 9, 10, 1
1 through a sheath 2 reaching the full height . Braided rebar B _1,
Since B ₂ and B ₃ are bent so as to follow the cross-sectional shape of each cross member, there is little possibility of stress concentration and breakage due to welding and connection of the corners as in the above-described conventional technology. The cross in Figure 5
Cross member flow included formwork 11 of the upper mold 11a is applied to the formwork T-shaped cross-member for a pouring mold 10 having the same shape as that of the FIG. First , the T-shaped part is filled with concrete, and when it hardens a little, the upper mold 11a is placed and molded into a cross shape.

The thickness of each cross member and flat wall member is, for example, 180 mm, and the joint gap when arranging them at the construction site is about 15 mm. Therefore , the sheath 2 of both members
It is somewhat troublesome to arrange the outer ends vertically so that they are concentric. The connection guide tube 13 of the sheath 2 shown in FIG. Figure 7 is an outer end and the outer end of Hirakabe member 1 of L-shaped cross member L, butt through a joint gap 14, by connecting the guide tube 13 to the outer edge of both the sheath 2 aligned coaxially, horizontal The state which passed PC steel material P is shown. The connection guide tube 13 is inserted and fixed in half at the outer end of the sheath 2 on one side, and after inserting the tip of the exposed portion into the mating sheath 2, the two members L, 1 are brought together. In addition , the exposed contact
It is preferable to narrow the distal end of the connecting guide tube 13 to a minimum diameter through which the horizontal PC steel material P can pass, and to select the direction in which the horizontal PC steel material P is inserted so as to easily pass through the narrowed portion. The joint material is inserted into the joint gap 14 and tightened as before.

[0013]

The present invention has clarified the problems of the conventional prefabrication of concrete buildings, and has opened a construction method for completely eliminating the work of assembling corners and intersections at construction sites. Strength of the building, the corners of the wall especially affects the earthquake resistance, not only improve the quality of all the intersections are manufactured in a factory, and a member for supporting connecting the flat wall member as the simplest self pillar. As a secondary effect, temporary assembling of the wall at the site has been dramatically improved.

Then , since the connection between the cross member and the flat wall member is a butt joint of the plate end faces, the joining means is a strong tightening joint made entirely of PC steel. PC steel was changed from a mere prestressing means to a new joining means that tightens and integrates a plurality of joint surfaces arranged in series at once. The cross member, the temporarily assembled one by one storey to Hirakabe member, clamping aligned vertically and horizontally in the horizontal direction of PC steel reaches on both sides outer wall edge, at a stroke from the roof to the foundation by vertical PC steel in the desired rank clamping Therefore, the simplification of the on-site work, the labor saving and the shortening of the construction period are remarkable, and the quality reliability, especially the improvement of the earthquake resistance is remarkable.

[Brief description of the drawings]

FIG. 1 is a plan view showing a basic embodiment of the present invention.

FIG. 2 is an elevation view of FIG.

3 is a cross-sectional view of the cross member flow inclusive formwork in L-shaped cross-member manufacturing.

FIG. 4 is a cross-sectional view of a casting mold for a cross member during manufacture of a T-shaped cross member.

FIG. 5 is a cross-sectional view of a cross member pouring form during manufacture of a cross-shaped cross member.

FIG. 6 is an explanatory sectional view of a PC steel material fixing section.

FIG. 7 is an explanatory view of a sheath connection portion between members.

FIG. 8 is an elevational view of an embodiment of the present invention applied to an apartment house.

FIG. 9 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Flat wall member 1a Flat wall member 2 Sheath L L-shaped cross member T T-shaped cross member 10 Cross-shaped cross member P Horizontal PC steel P ₁ Stranded wire PC steel P ₂ Vertical PC steel

Continuation of the front page (51) Int.Cl. ⁶ Identification symbol FI E04B 2/56 601 E04B 2/56 601E 601F 604 604B 605 605Z 621 621 621A 621S E04G 21/12 104 E04G 21/12 104C (58) Int.Cl. ⁶ , DB name) E04G 21/14

Claims (2)

(57) [Claims] 1. An L-shaped section of a wall of a concrete building,
Manufactures cross members and flat wall members that are divided into intersections with T-shaped cross sections or cross-shaped cross sections and flat walls between the intersections.
To time, the contact Ku through the required number of PC steel insertion sheath horizontally corresponding position of the same height of the two members, upper
The required cross-section member must have a vertical PC steel insertion sheath.
Aft through number, the horizontal direction of the PC of their respective on the Symbol each member at the construction site
Steel insertion sheath is arranged so as to communicate, their respective horizontal
Of tension through the PC steel in the direction of the PC steel insertion sheath
Allowed, and fixing both ends thereof to the building outer wall edge, it heavy above or below
Of the same type of cross member,
The construction method of a concrete building, characterized in that the floors are connected to each other and are constructed on the upper floors one by one . 2. An L-shaped section of a wall of a concrete building,
T-shaped cross section or a cross section of the cruciform cross-section, and a the cross member fabricated by classifying into a flat wall portion between the intersection each other, both the height corresponding to the height of each floor of a building And a multi-step rebar arranged along the cross-sectional shape and a horizontal direction of a flat wall member corresponding to the flat wall portion or an adjacent cross member.
Horizontal through the position communicating with the sheath for inserting the PC steel
And a direction of the PC steel insertion sheath, construction members of concrete buildings, characterized in that.