JPH0827929A - Construction method of wall type src structure - Google Patents

Abstract

PURPOSE:To make it easy for even unskilled workers to arrange reinforcements while obtaining high earthquake resisting strength and enable the realization of quality improvement, labor saving and shortening of a construction period. CONSTITUTION:A frame 5 formed of a steel column 2, a beam 3 and a brace 4 is erected on a reinforced concrete floor part 16 or a foundation plate 11. Precast concrete plates (PC plates) with longitudinal reinforcements and horizontal reinforcements previously embedded therein are erected with a space corresponding to the wall thickness, with the brace construction face of the frame 5 placed in between, and the upper parts are fixed through a fixture 41 fitted to the beam 3, while the lower parts are fixed through a fixture 24 fitted to the reinforced concrete floor part 16 or the foundation plate 11. Reinforcing bars 50. 51 are disposed at the connecting part of the adjacent PC plates, and concrete is placed in a space between the relative PC plates.

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 an SRC structure (steel-framed reinforced concrete structure), and in particular, it eliminates the need for a temporary formwork when constructing a wall, thereby saving labor and materials and shortening the construction period. The present invention relates to a method for constructing a wall type SRC structure that enables the above.

[0002]

2. Description of the Related Art In a large-scale structure such as a building of a nuclear facility, the wall and floor thickness are several times larger than that of a general building.
It has a reinforced concrete structure that is ten times thicker, and large-diameter reinforcing bars are laid out in large quantities to meet severe seismic resistance requirements, especially for seismic walls. When constructing a thick wall of such a structure, the conventional construction method,
It has been carried out by repeating the four steps of formwork installation, concrete placement, and formwork removal.

Further, in that case, equipment and materials are put in first, or a temporary member such as a deck plate girder for floor casting is supported,
For the purpose of shortening the construction period by simultaneous work on the upper and lower layers,
It uses a temporary steel frame structure.

[0004]

However, in the above-mentioned conventional method, all the steps are carried out on site, and moreover, the work of placing concrete as a temporary formwork and then dismantling the formwork when it has solidified is required. Since it is repeated, a long construction period is required for completion, and the labor amount of each occupation is not averaged and a temporary large amount of labor force is required. There was a problem of becoming a critical path.

Further, there is a problem that the work environment becomes poor due to temporary storage of materials in each process and congestion of work. In addition, even when reinforced work is installed, there are many types of wall thickness and correspondingly many types of rebars are used, so the efficiency of rebar work is poor. There is a problem that many skilled workers are required.

[0006] Further, since the steel frame structure and the like adopted for shortening the construction period are handled as temporary materials for construction, they are not used as permanent structural materials, and therefore the seismic strength of the structure is improved. Does not contribute. Therefore, the present invention has been made by paying attention to such a conventional problem, and by combining a PC plate and a steel brace, even an unskilled person can easily arrange the bar and has a high earthquake resistance, It is an object of the present invention to provide a new method for constructing a wall-type SRC structure that can save labor, improve quality, and shorten the construction period.

[0007]

The method for constructing a wall type SRC structure of the present invention which achieves the above object comprises a step of constructing a frame composed of steel columns, beams and braces on a reinforced concrete floor or foundation plate. , A precast concrete plate (PC plate) in which vertical and horizontal bars are embedded in a factory or a manufacturing yard in advance at a distance corresponding to the wall thickness with the brace structure surface of the frame sandwiched, and the upper part is made into a beam Fixing through the attached fixing hardware and fixing the lower part with the fixing hardware attached to the reinforced concrete floor or foundation plate, arranging reinforcing reinforcing bars at the connecting portion of the adjacent PC plate, and the PC facing each other The method further comprises at least the step of placing concrete in the space of the plate and filling it.

[0008]

According to the present invention, the PC plates are arranged on both sides of the pre-assembled steel frame structure, and the walls are formed by placing concrete using the PC plates as a form. Therefore, the conventional mold building and form dismantling are not required, and at the same time, the complicated bar arrangement is simplified, and the construction period corresponding to those works is shortened. In addition, there is no need for a large number of skilled reinforcing bars as in the past.

Further, since the PC plate is separately manufactured in a factory or a manufacturing yard, the amount of labor on site is leveled, the working environment is improved, and the quality can be secured. The start of equipment installation work will also be accelerated. Further, according to the present invention, the pre-assembled steel frame structure is used as a strength member of the main structure, and the seismic resistance to be borne by the wall is provided between the fixed amount of the reinforcing bars arranged in the PC plate and the bracing material of the steel frame structure. Both sides bear the burden. for that reason,
Materials are effectively used. Moreover, it is possible to use the reinforcing bars having the same diameter as the reinforcing bars of the wall body, which is a steel-framed reinforced concrete structure, regardless of the wall thickness, so that the working efficiency of the PC plate production can be improved.

According to the present invention, the adjoining PC plates are connected to each other by a lap joint method in which reinforcing bars corresponding to lap joints of horizontal or vertical bars are arranged inside the PC plates. Alternatively, a sleeve joint is used to mechanically connect the horizontal stripes or the vertical stripes of the adjacent PC plates. As a result, the accuracy control of the position of the reinforcing bar becomes easy, high-quality reinforcing bar work can be performed even by an unskilled reinforcing bar worker, and the amount of work on site is reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of constructing a wall type SRC structure of the present invention will be described below with reference to the drawings, taking the case of constructing an earthquake resistant wall of a reactor building as an example. FIG. 1 is a plan view of an earthquake-resistant frame structure of a building according to an embodiment of the present invention, and FIG. 2 is a coaxial assembly drawing. In the figure, reference numeral 1 denotes a building having a wall type SRC structure having a frame 5 of a frame composed of an H-shaped steel column 2, a steel beam 3, and a steel bracing (braces) 4, and an opening 6 at a predetermined position. Has been formed. The wall-type SRC structure is a half-PC wall structure in which PC plates 10 are arranged on both sides of a frame structure 5 which is a pre-assembled steel frame structure, and concrete is placed using this as a formwork. 3 to 5 are layout views of the PC plate 10 in the wall type SRC structure, FIG. 3 is a plan view, FIG. 4 is an inner elevation view, and FIG. 5 is an outer elevation view. In the case of this embodiment, a PC plate 1 with two walls on each side is provided for each square-shaped section divided by a steel frame column 2 and a steel beam 3 of a frame structure 5 into squares.
0 is assigned, and each adjacent PC on the top, bottom, left and right
The plate 10 is integrally arranged via a joint portion (joint portion) 10J.

FIG. 6 shows a part (1) of the PC wall structure of the building 1.
In the cross section along line VI-VI of FIG. 3 showing (to the third floor), the lowermost steel column 2 is an anchor bolt in which a base plate 2a fixedly attached to the column bottom is embedded in a foundation mat 11 as a foundation plate. It is erected tightly on the twelve. A steel frame beam 3 and a steel frame brace 4 are fixed to each floor of the steel frame column 2 to form a frame structure 5. An outer PC plate 10a is arranged on the outer side and an inner PC plate 10b is arranged on the inner side so as to face each other with the steel column 2 interposed therebetween, and an internal pouring concrete 15 is filled in-situ between the PC plates 10a and 10b. There is. Further, the floor 16 is constructed by casting concrete on site using the deck plate supported by each steel beam 3 and the PC wall as a formwork.

The procedure for constructing the PC wall structure shown in FIG. 6 will be described below with reference to the flow chart of FIG. FIG. 7 (a)
Represents the construction procedure of the lowermost layer, and FIG. 7B represents the construction procedure of the general layer which is the uppermost layer. The construction of the lowermost PC wall is started after the construction of the lower part of the foundation and the middle part of the foundation mat 11 is completed.

That is, first, as shown in FIG. 8, after arranging the bottom end reinforcement 20a of the foundation, the lower concrete of the foundation mat 11 is cast to the foundation joint surface 11a in the middle of the foundation to form the lower half of the foundation mat 11. At this time, the basic connecting surface 1
Anchor bolt 12 is embedded so that the head is exposed above 1a. PC wall construction starts from this state. Step 1 (S1): The lowermost steel frame erection.

The base plate 2a is fixed to the embedded anchor bolts 12, and the frame 5 of the frame composed of the lowermost steel column 2 and the steel brace 4 is erected at predetermined positions. Step 2 (S2): Reinforcement of foundation upper end reinforcement and reinforcement of wall joint reinforcement and foundation upper concrete placement. Subsequently, a foundation upper end streak 20b is arranged on the upper part of the foundation mat member 11 above the foundation joining surface 11a, and subsequently, a longitudinal stirrup joint streak 21a of the wall PC plate.
Alternatively, 21b is arranged. After that, the foundation upper concrete is cast, and the lower portion of the steel frame column 2 is embedded and fixed in the concrete of the foundation mat 11 together with the base plate 2a.

It should be noted that the reinforcing joint joint 21 for firmly connecting the foundation and the PC wall to the foundation upper concrete of the foundation mat 11 has the lap joint system of FIG. 8 (a) and FIG. 8 (b). ) There are two types of splice sleeve joint methods, and either method may be used. In the former method,
The long lap joint streak 21a is set upright so as to be located between the steel column 2 and the steel brace 4 and the PC plate 10. On the other hand, if the latter method is used, the relatively short joint bar 21
b is set upright so as to be located directly below the vertical stripe 22a inside the PC plate 10.

Step 3 (S3): Reinforcing bar set and PC version installation. Around the opening 6 on the wall,
The reinforcing oblique bar (not shown) is arranged. In addition, around the opening portion of the PC plate, vertical and horizontal reinforcing bars are arranged in advance. In addition, the reinforcing bars of the joint portions 10J of the PC plates that are laterally adjacent are arranged. For example, as shown in FIG. 9 (a), at a location corresponding to the joint portion 10J of two PC plates that are adjacent to each other in the horizontal direction with a gap 55, the vertical direction is applied to the inner surface of the PC plate so as to straddle the gap 55. Reinforcing lap joint bar 5 composed of the bar 57a and the lateral bar 57b
7 is arranged.

Further, the joint portion 10J at the wall crossing portion is reinforced. This part, as shown in FIG. 10, is a cast-in-place concrete 15 between the facing inner and outer PC plates 10.
The vertical stripes 60a and the horizontal stripes 60b so as to straddle the filling space of
Reinforcing bar 60 consisting of is arranged on the inner surface side of PC plate 10 in a cross girder to reinforce. In this way, after the reinforcement bars have been arranged at the required reinforcement points, the PC plate 10 is then built on the upper surface of the base mat 11. That is, the outer PC plate 10a is erected on the outer side while sandwiching the steel column 2, the steel frame brace 4 and the joint bar 21 which are erected upright, and the inner PC plate 10b is erected on the inner side.

At this time, in the case of the lap joint method of FIG. 8 (a), the mortar block 23 for PC plate setting is placed between the lower ends of the PC plates 10a and 10b and the upper surface of the base mat 11. Insert two points for each PC version. Then, one surface of the angle member 24, which is an L-shaped fixing metal member, is fixed by the bolt 25 embedded in the upper surface of the base mat 11, and the other surface of the angle member 24 is fixed to the corner reinforcing member 26 of each lower end surface of the PC plate. Weld to and fix. Through the mortar block 23 fixed in this way, PC
The lower part of the plate 10 is fixed to the base mat 11.

On the other hand, in the case of the splice sleeve joint system of FIG. 8B, the lower end of the vertical streak 22a is projected from the lower end of the PC plate 10, and the vertical streak 22a and the base mat 1 are formed.
The splice sleeve joint 27 is used to connect the joint streak 21b erected at No. 1 with the splice sleeve joint 27. A concrete block 28 (two points for each PC plate) is interposed for level adjustment of the PC plate, and an L-form frame iron plate 29 is bolted to the lower end of the PC plate 10 and the upper surface of the foundation mat 11. Top of PC version 1
Formed by welding and fixing it to the corner reinforcing member 26 at the lower end of 0. Next, grout mortar M is poured into the splice sleeve joint 27, and after the cast-in-place concrete 15 is hardened, the L-form form iron plate 29 is removed.

In this case, the joint bar 21 and the steel column 2,
A separator 30 is attached to the lower portions of the outer PC plate 10a and the inner PC plate 10b which are erected while sandwiching the steel brace 4, and the outer PC plate 10a has a predetermined gap, that is, a predetermined wall thickness from the outer PC plate 10a. And the inner PC plate 10b is held at a distance less the thickness. In addition, each PC version 10
A large number of concave cotters 31 are formed in advance on the opposing surfaces of a and 10b at predetermined intervals in order to strengthen the joint with the concrete cast in situ.

The upper parts of the outer PC plate 10a and the inner PC plate 10b, the lower parts of which are fixed by the angle member 24 of the fixed metal fitting, are shown in FIG.
As shown in FIG. 1, a PC plate upper steady rest hardware 41 as a fixture hardware attached to the steel beam 3 is connected and fixed to prevent steady. After fixing the top and bottom of each PC plate respectively,
The connecting portions (joint portions) 10J of the PC plates 10 adjacent to each other on the left and right are joined by joints. FIG. 9 shows the joining method at the lateral joint portion 10J of the PC plate 10.
It is shown in FIG.

FIG. 9 (a) shows a case of a transverse lap joint method, in which the end faces of the PC plate 10 reinforced by the corner reinforcing member 26 are made to be adjacent to each other via a gap 55, and both P
Put the iron plate form 56 on the outer surface of the C plate 10, 10 and bolt 2
Connect by fixing at 5. Both PC version 1
The lap joint horizontal bar 57 described above is arranged on the inner surface side of 0 and 10. (In the next step, in-situ concrete is poured into the opposing spaces of the outer PC plates 10 connected in this manner to fill the gap 55, and the iron plate form 56 is removed after hardening.) FIG. This is a case of the mechanical joint system, and the PC is reinforced by the corner reinforcing material 26 as described above.
Make the end faces of the plate 10 adjacent to each other through a gap 55,
An iron plate frame 56 is applied to the outer surfaces of both the PC plates 10 and 10 and fixed with bolts 25. Then, the horizontal ribs 22b of each PC plate 10 are preliminarily projected laterally from the end surface, and the projected horizontal ribs 22b are connected to each other by the splice sleeve joint 58 in the gap 55. After that, grout mortar M is injected into the gap 55 and cured. The iron plate form 56 is removed after the next step of in-place concrete hardening.

Step 4 (S4): Concrete placing inside the lowermost wall. Outside P standing on the upper surface of the base mat 11
Concrete is cast by casting in the space between the C plate 10a and the inner PC plate 10b (the steel column 2, the steel brace 4 and the joint bar 21 are interposed). By this concrete pouring, the wall space between the inner and outer PC plates 10a and 10b is filled, and the foundation mat 11, the wall, and the reinforcing rebars of the frame structure 5 are integrally joined.

Step 5 (S5): Construction of the floor portion. afterwards,
The floor 16 on the second floor is constructed. That is, as shown in FIG. 11, the length (height) of the outer PC plate 10a is longer than that of the inner PC plate 10b by the thickness of the floor portion 16, and the outer P
The floor 16 on the second floor, which is an intermediate layer, is installed between the upper end of the C plate 10a and the upper end of the inner PC plate 10b. The floor 16 and the wall are stored as shown in FIG. 11, and the deck plate 42 is supported by the deck receiving beam girder steel 47 on the lowermost surface of the floor, and the steel beam 3 is above the steel beam 2. It is supported and suspended. The deck receiving cross beam steel frame 47 is conventionally used merely as a temporary frame for temporarily supporting the deck plate 42.
In the case of the present invention, it is used as a permanent structural material and also exerts the function of maintaining the strength of the structure.

Further, a floor slab lower end bar 43 is arranged as a slab bar with a 90 ° hook 44 at the end, and the hook 44 is anchored in the wall of the lower layer. In addition, as the slab muscle, the upper slab 45 for the floor slab also has a 90 ° hook 46 at the end.
Anchored in the wall. The upper half of the lap joint vertical bar 50 in which the lower half is embedded in the slab of the floor 16 as a reinforcing bar for the vertical joint portion 10J of the outer PC plate 10a is the outer PC plate of the upper layer (second floor). It is arranged so as to project upward from the upper surface of the floor 16 so as to overlap with 10a.

On the other hand, a lap joint vertical bar 51 is vertically pierced through the slab of the floor 16 as a reinforcing bar for the longitudinal joint portion 10J of the inner PC plate 10b so as to project vertically. After that, in-situ concrete is applied to the floor portion 16, and after curing, the first floor portion is completely completed. Step 1 above
~ When the construction of the first floor and the construction of the second floor 16 are completed through step 5, the construction of the general layer, which is the upper layer, is completed.
It is performed according to the procedure shown in (b). The contents of the upper wall construction procedure will be described below.

Step 6 (S6): Steel frame erection. The upper steel column 2 and the steel brace 4 are erected by welding to the joint portion 2J of the lower steel column 2 (which is above the upper surface of the floor 16; see FIG. 6). Step 7 (S7): Reinforcement bar setting and PC version installation. Reinforcing vertical joint bars 50, 5 for firmly connecting the upper and lower PC walls to the concrete of the second floor 16
1 is placed upright in step 5 as described above.

That is, the outer lap joint bar 50 that reinforces the joint portions 10J in the upper and lower layers of the outer PC plate 10a has the lower half portion embedded in the slab of the floor portion 16 as described above. On the other hand, the upper and lower joints 1 of the inner PC plate 10b
The inner lap joint reinforcement 51 for reinforcing 0J is erected vertically through the floor 16 as described above. Wall opening 6
Steps in the lowest layer construction procedure described above are the reinforcement bar arrangement of the corresponding portion, the reinforcement bar arrangement of the joint portion 10J of the PC plate laterally adjacent to each other, and the reinforcement bar arrangement of the joint portion 10J of the wall crossing portion. It is performed in the same manner as in the case of 3.

After the reinforcement bars have been arranged at the required reinforcement points, the upper PC plate 10 is built on the upper surface of the floor 16. That is, the outer PC slab 10a is erected outside through the level adjusting mortar block 23 while sandwiching the steel column 2, the steel brace 4 and the joint bar 21 that are erected upright, and the inner PC slab 10b is inside. Similarly, it is erected via the mortar block 23.

At this time, the inner PC plate 10b is shown in FIG.
Similar to the case shown in (a), one surface of the angle member 24, which is an L-shaped fixing hardware, is fixed by the bolt 25 embedded in the plate of the second floor 16 and the other surface is corner-reinforced at the lower end surface of the PC plate. It is welded to the material 26 and fixed on the mortar block 23.
On the other hand, the joint portion 10J of the outer PC plate 10a
The reinforcing iron plates 52 are applied to the outer surfaces of the upper and lower outer PC plates 10a, which are stacked with the mortar block 23 interposed therebetween, and are welded and connected to the corner reinforcing members 26 on each end surface.

In this way, the outer PC plate 1 erected upright with the joint ribs 21, the steel columns 2 and the steel braces 4 interposed therebetween.
0a and the inner PC plate 10b have a separator 30 at the bottom.
And hold them at the specified intervals. Standing outside P
The upper parts of the C plate 10a and the inner PC plate 10b are connected and fixed by the PC plate upper anti-slip hardware 41 (FIG. 11) as in the case of the first floor.

Further, in the same manner as in the procedure for constructing the first floor portion, the lateral joint joint (see FIG. 9) of the adjacent PC plate joint portion on the second floor portion is constructed. Step 8 (S8): Placing concrete inside the upper wall.
After that, the outer PC plate 10a standing on the plate surface of the floor 16
The space between the inner PC plate 10b and the inner side of the PC plate 10b (the steel column 2, the steel brace 4 and the joint bar 21 are interposed) is filled with concrete by casting in situ.

Step 9 (S9): Construction of the floor. afterwards,
Further, the construction of the floor portion 16 of the upper layer is performed in the same manner as in the case of step 5 in the procedure for constructing the lowermost layer described above. In this way, the wall type SRC structure is constructed while sequentially moving to the upper layer portion. According to the present embodiment, by using the pre-assembled steel frame structure 5 as the main construction material, and by placing the concrete on site with the PC plate 10 sandwiching this as the formwork, the inside and outside of the construction is The PC plates 10a and 10b and the frame structure 5 are integrally fixed with filled concrete to form a wall. Therefore, the pre-assembled steel aggregate can be effectively used as a strength member for permanent installation, and the work of building the formwork and dismantling the formwork in the conventional wall construction method is not required, and the effect of material saving and shortening the construction period can be obtained. To be

At the same time, the PC plate 10 also becomes a permanent structural member, and the vertical ribs 22a and the horizontal ribs 22b in the PC plate 10 cooperate with the frame structure 5 to share the seismic force that the wall should bear. Since it is involved in securing strength, the amount of rebar of the SRC wall structure can be made constant, and rebars of the same diameter can be used regardless of the type of wall thickness, and complicated bar arrangement can be simplified. Even without it, the work of arranging can be done efficiently and the labor can be saved. At the same time, the effect that the deterioration of the work environment due to the temporary placement of the formwork-related materials and the reinforcing bars and the work congestion is improved can be obtained.

Further, for connecting the adjacent PC plates 10 to each other, the vertical reinforcing bars 50 and 51 and the horizontal reinforcing bars 5 corresponding to the lap joints are connected.
Since 7 and 60 are arranged to transmit the stress,
This makes it easy to control the accuracy of the position of the reinforcing bars and has the effect of significantly reducing the amount of work on site. In addition, although the said Example demonstrated the wall construction method of the building of a nuclear power-related facility, it is not restricted to this but can be applied also to other structures.

[0037]

As described above, the wall type SR of the present invention
According to the construction method of the C structure, the PC plate in which the vertical and horizontal stripes are embedded in advance is fixed at a certain distance (wall thickness) so as to sandwich the brace surface of the frame composed of steel columns, beams and braces. It will be installed at a distance), the upper part will be fixed to the beam and the lower part will be fixed to the reinforced concrete floor or foundation plate. After that, PCs adjacent to each other
After reinforced reinforcing bars were arranged at the connecting portions of the plates, concrete was filled in the space between the PC plates facing each other so as to be integrally constructed. For this reason, the work period for setting up the formwork and dismantling the formwork is shortened, and by separately manufacturing the PC version in the factory or production yard, labor on site can be leveled, which shortens the work period, saves labor, and improves quality. The effect is that it is possible to secure.

Further, by utilizing the pre-assembled steel frame structure for strengthening the seismic resistance, it is possible to obtain the effect that the amount of the reinforcing bars of the wall body can be made constant regardless of the size of the wall thickness and the efficiency of the PC plate production is improved. In addition, the joints between adjacent PC plates can connect the horizontal or vertical bars by a lap joint method or a mechanical joint method, which makes it easier to control the accuracy of the reinforcing bar position, and makes it possible to improve the accuracy even if not a skilled reinforcer. It is possible to obtain an effect that the work of bar arrangement of quality is possible and the amount of work on site is reduced.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a wall type structure according to an embodiment of the present invention.

FIG. 2 is an elevation view of the frame structure shown in the section taken along the line II-II of FIG.

FIG. 3 is a plan view showing the PC plate allocation of the one shown in FIG.

FIG. 4 is an inside elevational view of FIG.

5 is an outer elevation view of FIG.

6 is a sectional view of the PC wall structure shown in the sectional view taken along line VI-VI of FIG.

FIG. 7 is a flow chart showing the procedure of the method for constructing a wall-type structure of the present invention, where (a) is the lowest layer construction procedure and (b) is the general layer construction procedure.

FIG. 8 is a cross-sectional view showing the connection between the foundation and the PC wall in the wall-type structure of the present invention, (a) is a lap joint system,
(B) is a splice sleeve joint system.

FIG. 9 is a cross-sectional view of a transverse joint structure between adjacent PC plates, in which (a) is a lap joint and (b) is a mechanical joint.

10 is an enlarged cross-sectional view of an X portion (wall crossing portion) of FIG.

FIG. 11 is a cross-sectional view showing the floor and wall of the general floor in the wall type structure of the present invention.

[Explanation of symbols]

 2 Steel column 3 Steel beam 4 Steel brace 5 (framework) Frame 10 PC version 11 Foundation version (foundation mat) 16 Floor 21 Reinforcing rebar (joint bar) 24 Fixing hardware (angle material) 50 Reinforcing bar 51 Reinforcing bar 57 Reinforcing bar (joint bar) 60 Reinforcing bar

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Joji Kodama 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Corporation

Claims (1)

[Claims] 1. A process of constructing a frame composed of steel columns, beams and braces on a reinforced concrete floor or foundation plate,
Precast concrete slabs (PC slabs) with vertical and horizontal reinforcements embedded in the factory or production yard in advance are built at intervals corresponding to the wall thickness sandwiching the brace structure surface of the frame, and the upper part is attached to the beam. Fixing through the fixing hardware and fixing the lower part with the fixing hardware attached to the reinforced concrete floor or foundation plate, and the adjacent P
A wall type S comprising at least a step of arranging a reinforcing bar at a connecting portion of the C plate and a step of pouring and filling concrete in a space between the PC plates facing each other.
Construction method of RC structure.