JPS6328189B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention is a method for constructing a building comprising a precast reinforced concrete plate as a windbreak wall that can be constructed under strong winds, and a cast-in-place reinforced concrete wall integrated inside the precast reinforced concrete plate. It is related to.

When constructing a building or other structure in a place where strong winds blow, such as on the coast, there is a problem that construction may become impossible due to the strong wind and the process is delayed. Furthermore, in the case of rainy weather, the danger of the work will further increase.

This invention was made to solve the above-mentioned problems, and it uses precast reinforced concrete plates as windbreak walls to facilitate the construction of building frames in strong winds. It is used as a surface waste form to save labor, reduce construction costs, and shorten the construction period.

The present invention will be described below based on illustrated embodiments.

Figure 1 shows an outline of the construction process. Precast reinforced concrete plates 1 are attached to the outside of the steel frame of the building to be constructed for several floors, and these are used as windbreak walls.
Construction of the building frame will be carried out inside this windbreak wall, and will proceed unaffected by strong winds.

Additionally, a temporary roof 5 is constructed over the top of the top floor of the steel frame, and this serves as a rain cover to enable all-weather construction. This temporary roof 5 can also save labor in construction by using panels in which even the roof finishing material is made into a unit. The temporary roof 5 is installed on the top of the steel frame using a lifting machine.

Figures 2 and 3 show a cross-sectional view and a cross-sectional view thereof of a building according to the present invention, in which the precast reinforced concrete plate 1, which has been pre-attached several floors as described above, is used as an outer wall, and the back side of the precast reinforced concrete plate 1 is Necessary reinforcement is arranged and cast-in-place reinforced concrete 2 is placed as the inner wall. In the figure, reference numeral 3 indicates an H-beam as a steel column, and the precast reinforced concrete plate 1 is fixed to this steel column 3 via a mounting hardware 6. In addition, since the precast reinforced concrete plate 1 is subjected to wind pressure, it is reinforced with reinforcing bars so that it can withstand the force in the direction perpendicular to the wall surface, and furthermore, there are reinforcing bars protruding from the back side to integrate with the inner wall made of cast-in-place reinforced concrete 2. . As such a precast reinforced concrete board 1, a precast board with embedded reinforcing steel truss as shown in the figure is suitable, and the surface side can be used as a finishing material as it is, and can also be used as a waste form for the outer wall surface of a building. .

4 to 43 show various methods for attaching the precast reinforced concrete plate 1 to the steel frame, and each method will be explained below.

(1) Method 1 As shown in Figures 4 to 10, bolts 7 are embedded in the ends of the precast reinforced concrete plate 1, and fixed with nuts to the plates at the ends of the mounting hardware 6 provided on the H-shaped steel. It's a method. 7th
As shown in the figure or FIG. 10, in order to fix the upper precast reinforced concrete plate 1, a guide groove is provided from the upper end of the plate.

(2) Second method As shown in Figures 11 to 18, a mounting piece 8 with an L-shaped cross section is embedded in the back of the end of the precast reinforced concrete plate 1 in advance to fix it. This is a method of joining with bolts with a T-shaped steel 9 in between.

(3) Third method As shown in Figures 19 to 29, small H-beams 10 fixed to steel columns 3 at predetermined intervals are connected vertically, and precast reinforced concrete plates 1 are placed in the recesses between the flanges. The method is to fit the

As shown in FIGS. 27 to 29, the lifted precast reinforced concrete board 1 is erected using the recessed portion as a guide.

(4) Fourth method As shown in Figures 30 to 35, the web part of the mounting piece 11 with a T-shaped cross section is fixed with bolts to the steel material attached to the steel column 3, and embedded in the end of the precast reinforced concrete plate 1 in advance. In this method, a bolt is passed through a bolt insertion hole provided in the flange portion of the mounting piece 11 and fixed with a nut.

(5) Fifth method The T-beams 12 fixed at a predetermined distance from the steel columns 3 are continuous in the vertical direction, and the precast reinforced concrete plates 1 are fixed to each other using the holding plates 13 at the ends of the precast reinforced concrete plates 1. This is the way to do it.

This invention has the above-mentioned configuration, and the building frame is constructed with precast reinforced concrete plates serving as windbreak walls being attached to the outside of the steel frame several stories in advance, making construction easy in strong winds. In addition, the precast reinforced concrete board is integrated with the cast-in-place reinforced concrete as the inner wall through protruding reinforcing bars to form the outer wall, and as a waste form that also serves as the surface material, it can save labor, reduce construction costs, shorten the construction period, etc. By placing a temporary roof on the top floor of the reinforced steel bars, we were able to eliminate the risk of work without having to stop work in the event of rain or snow.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and the first
The figure is a perspective view showing an outline of construction, Figure 2 is a cross-sectional view of a composite external wall according to the present invention, Figure 3 is a cross-sectional view of Figure 2, and Figures 4 to 43 are steel frames of precast reinforced concrete plates. Fig. 4 is a perspective view, Fig. 5, Fig. 8 is a perspective view, and Fig.
Figures, Figure 11, Figure 15, Figure 19, Figure 23,
30, 33 and 36 are longitudinal sectional views,
6 is a sectional view taken along line a-a in FIG. 5, FIG. 7 is a sectional view taken along line bb in FIG. 12 and 13 are the dd and ee sectional views of FIG. 11, respectively, and FIG. 14 is the f of FIG. 12.
-f sectional view, Figures 16 and 17 are d'-d' and e'-e' sectional views in Figure 15, and Figure 18 is f'-f' sectional view in Figure 16, and Figure 20 is a front view, Figure 21 is a plan view of main parts, and Figure 22 is g-g in Figure 21.
Fig. 24 is a front view, Fig. 25 is a plan view of main parts, Fig. 26 is a g'-g' sectional view of Fig. 25, and Fig. 24 is a front view.
Figures 7 to 29 are front views showing the construction procedure, Figure 31
The figure is a sectional view taken along line hh in Fig. 30, and Fig. 32 is a sectional view taken along line hh in Fig. 30.
ii sectional view in the figure, Figure 34 is h'--h' in Figure 33.
h' sectional view, Figure 35 is i'-i' sectional view of Figure 34,
Figures 37, 39, and 41 are respectively 36
Enlarged views of parts A, B, and C in the figure, Figure 38, and Figure 4.
Figure 0 and Figure 42 are Figures 37 and 39, respectively.
The j-j cross-sectional view, the k-k cross-sectional view, and the l-l cross-sectional view in FIG.
FIG. 1... Precast reinforced concrete board, 2...
...Cast-in-place reinforced concrete, 3...Steel column, 4
... Steel beam, 5 ... Temporary roof, 6 ... Mounting hardware,
7... Bolt, 8... Mounting piece, 9... T-shaped steel, 1
0...H-beam steel, 11...Mounting piece, 12...T-beam steel, 13...Holding plate.

Claims (1)

[Claims] 1. Build a steel frame structure composed of steel columns and beams up to a specified floor, and then pre-cast precast reinforced concrete plates as an outer wall with reinforcing bars protruding from the back side to integrate with the inner wall several floors above the steel frame. A temporary roof is placed over the upper surface of the top floor of the steel frame, and a cast-in-place reinforced concrete wall is cast as an inner wall inside the precast reinforced concrete to be integrated with the outer wall. How buildings are constructed.