JPH0463356B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of constructing a wall in a nuclear reactor building, which constructs a wall with a large wall thickness.

[Problem that the invention seeks to solve]

Currently, the construction of the walls of the reactor building is carried out by repeating the steps of assembling wall reinforcing bars and formwork, pouring concrete, and demolding, but this method requires five steps, including scaffolding. In particular, it has the problem of prolonging the construction period because demolding is required.

This invention was made by paying attention to the problems of this conventional method, and attempts to propose a method for shortening the construction period.

[Means for solving problems]

In the present invention, PC plates are placed on both wall sides of the wall,
By using this as a formwork, the effort of demolding is eliminated and the construction period is shortened.

The PC version is manufactured with vertical and horizontal reinforcement embedded, and the ends of both reinforcement bars protrude from the end face.

This PC plate is built at the wall surface position with a distance between the end faces of each PC plate facing in the in-plane direction of the wall, and the vertical reinforcement and horizontal reinforcement are connected at the part separated by this distance. be exposed.

Wall construction is horizontally and vertically adjacent
This is done by connecting the vertical and horizontal reinforcements protruding from the end faces of the PC plates, installing pre-assembled reinforcing bars between the PC plates that face each other in the out-of-plane direction of the wall, and pouring concrete. .

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment.

This invention is a method of constructing wall A of a reactor building by building PC plates 1 and 1 on both wall surfaces of wall A, arranging reinforcement between these PC plates 1 and 1, and pouring concrete 2. It is.

As shown in Fig. 5, the PC version 1 is manufactured by burying vertical reinforcements 1a and horizontal reinforcements 1b, which are wall reinforcements, and the ends of the vertical reinforcements 1a and horizontal reinforcements 1b are used for joints with those of the adjacent PC version 1. It protrudes from the edge of PC version 1.

The construction procedure will be explained with reference to Fig. 1.

First, assemble the scaffolds 3, 3 on both sides of the wall 1 (), erect the PC plates 1, 1 on both sides of the wall A inside the scaffolds, and furthermore pre-assemble the pre-assembled reinforcing bars 4, 4 inside the scaffolds 3, 3. Set().

PC version 1, 1 adjacent horizontally and vertically
are installed with a distance between opposing end faces as shown in FIGS. 2 and 4.

After connecting the horizontal stripes 1b, 1b of this PC version 1, 1,
Concrete 2 is poured between PC plates 1 and 1 facing each other in the wall thickness direction ().

Subsequently, PC plate 1 is built on top of PC plate 1 on which concrete 2 has been poured, vertical reinforcements 1a and 1a are connected, and the above steps are repeated to form wall A.
construction will take place.

As shown in FIG. 2, a plate 12 is installed across the inner sides of the horizontally adjacent PC plates 1, 1 to close the gap between the two PC plates 1, 1. This serves as the formwork for pouring concrete 2 between 1 and 1, and the connection of the horizontal reinforcements 1b and 1b is performed on the outside thereof.

In Fig. 2, horizontal reinforcements 1b, 1b are connected to a channel-type joint metal fitting 5, which is fixed via bolts 7 to the outside of a column steel frame 6 installed at a column position of a wall body A. Therefore, when they are connected to each other, the horizontal strips 1b, 1b are directly connected by the coupler 9.

After the joints of the transverse reinforcements 1b, 1b are completed, a plate 12 is also placed across the outer side surfaces of the PC plates 1, 1 to close them, and the gap in the inner joint portion is filled with mortar 8 or the like.

As shown in Fig. 4, the vertical bars 1a, 1a are connected by lap joints, etc., and after the connection, a plate 12 is placed on the outside that will serve as a formwork when pouring concrete 2, as in the horizontal direction, and the upper and lower PC plates 1 , 1.

In the above embodiments, the horizontal reinforcements 1b, 1b are mechanical joints,
Although the vertical reinforcements 1a, 1a are connected by a lap joint, the method of joining these is not limited to the embodiment, and any method such as welding joint may be selected.

FIG. 6 shows the resistance mechanism of wall A. is the case where the PC plate 1 and the poured concrete 2 parts are not integrated, and when the structure is made to resist external force with the sum of their respective proof strengths, is the PC
This is a case where a shear connector 11 is provided protruding from the inner peripheral surface of the plate 1, and the PC plate 1 and the concrete 2 are integrally resisted by this shear connector 11.

Figures 3 and 5 show how the PC plate 1 is installed in the horizontal and vertical directions, respectively. An embedded metal fitting 10 is attached in advance.

〔Effect of the invention〕

This invention is as described above, and since the PC plate forming part of the wall also serves as the formwork, the steps of assembling the formwork and demolding it are eliminated, and the construction period can be shortened.

In particular, the connection of the vertical and horizontal stripes protruding from the end face of the PC plate can be performed using the space provided between adjacent PC plates, resulting in good workability and high reliability.

In addition, the walls are constructed with multiple reinforcing bars, including reinforcing bars buried within the PC board and reinforcing bars installed on-site, resulting in a wall with high strength.

Additionally, hardware for installing equipment can be embedded in the PC version in advance, streamlining on-site work.

[Brief explanation of the drawing]

Figures 1-- are schematic diagrams showing the construction procedure of the present invention, Figures 2 and 4 are cross-sectional views showing examples of reinforcing bar joints in the horizontal and vertical directions, respectively, and Figures 3 and 5 are Front view, perspective view, and Figure 6 showing how the PC plate is hung in the horizontal and vertical directions, respectively.
, is a sectional view showing an example of the structure of a wall. A... Wall, 1... PC version, 1a... Vertical stripe, 1
b...Horizontal reinforcement, 2...Concrete, 3...Scaffolding,
4... Assembly reinforcing bar, 5... Joint hardware, 6... Column steel frame, 7... Bolt, 8... Mortar, 9... Coupler, 10... Embedded hardware, 11... Shear connector, 12... Plate .

Claims (1)

[Claims] 1 PC boards with vertical and horizontal reinforcements embedded in them are installed at the wall surface position with a distance between the end faces of each PC board facing in the in-plane direction of the wall, and horizontal and vertical Vertical and horizontal strips protruding from the end faces of PC plates adjacent in the direction are connected to each other, and a plate is placed across the end faces of the adjacent PC plates, and a plate is placed between the PC plates facing in the out-of-plane direction of the wall in advance. A method of constructing a wall in a reactor building, in which the assembled reinforcing bars are installed and concrete is poured to construct the wall.