JPS62156461A - Construction of concrete building wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for constructing concrete building walls for nuclear power plants, etc., and particularly relates to a method for constructing concrete building walls that allows the building walls to be easily constructed. be.

[Prior Art] In nuclear power plant buildings, etc., thick concrete building walls are constructed and the reinforcing bars are thick in diameter in order to provide radiation shielding effects.

Conventionally, in the construction of this concrete building wall, as shown in Figure 3, reinforcing bars a are arranged vertically and horizontally in the area where the wall is to be constructed, and then
After constructing formworks on both sides, concrete C is poured into the formworks, and then the formworks are removed to form concrete building walls.

[Problems to be solved by the invention] However, as mentioned above, if the thickness of the building wall is large and the reinforcing bars a are thick, the weight of the reinforcing bars also increases, and a crane or the like must be used for reinforcing work. In addition, the work becomes more difficult, and the frame must have the strength to support the concrete ff1ffi of that thickness, and the work to remove the formwork after concrete pouring becomes necessary, which lengthens the construction period and increases the cost. There is also the problem that costs tend to increase.

[Object of the Invention] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a construction method for a concrete building wall that can easily construct a concrete building wall in a short period of time.

[Summary of the invention] In order to achieve the above object, the present invention molds a large number of reinforced concrete plates having unevenness on the negative side and connection parts on the sides, and Two reinforced concrete plates are placed at a predetermined distance apart with their uneven parts facing each other, and other reinforced concrete plates are sequentially connected to the reinforced concrete plates on both sides in the plane direction to form a formwork, and concrete is poured into the formwork. Concrete building walls are constructed by pouring concrete. Reinforced concrete plates are formed in advance at a factory, etc., and the reinforced concrete plates are successively connected at the construction site to form a formwork, and concrete is poured into it. This eliminates the need for the work of arranging reinforcing bars as required in the past, and since the concrete and reinforced concrete plates are integrated into the concrete building wall, there is no need to remove formwork as in the past, thereby shortening the construction period. It has been made possible.

[Example] Hereinafter, a preferred example of the method for constructing a concrete building wall according to the present invention will be described based on the accompanying drawings.

In FIG. 1, 1 is a reinforced concrete board such as a PC board that becomes the formwork 2.

The reinforced concrete plate 1 is formed in advance to a certain size, and as shown in the figure, a large number of reinforcing bars 3 are buried vertically and horizontally, and the - side 1b
A large number of depressions 4 are formed on the surface, the surface thereof is made uneven, and each side portion 5 thereof has a connecting portion 6 so that connection can be made sequentially in the surface direction.

This connecting part 6 may be any type as long as it can prevent the poured concrete 7 from leaking out when the reinforced concrete plates 1 are joined, and can connect the reinforcing bars 3 of both reinforced concrete plates 1. The reinforcing bar 3 is exposed from V, and the side 5 is exposed on the surface 1a opposite to the surface of the recess 4.
A connecting portion 6 is formed by providing an edge 8 extending from the edge 8 when joining the reinforced concrete plates 1 as shown in FIG.
The reinforced concrete plates 1 can be connected in the planar direction by stacking the reinforcing bars 3 together and binding the reinforcing bars 3 with wires 9 or by welding them together.

In order to connect concrete building walls with this reinforced concrete board 1, first, two reinforced concrete boards 1 are installed so that their recessed sides 40 face each other and are spaced apart by a predetermined distance mi, and the connecting parts 6 of the reinforced concrete boards 1 are used to connect the two reinforced concrete boards 1 one after another. The formwork 2 is formed by connecting in the plane direction.

Next, concrete 7 is poured into the formwork 2 to construct the building wall.

The concrete 7 enters into the recesses 4 and the grooves between the edges 8 of the reinforced concrete plate 1, and a building wall integrally joined to the reinforced concrete plate 1 is constructed.

In this building wall, the reinforced concrete plate 1 is used as the formwork 2, and the formwork 2 is used as the building wall, so there is no need to remove the formwork as in the past, and the reinforcing bars 3 are buried in the reinforced concrete plate 1. This eliminates the need for reinforcement work as in the past, making work at the construction site easier and shortening the construction period.

[Effects of the Invention 1] As is clear from the above detailed description, the present invention provides the following excellent effects.

(1) Since reinforced concrete plates are used as formwork and the building walls are constructed along with the formwork, the construction period can be shortened.

(2) By connecting reinforced concrete plates in the plane direction, formwork formation and reinforcing work can be done at the same time.
Good efficiency.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the concrete building wall construction method of the present invention, Fig. 2 is a sectional view of the concrete building wall similar to Fig. 1, and Fig. 3 is a diagram showing a conventional example. It is. In the diagram, 1 is reinforced concrete, 2 is formwork, 3 is reinforcing steel, 4
6 is the connection part, and 7 is the concrete. Patent applicant Nobuo Kinuya, patent attorney for Ishikawajima-Harima Heavy Industries Co., Ltd. Figure 1 5゛°' Office 4...〈1゛°H Figure 2

Claims (1)

[Claims] A large number of reinforced concrete plates with unevenness on one side and connecting parts on the sides are molded, and two of the reinforced concrete plates are placed so that the uneven parts face each other and are spaced a predetermined distance apart, and the reinforced concrete plates on both sides are placed. Then, connect other reinforced concrete plates sequentially in the surface direction to form a formwork,
A construction method for a concrete building wall, which comprises constructing a concrete building wall by pouring concrete into the formwork.