JPS62228543A - Post-cast wall structure of the open black part of the wall in the reactor building - 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 wall structure for later closing a wall opening in a nuclear reactor building.

(Problems to be Solved by the Invention) An opening is formed in the wall that constitutes the reactor building for carrying in equipment, but it is necessary to close this opening after carrying in the equipment. The current construction method for pouring walls consists of connecting the reinforcing bars that protrude around the opening with connecting reinforcing bars, attaching formwork to both sides of the opening, and pouring concrete. This is because the tension in the post-cast walls of the opening is borne by the reinforcing bars, which increases the number of reinforcing bar joints and takes time to remove the formwork. will be prolonged.

This invention was made with the aim of solving the problems associated with the construction of conventional post-cast walls, and aims to streamline construction by making the post-cast walls have a structure in which the tension is borne by the steel plate. be.

(Another means to solve the problem) In the present invention, the post-cast walls of the opening are made of steel plate concrete structure, and the tensile stress is borne by the steel plate, thereby eliminating the complicated reinforcement and joint work, and making the construction work easier. rationalization,
We will also aim to shorten the construction period.

The steel plates also serve as formwork for the post-cast walls, and force is transmitted from the reinforcing bars of the existing wall through the plates that are fixed to the anchors.

The anchor is embedded in the wall surrounding the opening in advance, and the plate is fixed to this anchor. Furthermore, a steel plate is attached to the side surface of the opening by joining to the plate. As a result, force is transmitted from the wall to the steel plate via the anchor and plate.

Concrete is then filled between the steel plates, and the concrete bears the burden of compression for the later poured walls.

(Example) The present invention will be described below based on drawings showing embodiments.

The post-cast wall A structure of the present invention, as shown in FIG.
It is constructed of steel plate concrete.

An anchor 2 is embedded in advance in the wall 1 around the opening a, a plate 3 for transmitting stress is fixed to the anchor 2, and a steel plate 4.4 is further joined to the plate 3.

Steel plates 4, 4 are attached to wall positions on both sides of the opening a, and concrete 5 is filled between the drawing boards 4, 4.

The steel plate concrete post-cast wall A thus formed has anchors 2. It is integrated with the wall 1 by the plate 3.

A lip plate 6, stud bolts, etc. are connected to the inside of the steel plate 4 in order to obtain an adhesion effect with the concrete 5.

The embodiment shown in FIG. 2 is a case where an anchor bolt 2-1 is used as the anchor 2.

The plate 3 has anchor bolts 2- protruding from the end surface of the wall 1.
1 and is fixed by tightening the nut 7.

Then, steel plates 4, 4 are joined to the plate 3, and concrete 5 is filled inside to form a post-cast wall A.

The embodiment shown in FIG. 3 uses a threaded reinforcing bar 2-2, and the steel plates 4, 4 are joined to the plate 3 fixed to the threaded reinforcing bar 2-2 in the same manner as in the above example.

FIG. 4 shows an embodiment in which a stud bolt 2-3 is used as the anchor 2.

In this case, the plate 3 connected to the stud bolt 2-3
will also serve as a formwork when constructing the wall 1, and steel plates 4, 4 are joined to the bent portions of this plate 3. steel plate 4
The force from the wall 1 is transmitted through the 2-3° plate 3.

(Effects of the Invention) This invention has a structure in which the tensile stress of the post-cast walls is borne by the steel plate, which eliminates the need for complicated reinforcing and jointing, and greatly simplifies on-site work. Additionally, since the steel plate also serves as the formwork for concrete pouring, there is no need for demolding or curing, which can significantly shorten the construction period.

[Brief explanation of drawings]

FIG. 1 shows an outline of the present invention, in which symbol 1 is a front view of the opening, and symbol 2 is a sectional view. FIGS. 2 to 4 are cross-sectional views showing embodiments of the present invention. A: Post-cast wall, 1: Wall body, a: Opening 2: Anchor, 2-1 = Anchor bolt 2-2: Threaded reinforcing bar, 2-3: Stud bolt 3 nibrate, 4: Steel plate 5: Concrete, 6: Rib plate 7: Natsuto. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) A plate is fixed to the anchor by contacting the end face of the wall around the opening formed by embedding the anchor in the surrounding wall, and a steel plate is placed on the wall on both sides of the opening to secure the plate. A post-cast wall structure for wall openings in nuclear reactor buildings that consists of joining steel plates and pouring concrete between the two steel plates.