JPH02167937A - Connecting work of steel plate-concrete structure - Google Patents

Abstract

PURPOSE:To save power required as well as raise the efficiency of operation by a method in which large-size blocks are set in order, their crossing points are combined by bolts, floor steel plates are placed on them, and concrete is placed into the blocks and onto the steel plates. CONSTITUTION:A large-size block A1 consisting of steel plates 1 facing each other which serve form panels to be structural parts and has a concrete-placing space B1 inside. The blocks A1 are set in order, the plates 1 on the crossing points are connected with bolts, and floor steel plates 4 are laid on the upper part of the blocks A1. Concrete is then placed into the spaces B1 of the blocks A1 and also onto the floor steel plates 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for joining steel plate concrete structures for constructing buildings of nuclear power generation facilities.

(Prior art and problems to be solved by this invention) The buildings of conventional nuclear power generation facilities mainly have a reinforced concrete structure, and many skilled workers such as reinforcing bar workers and carpenters are required, and moreover, they have to assemble the reinforcing bars.

It is difficult to shorten the construction period because it requires the installation of embedded hardware, erection of formwork, concrete pouring, and dismantling of formwork. In addition, a steel plate concrete structure has been used in some parts, but the joints are welded. By the way, welding joints require many welders, on-site welding equipment for inspection of welded parts, and jigs for preventing and correcting distortion caused by welding.

This invention was developed in order to solve the above-mentioned problems, and is designed to form a large block made of steel plates, and to enable bolt connections mainly inside the block.

[Means to solve the problem]

The first invention is to form a large block with an internal space for concrete pouring using opposing steel plates that serve as a formwork that also serves as a structural material, and to erect the large blocks one after another.
At the intersection of the large blocks, the steel plates are internally bolted together, a floor steel plate is spanned over the upper part of each large block, and concrete is poured in the concrete placement space of each large block and on the floor steel plate. The second invention is a joining method for steel plate concrete structures, and the second invention forms a large room block with four wall steel plates that serve as a formwork that also serves as a structural material, and a floor steel plate extending above. A plurality of room blocks are built next to each other with a concrete pouring space in between, and the steel plates are internally bolted together at the joints of the large room blocks, and concrete is poured in the concrete pouring space and on the floor steel plate. This is a method of joining steel plate concrete structures to be poured, and large blocks are formed using steel plate forms that also serve as structural materials.
The large blocks are internally bolted together, and the joint is made by pouring concrete inside the large blocks and onto the steel floor plates.

[Example 1] The large block A1 is formed into an elongated rectangular frame shape when viewed from above by opposing steel plates 1.1 which serve as a formwork that also serves as a structural material. A plate 2 is arranged and has a concrete placement space Bl inside.

The large blocks AI are built one after another in a lattice pattern, and the steels vi, l, and 1 are bolted 3 to each other within the large block Al at the intersection C that becomes the column of the large block AI. The bolt connection mode when the large block Al has a large wall thickness and a worker can enter is as shown in Figure 4 I to ■. The manner of bolt connection when the worker inserts the part C1, that is, into the pillow shape, is as shown in FIGS.

Next, a floor steel plate 4 serving as a structural member or a sacrificial formwork is placed over the upper part of each large block A, and concrete 5 is placed in the concrete placement space of each large block AI and on the floor steel plate 4.

[Example 2] A large room block A2 is formed by forming a wall steel plate 1 on all sides, which serves as a formwork that also serves as a structural material, and a floor steel plate 4 extending above. A plurality of large room blocks A2 are placed next to each other, and concrete is poured between Construction is carried out sequentially so as to have a construction space B2, and if necessary, a wall steel plate l is placed to serve as the outer formwork, and this large room block A2 is internally bolted 3 to each other at the joint part of the steel plates 1 and 1, and the above-mentioned Concrete is placed in the concrete placement space B2 and on the floor steel plate 4.

In addition, in the above-mentioned Example 1.2, the lower end of the steel plate 1.1 is installed on the L-shaped inner 7 installed in the concrete 6 of the foundation or floor slab, and is fixed with the anchor bolt 8. Further, a shear reinforcing bar 10 is arranged between the concrete 9 in the steel plate 1.1 and the concrete 6 of the floor slab, and a base plate 13 with jerky 11 or stud bolts 12 projecting downward is arranged at the bottom.

When connecting steel plate 1.1 on the upper floor above steel plate 1.1,
The joint plate 14 is used to perform the bolt connection. Further, reinforcing bars 15 are provided at the upper and lower ends of the steel plate 1.1 to accommodate reinforcing bars 15 embedded in the slab concrete.

〔Effect of the invention〕

The present invention has the above-mentioned structure, and is constructed by connecting large blocks made of steel plates formed in advance, and each large block is assembled by bolting the joints provided inside the structure. Constructed by pouring concrete inside large blocks and on floor steel plates, it saves labor in assembling reinforcing bars, installing embedded metal fittings, building formwork, etc. It also reduces the work involved in welding joints, preventing distortion during welding, and Since complicated work such as straightening distortion can be done labor-savingly, many skilled workers are not required and the construction period can be shortened. Furthermore, since the joints are not exposed to the surface of the structure, there is no need to place any restrictions on the attachment of embedded hardware, sleeves, etc.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of the construction process of the first invention;
Figure 3 is a plan view, Figure 4 1. II. m, ■, v, vt, vn, Figure 5 1. If,
nu, TV. V, Vl, ■ are plan views showing modified examples of joints;
The figure is an exploded perspective view of the construction process of the second invention, Figure 7,
Figure 8 is a plan view, Figure 9 ■, ■, Figure 10 1. II
Figure 11 shows a plan view and an elevation view showing a modified example of the joint.
．． ■, I [I, TV figure is a vertical cross-sectional view of the anchoring part at the bottom of the steel plate, Fig. 12 1. n, Figure 13■. (2) is a vertical cross-sectional view of the connection part on the upper part of the steel plate. A1...Large block, A2...Large room block, Bl, B2...Concrete placement space, C...Intersection, 1...Steel plate, 2...Partition steel plate, 3... Bolt connection, 4... Floor steel plate, 5... Concrete, 6
...Concrete, 7...L-shaped inner, 8...
Anchor bolt, 9... Concrete, lO... Shear reinforcement, 11... Sharkey-112... Stand bolt, 13... Base plate. Figure 2 Figure 3 ■ Exit diagram ■ Doorwork funeral diagram Δf ■ Figure cross) Figure Figure ■ 5;

Claims (2)

[Claims] (1) Form a large block with an internal space for concrete pouring using opposing steel plates that serve as formwork that also serves as structural material.The large blocks are erected one after another, and the steel plates are connected to each other at the intersections of the large blocks. A steel plate concrete structure characterized in that bolts are connected inside the large blocks, a floor steel plate is spanned over the upper part of each large block, and concrete is poured in the concrete placement space of each large block and on the floor steel plate. Joining method. (2) A large room block is formed by wall steel plates on all sides, which serve as a formwork that also serves as a structural material, and a floor steel plate is placed above, and a plurality of the large room blocks are placed next to each other, with a concrete pouring space in between. Construction was carried out in stages, and steel plates were internally bolted together at the joints of large room blocks.
A method for joining a steel plate-concrete structure, characterized in that concrete is placed in the concrete placement space and on the floor steel plate.