JPS6355572B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of constructing a large building such as a nuclear power plant.

Conventionally, when constructing large buildings of this type, various works for constructing the frame and installing equipment piping were carried out in narrow spaces, resulting in poor working conditions, extremely thick walls and floors, and large-diameter reinforcing bars. After the walls and floors are carefully painted so as not to directly expose the concrete surface, each section of the building is handed over to the machinery and piping work begins, increasing efficiency. Moreover, when installing piping supports on walls or floors, if the supports are installed directly on concrete, the concrete may break due to the weight of the pipes. An iron plate with studs is buried in the concrete between the lifts, and supports are attached to this iron plate. Moreover, the number of embedded iron plates is extremely large, and it is required to arrange them with high precision within a limited period of time. However, the position of the embedded steel plate may shift during concrete pouring, making installation of the steel plate time-consuming and inaccurate.

The present invention has been proposed in order to eliminate such drawbacks, and involves connecting a pair of steel plates having shear connectors on their inner surfaces in parallel via an intermediate connecting member, and also connecting the steel plates in advance to the steel plates. A section of the building is constructed by assembling a wall unit and a floor unit in the form of a box to which equipment mounting brackets are fixed.Concrete is poured between the steel plates in each unit, and the assembly of the unit and the floor unit are performed. This relates to a method of constructing a large building, which is characterized by constructing all sections of the building by repeating concrete pouring and concrete pouring alternately.

In the present invention, as described above, a wall unit and a floor unit are constructed by connecting a pair of steel plates in parallel via an intermediate connecting member, and each unit is assembled into a box shape to constitute one section of a building. Concrete was poured between a pair of steel plates in each unit, and the assembly of the unit and the concrete pouring for the same unit were repeated alternately to construct all sections of the building, so the structure of the sections of the building was ready-made. The assembly work of the above-mentioned units can be easily and quickly carried out, and since the pair of steel plates in each unit also serve as formwork during concrete pouring, there is no need for temporary construction work when erecting formwork. Construction of the building frame is easy and quick, and since shear connectors are installed on the inner surfaces of the pair of steel plates, the poured concrete becomes integrated with the steel plates, and after the concrete hardens, the steel plates become integrated with the concrete. In addition, the steel plate protects the surface of the building frame, eliminates painting work, and significantly shortens the construction period.

In addition, since the equipment mounting brackets are fixed to the steel plates in the unit in advance, piping work can begin immediately after concrete curing, and the scaffolding, piping, piping units, etc. for piping work can be moved using a large crane on site. As a result,
The plumbing work process can be accelerated. Furthermore, since the equipment mounting bracket is fixed in advance to the steel plate of the unit, it can be accurately mounted at a predetermined position and will not move during concrete pouring, improving installation accuracy.

According to the present invention, most of the building frame is manufactured in a factory, eliminating the need for embedded hardware as in the past, significantly reducing the number of man-hours on site, the construction period, and construction costs. The present invention has many advantages.

The present invention will be described below with reference to the illustrated embodiments.

A is a factory-manufactured wall unit in which a pair of steel plates 1 and 1 are connected in parallel via a rib 2 that constitutes an intermediate connecting member, and a sleeve 3 is attached to both steel plates 1 and 1.
The sleeve 3 itself is made to function as a structural member by welding the entire periphery of both ends of the sleeve 3.
This eliminates the need for surrounding reinforcing steel bars. Furthermore, a shear connector 4 is planted on the opposite surface of the steel plate 1 to be integrated with the poured concrete. Further, a box out 5 and other necessary metal fittings are attached between both steel plates 1, and a piping support 6 is fixed to the outer surface of the steel plate.

B is a factory-manufactured floor unit in which a pair of steel plates 7, 7 are connected in parallel via ribs 8, anchor bolts 9, drain pipe 10, etc. are fixed to the steel plate 7, and a shear connector (not shown) is fixed to the steel plate 7. has been planted. The steel plates 1 and 7 of each unit A and B are coated with the required coating at the factory, and if further heat insulation and heat resistance are required, heat-resistant tiles, etc. are placed on the floor, ceiling, and wall surfaces of each unit. will be established.

Each of the above-mentioned units is sent to the site by sea transportation or the like, and at this time, vinyl sheets are stretched over the floor, ceiling, and walls to prevent salt damage.

After the units are transported to the site by sea and landed, they are hoisted into their predetermined positions using a large crane.

In this way, the wall units A are sequentially carried into a predetermined position, and the joint surfaces of the steel plates 1 of adjacent wall units A are tightened and joined with the high-tensile bolts 11, and assembled into a box shape.
Configure the sections of the building frame. (See Figures 2 to 6 and 11) Next, various equipment 12 such as tanks, pumps, and desalination towers to be accommodated in the same compartment are brought in and installed,
Scaffolding for piping work will be put in place first, and piping will be temporarily placed in the empty space.

Next, a floor unit B which also serves as a ceiling unit is mounted on the partition, and its steel plate 7 and wall unit A are connected to each other.
and the steel plate 1 are tightened together using high-tensile bolts 13,
Floor unit B was installed (see Figures 7 and 12), concrete 14 was poured between the steel plates of each unit, and after the poured concrete had cured, the actual piping work began, and work in the adjacent section was started. Start. (See Figure 8) When the construction of the relevant floor is completed, (9th
(See diagram) Start construction on the upper floor. (See Figure 10) The above steps are repeated to complete the construction of the large building.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a wall unit and a floor unit used in the method of the present invention, and FIGS. FIG. 11 is a cross-sectional plan view of the joint between the wall unit and FIG. 12 is a longitudinal sectional view showing the joint between the wall unit and the floor unit. A... Wall unit, B... Floor unit, 1...
Steel plate, 2...rib, 3...sleeve, 4...shear connector, 7...steel plate, 8...rib, 9...anchor bolt.

Claims (1)

[Claims] 1 A wall unit or a floor unit is made into a box shape by connecting a pair of steel plates with shear connectors arranged on the inner surfaces in parallel via an intermediate connecting member, and fixing the equipment mounting brackets to the steel plates in advance. The units are assembled to form one section of the building, concrete is poured between the steel plates in each unit, and the assembly of the units and the concrete pouring for the same units are alternately repeated to construct all sections of the building. A distinctive method of constructing large buildings.