JPH0112891B2 - - Google Patents

Description

[Detailed Description of the Invention] The present applicant filed the application for utility model registration in 1982.
In No. 149658, we proposed a thermal power plant building in which a top girder for suspending the boiler was installed at the top of the outer structure formed by a pyramid-shaped frame surrounding the central atrium space for installing the boiler.

The present invention was proposed for the purpose of providing a construction method that can efficiently and safely construct the thermal power plant building by utilizing the shape characteristics of the building. In a method of constructing a thermal power plant building in which a top girder for suspending a boiler is installed at the top of an outer structure formed of a pyramid-shaped frame surrounding the building, the four corner frames of the pyramid-shaped frame are Then, the top girder pre-assembled between the corner frames is lifted from the lifting device installed at the top of each corner frame to the top girder, which has been assembled in advance between the corner frames. Then, each block of the peripheral frame of the pyramid-shaped frame located between the opposing corner frames is lifted up and connected to the top girder via a lifting member suspended from a lifting device installed on the top girder. This relates to a construction method for a thermal power plant building, which is characterized by the fact that the buildings are in close contact with each other.

In the present invention, as described above, the outer peripheral structure formed in the pyramid-shaped frame surrounding the boiler installation atrium space is combined with the corner frame and the peripheral frame located between the opposite corner frames. First, the four corner frames are constructed, and each corner frame is used as a guide for lifting the top girder and peripheral frame, which will be constructed later, as described later. construction can be carried out easily and accurately.

In addition, when constructing the corner frame, it is desirable to minimize work at heights, and for this reason, the columns, beams, and attached walls and floors are assembled layer by layer, leaving them in a semi-completed state. A method is adopted in which these are stacked from the lower layer to the upper layer using cranes, and when stacking, the corner frames are shaped to become thinner as they reach the upper layer, so the weight becomes lighter as the layer goes up. This makes lifting using a truck crane, etc. easier.

Next, in the present invention, a lifting device is installed on the corner frame constructed as described above, and each of the corner portions is lifted through a lifting member suspended from the lifting device. A top girder previously assembled between frames is lifted up and connected to the top of the corner frame. Therefore, each of the corner frames serves as a support and a guide member when lifting the top girder, and the construction of the top girder can be carried out easily and reliably.

Next, in the present invention, a lifting device is installed on the top girder constructed as described above, and the peripheral frame is lifted block by block through a lifting member suspended from the device. It is adapted to be jointed to the top girder,
Therefore, each corner frame serves as a support and a guide member when lifting the peripheral frame, and the construction of the peripheral frame can be easily and reliably performed. Further, since each of the peripheral frames can undergo an independent lifting process, the construction period can be shortened.

According to the present invention, the work of lifting each member is concentrated on each layer, the number of times of lifting and the time required are significantly reduced, and work at heights is reduced, improving work safety. Furthermore, according to the present invention, since the upper floors are completed, the finished floors do not become passing traffic routes.
There is no time loss for curing. Furthermore, since the upper layer is finished, the present invention has many advantages, such as work being carried out without being affected by rain and snow, and work efficiency being improved.

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

Figures 1 and 2 show a thermal power plant building, and the outer structure is formed of a pyramid-shaped frame surrounding a central boiler installation atrium space a, with four corner frames A and an opposing corner frame A. Corner frame A,
It consists of a peripheral frame B disposed between A and A, and a top girder C for suspending the boiler is disposed at the top of the outer frame.

Therefore, a floor with in-plane rigidity is provided by horizontal braces at an appropriate height surrounding the atrium space a, and a pyramid-shaped sloped external structure brace surface is provided at the portion that touches the outer periphery of the floor surface. By arranging
The horizontal force generated by the earthquake in the atrium space a and the top-heavy plant equipment installed on the floor is transmitted to the exterior surface over a minimum distance by the horizontal brace on the floor, and is efficiently transmitted downward. It is transmitted and flows to the foundation around the outside, and there are no vertical braces inside the building, so plant equipment, ducts, etc. can be placed freely. Furthermore, the outer structure is formed on a pyramid-shaped sloped exterior brace surface, which simplifies the shape and reduces the outer covering area, simplifying rain protection and finishing work, improving work efficiency and improving finishing. The area was saved, the form of the building was simplified, and the seismic horizontal force was transmitted to the exterior brace surface with a minimum area, and the number of structural materials was saved. This is as explained in New Patent Application No. 149658.

In the present invention, the corner frame is first constructed. That is, as shown in Fig. 3, the columns 1, beams 2, floor 3, and outer wall 4 of one-story frame block A' are assembled, and as shown in Fig. 4, the upper floor is moved from the lower floor using a truck crane 5. Stacked and spliced,
Construct each corner frame A.

Next, between each corner frame A, the ground assembly and external finishing of the top girder C are performed in advance, and the VSL jack J is installed on the top of the corner frame A that has already been constructed at a predetermined position as described above, A steel wire 6 as a lifting member is suspended from the same jack J, and its lower end is connected to the top girder C.
The top girder C is attached to the top of each corner frame A by operating the jack J and lifting the top girder C using each corner frame A as a guide (see FIG. 5). (See Fig. 6) Next, a total of four VSL jacks J are attached to both ends of each side portion C' of the top girder C, two each on the inside and outside. (Figure 4 shows the mounting position of the same jack J. However, to simplify the explanation, only one peripheral part is shown.
Only C′ is shown. ) Steel wire 7 from each jack J
and attach it to the frame block B' for composing the peripheral frame B for one layer, which has half-completed the ground assembly, interior and exterior finishing, and equipment, and operate the jack J to lift the block B' and attach it to the top girder C. (See Figure 7) Next, bring in the next frame block B' and attach the steel wire 7.
(See figure) Operate jack J to lift block B' (see figure 9) and connect it to upper block B'. At this time, the outer jack J is connected to the upper block connected to the top girder C as shown in J'.
This is to balance the blocks being moved and lifted outside B'. Thereafter, in the same manner, the outer jacks J are sequentially moved to the outside of blocks B' on the lower floor, and the blocks B' group are lifted and spliced to construct the peripheral frame B, thereby completing the thermal power plant building. be.

10 to 12 show another embodiment of the present invention. After the construction of the corner frame A and the top girder C is completed in the same manner as in the previous embodiment, each side portion of the top girder C is A total of 4 VSL jacks J, two on the outside and two on the outside, are installed at both ends, and steel wires 8 are suspended from each jack J to construct a one-story peripheral frame with half-completed ground assembly, interior and exterior finishing, and equipment. Attach to configuration frame block B'. Inside the block B', a steady rest guide column 10 with a guide roller 9 mounted thereon is erected, and on the block B' there is also a steady rest guide roller that rolls along the column of the corner frame A. 11 is installed. (See Figure 10) Next, operate the jack J to adjust the block.
Lift B' to the height at which the next block will be built (see Figure 11). Bring in the next block B' to the bottom of the same block B' and join them together (see Figure 11).
(See figure) Lift up both blocks B' and B', bring in and connect the next block B' below them, and
(See Figure 2) In the same manner, each block B' is spliced while being lifted up and connected to the top girder C to construct the peripheral frame B, thereby completing the thermal power plant 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 drawings]

Fig. 1 is a vertical cross-sectional view of a thermal power plant building constructed by the method of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a slope view of a corner frame block, and Fig. 4 is a corner view. FIG. 5 is a vertical cross-sectional view showing the top girder in a lifted state; FIG. 6 is a vertical cross-sectional view showing the peripheral frame in construction; FIGS. 7 to 9 FIGS. 10 to 12 are vertical cross-sectional views showing the construction steps of the peripheral frame in other embodiments of the method of the present invention. A... Corner frame, A'... Corner frame block, B... Peripheral frame, B'... Peripheral frame block, C... Top girder, a
...Blowing space for boiler installation, J...VSL jack, 6, 7, 8... Steel wire.

Claims (1)

[Claims] 1. In a construction method for a thermal power plant building in which a top girder for suspending a boiler is installed at the top of an outer structure formed of a pyramid-shaped frame surrounding a central atrium space for installing a boiler, Two corner frames are constructed in advance, and then the pre-assembled top girder is lifted between each corner frame via a lifting member suspended from a lifting device installed at the top of each corner frame. The peripheral frame of the pyramid frame located between the opposing corner frames is connected to the top of the corner frame through a lifting member suspended from a lifting device installed on the top girder. A construction method for a thermal power plant building characterized by lifting each block and connecting it to the top girder.