JPH0420471B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to the use of a finishing gantry that also serves as a formwork.

(Prior art) Conventionally, the method of using this type of gantry is to first stack assembled scaffolds upwards in the number corresponding to the height, starting from the bottom, and then supporting the formwork with shoring at the top. Concrete was placed on the formwork, and after curing, it was removed from the upper scaffolding to the lower scaffolding depending on the construction work, and then transported and removed.

(Problems to be Solved by the Invention) According to the conventional method of using a gantry, the scaffolding for each component is assembled, so especially for underground construction, the loading place and space are limited, making loading and unloading difficult. It is not easy and requires means such as a lifting machine, making loading and unloading work inefficient, and demolition work is carried out from the upper scaffolding downwards, so dismantling and lowering the scaffolding at high places is not necessary. It is difficult to carry out the work smoothly, and there are safety issues.

SUMMARY OF THE INVENTION An object of the present invention is to enable easy, efficient and safe disassembly work, and to make it possible to carry in and take out a gantry efficiently.

(Means for Solving the Problems) The method of using the gantry of the present invention is to use a plurality of struts configured by separably connecting a plurality of strut members of a predetermined length, and connecting each strut with the upper and lower ends. It uses a finishing gantry that also serves as a formwork and is equipped with horizontal connecting materials arranged at intervals in the direction, and first, each of the above-mentioned supports is erected on the installation surface, and then the horizontal connecting materials are installed between the above-mentioned supports. connect them with timber, install a formwork support at the top of the gantry, pour slab concrete on top of the formwork to form a slab, then dismantle the formwork support, and then install the formwork support at the top of the gantry. With the gantry suspended, the strut materials are successively separated from below the struts.

(Function) By dismantling the gantry from below while it is suspended, dismantling work and carrying out the support materials can be carried out on the installation surface of the gantry.

(Example) First, as an example of a gantry used in the present invention, one used when constructing an underground atrium will be described.

The gantry shown in FIGS. 1 and 2 connects columns 1 with horizontal connecting members 2, 2a arranged in a planar grid pattern, and further reinforces the columns with braces 3. be.

Each pillar 1 consists of a plurality of pillar materials 11, 12, 13, 14 of equal length of about 2 m that can be carried by two workers.
15, 16, and 17 are connected. As shown in FIG. 3, the connection method is to connect the upper and lower H-section steel struts using joint plates 4 and bolts 5 so that they can be separated.

Further, the horizontal connecting members 2 and 2a are made of C-shaped steel, and are installed between the columns 1 at a predetermined interval in the vertical direction. In this construction method, the horizontal tie member 2 on one side (in the left-right direction in Fig. 1) is removably supported by bolts 7 on the angle member 6 attached to the flange of the post 1 as shown in Fig. 4. The other horizontal tie member 2a (in the direction perpendicular to the plane of the paper in FIG. 1) is placed and supported on the horizontal tie member 2.

Next, how to use the gantry of the present invention will be explained.

First, after pouring slab concrete for the lowest floor and constructing the slab S, a base B of H-shaped steel is installed on this slab, and the lowest support member 11 of the support column 1 and the angle member are placed on this base. Attach 6. This support is assembled into one support by sequentially connecting support members 11 to 17. Next, the horizontal connecting members 2 are placed on each angle member 6 and connected with bolts 7, and the horizontal connecting members 2, 2a are installed on each support column 1 from the lower floor to the top. After erection, install brace 3.

Thereafter, a formwork support H is provided on the gantry, a formwork K is set on the formwork support, and slab concrete is poured on top of the formwork K to construct the slab S1.

After constructing the slab S1 and dismantling the form support H, equipment piping work is performed as the first equipment work. After completing this equipment piping work, a chain block is attached to the lower surface of slab S1, the gantry is suspended from the bottom of slab S1 by this chain block, and while this gantry is suspended, the lowermost support member 11 is dismantled, and The support pillars 11 are lowered by the length thereof, the support pillars 12 are fixed to the base B, and the ceiling surface is constructed as the second equipment work.

After completing this second equipment work, follow the same procedure as above to dismantle the support columns 12 while keeping the gantry suspended, lower the gantry, fix the support members 13 to the foundation B, and complete the equipment work and grit. Carry out construction work.

After completing this work, the gantry will be lowered in the same way and the catwalk and horizon work will be carried out. After completing this cat walk construction, post 1
The support materials will be dismantled one by one starting from the bottom, horizontal construction will be carried out, and finally the gantry will be dismantled.

(Effects of the Invention) According to the method of use of the present invention, the gantry is dismantled while the gantry is suspended from the bottom of the slab. Since the dismantling work can be carried out on the surface and this installation surface can be used as a material storage area, the dismantling work can be carried out easily, efficiently and safely, and effective space can be secured. Additionally, during disassembly, the support can be disassembled into multiple pieces, allowing for efficient loading and unloading.

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view, Figure 2 is a cross-sectional view taken along the line shown in Figure 1, Figure 3 is a slope view of the connecting part of the struts, and Figure 4 is a vertical cross-sectional view.
The figure is an enlarged cross-sectional view showing the state of connection between the strut and the horizontal tie member. 1... Strut, 11-17... Strut material, 2, 2a
...Horizontal tie material, K...Formwork, S...Installation surface (slab), S1...Slab.

Claims (1)

[Claims] 1 Equipped with a plurality of struts constructed by separably connecting a plurality of struts of a predetermined length, and horizontal connecting members that connect the struts and are arranged at intervals in the vertical direction. A finishing gantry that also serves as formwork is used, and the above-mentioned supports are first erected on the installation surface, then the above-mentioned supports are connected with the above-mentioned horizontal connecting materials, and formwork shoring is installed at the top of the gantry. Slab concrete is cast on the formwork to form a slab, then the formwork supports are dismantled, and the support materials are separated from the bottom of the support in sequence with the gantry suspended from the bottom of the slab. How to use the formwork-cum-finishing gantry, which is characterized by going.