JPH04155021A - Construction method for underground structure - Google Patents

Abstract

PURPOSE:To facilitate execution and improve strength by continuously providing panel members which formwork panels are arranged on reinforcement arranged units provided in parallel with mesh-like reinforcement arranged bodies for the floor, the wall, and the roof of a drilled hole, and placing concrete. CONSTITUTION:A plurality of sheets of mesh-like reinforcement arranged body 1, 1 are spacedly provided in parallel and formed into one body as a reinforcement arranged unit 2. Nextly, formwork panels 8... are arranged in proximity to the inside and the outside of the reinforcement arranged unit 2, at least on the outer face of one side water-barrier sheets 9... are coated to form floor panel members 10, 10 and wall panel members 11, 11. Nextly, required number of the floor panel members 10 and the wall panel members 11 are respectively built in the bottom part and the wall part of a hole drilled on the ground, connected, fixedly secured, and concrete 17... is placed between respective formwork panels 8, to form a floor and a wall. Nextly, a roof 18 of similar constitution to the floor and the wall is formed on the opening part of the upper end of wall part, and hence an underground construction is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of constructing an underground structure made of reinforced concrete.

[Conventional technology] Conventionally, when constructing an underground structure made of reinforced concrete, the floor, wall, and roof of a hole dug in the ground are
An underground structure made of reinforced concrete is constructed by arranging reinforcing bars such as vertical and horizontal reinforcing bars, placing formwork panels on both sides of the reinforcing bars, and pouring concrete between the formwork panels. is building.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, it takes time and effort to arrange reinforcing bars such as vertical and horizontal reinforcing bars and to arrange formwork panels inside holes that are difficult to work with. In addition, there is the problem that mechanical strength will vary if longitudinal reinforcement, horizontal reinforcement, etc. are not placed accurately.Furthermore, since concrete does not have water-blocking properties, it is difficult to treat drainage in underground structures. There was also the issue of having to do something.

The present invention was made to solve the above-mentioned conventional problems, and it is necessary to arrange reinforcing bars and formwork panels inside holes that are difficult to work with. Therefore, it is an object of the present invention to provide a method for constructing an underground structure in which there is no risk of variations in mechanical strength due to reinforcement precision, and in addition, the water-blocking properties of the underground structure are significantly improved. be.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention integrates a plurality of mesh-like reinforcement bodies in parallel at intervals to form a reinforcement unit, and provides formwork reinforcement near the inner and outer surfaces of the reinforcement unit. A water-repellent sheet is placed on at least one outer surface of the formwork panel to form a floor panel member and a wall panel member, and the floor panel is placed on the floor of a hole to be dug in the ground. A desired number of members are built, connected and fixed, and a desired number of wall panel members are built into the wall of the hole, connected and fixed, and concrete is placed between the formwork panels of the floor panel member and wall panel member. The method is characterized in that an underground structure is constructed by pouring the concrete and then forming a layer in the opening at the upper end of the wall panel member.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below based on drawings showing examples thereof.

1 to 3 show a plurality of mesh-like reinforcement bodies 111.
, .
, . . . are arranged vertically and horizontally in a lattice shape and are integrally welded to form a plurality of mesh-like reinforcement bodies 111. ... are arranged in parallel at intervals, and the upper and lower ends of the mesh-like reinforcement bodies 1.11... are integrally welded via reinforcing bars 4.4, .... Unit 2 is shown in Figure 2, in which the upper and lower ends of the mesh-like reinforcement bodies 1, 11, formed of reinforcing bars 3, 3, 3, 3, 3, 3, 3, 3, 11, 11, etc. are bent in the same manner as above. Fig. 3 shows a reinforcement unit 2 which is integrally formed by welding via a support frame 5.5, which is formed by forming a mesh reinforcement unit 2, and Fig. 3 shows a reinforcement unit 2 formed by integrally welding through a support frame 5.5. 1% 11... are arranged in parallel at intervals, and the mesh-like reinforcement body! , 1, . . . are integrally welded together via reinforcing bars 7, 7, . . .

4 and 5 show that a formwork panel 8.8 is disposed near the inner and outer surfaces of the reinforcement unit 2/÷-, and at least one of the formwork panels 8.8 is On the outside,
A floor panel member IO and a wall panel member 11 formed by applying a synthetic resin sheet such as a polyethylene sheet, a polypropylene sheet, a rubber sheet, or other water-blocking sheet 9
FIG. 4 shows a mesh-like reinforcement body 1% facing the inner surface 12 and the outer surface 13 of the reinforcement unit 2.
FIG. 5 shows a floor panel member 10 and a wall panel member 11 with a formwork panel 8.8 disposed on the outside of the reinforcement unit 2, and FIG. . - In addition, when arranging the formwork panel 8.8 as described above, for example, as shown in FIGS. 15 or use a fixture such as a tacker to attach the formwork panel 8.8.

It is optimal if the formwork panels 8.8 are fixedly attached to the shrug-like reinforcement bodies 1, 1, since the formwork panels 8.8 can be reliably arranged.

Further, FIGS. 6 and 7 show different embodiments in which a water-blocking sheet 9 is applied to the outer surface of the formwork panel 8 to form a floor panel member 10 and a wall panel member 11, FIG. 6 shows an embodiment in which a water-blocking sheet 9 is applied to the outer surface of a formwork panel 8, and the edge portions of the water-blocking sheet 9 are folded back to the side surfaces of a floor panel member 10 and a wall panel member 11. 7, a water-shielding sheet 9 is attached to the outer surface of the formwork panel 8, and the edge of the water-shielding sheet 9 is extended from the side surface to the back surface of the floor panel member 10 and the wall panel member 11. In addition, as shown in FIGS. 6 and 7 above, the edge of the water-blocking sheet 9 is folded over the side surface of the floor panel member 10 and the wall panel member 11, and from the side surface to the back surface. When folded back, the floor panel member 10 is placed on the floor of a hole dug in the ground 16, as shown in FIG.
A desired number of wall panel members 11 are built into the wall of the hole, connected together, and fixed with bolts, nuts, etc., and a desired number of wall panel members 11 are built in and connected to the wall of the hole, and fixed with bolts, nuts, etc., and the floor Panel member IO and wall panel member 11
Concrete 17 is poured between the formwork panels 8 and 8,
Next, when constructing an underground structure by forming a roof 1B at the opening at the upper end of the wall panel member 11, the floor panel member 1
0 and the wall panel member 11 to improve watertightness.Also, as shown in FIG.
When constructing an underground structure by forming an underground structure, if the roof 18 is formed using a roof panel member having the same structure as the wall panel member 11 and the floor panel member IO, the floor, wall, and roof are made of the same material. It can be formed using the same method.

In addition, when a desired number of floor panel members IO and wall panel members 11 are installed, connected and fixed, the floor panel members 1
As shown in FIGS. 1 and 2, a connecting piece 19 is
．． As shown in FIG. 9, the connecting pieces 19. .6
A connecting piece 20 is attached to the side end of the reinforcement unit 2 consisting of .
．． 20, . . . are welded to protrude, and as shown in FIG. In some cases, they may be installed consecutively.

In addition, when pouring the concrete 17 in the formwork panel 8.8 as described above, if it is difficult to pour the concrete 17, an injection hole is drilled in the formwork panel 8 and the injection hole is The concrete 17 may be poured and placed, or some of the formwork panels 8 may be placed after the concrete 17 is placed.

In addition, as mentioned above, a plurality of mesh-like reinforcement bodies l, 1, .
When forming the reinforcement unit 2 by arranging and integrating the...,
As shown in FIGS. 1 to 3, when a desired number of mesh-like reinforcement bodies 1 and 1 are arranged and integrated between two mesh-like reinforcement bodies 1 and 1, the mesh The shaped reinforcement body 1 exerts the action of a main reinforcement.

Furthermore, in the underground structure constructed according to the present invention, after removing the formwork panels on the indoor side of the floor, walls, and roof as necessary, interior finishing materials are attached and the interior finishing is completed. Good.

〔Effect of the invention〕

As described above, the present invention integrates a plurality of mesh-like reinforcement bodies in parallel at intervals to form a reinforcement unit, and arranges formwork panels near the inner and outer surfaces of the reinforcement unit. At the same time, a water-blocking sheet is applied to the outer surface of at least one of the formwork panels to form a floor panel member and a wall panel member, and the floor panel member is placed on the floor of the hole to be dug in the ground as desired. At the same time, the desired number of wall panel members are installed on the wall of the hole, connected and fixed,
In addition, concrete is poured between the formwork panels of the floor panel member and the wall panel member, and then a roof is formed over the opening at the upper end of the wall panel member to construct the underground horizontal structure. The mesh-like reinforcement body acts as a reinforcing material such as vertical reinforcement and horizontal reinforcement, and formwork panels are arranged in advance near the inner and outer surfaces of the reinforcement unit made of the mesh-like reinforcement body. Since the floor panel members and wall panel members are formed using the conventional method, there is no need to arrange reinforcing bars or formwork panels inside holes that are difficult to access. Therefore, there is no risk of variations in mechanical strength due to reinforcement precision, and in addition, the water-blocking sheet can improve the lack of water-blocking properties, which is a drawback of concrete, making it suitable for underground structures. Waterproofing properties are also significantly improved.

[Brief explanation of drawings]

1 to 1O show embodiments of the present invention, FIGS. 1 to 3 are perspective views of different embodiments of the reinforcement unit, and FIGS. 4 and 5 show floor panel members and wall panels. 6 and 7 are enlarged vertical cross-sectional views of main parts of different embodiments of the member.
The figures are schematic vertical cross-sectional views showing different states of application of water-blocking sheets on the floor panel member and wall panel member, FIG. The figure is a perspective view showing different long throw states of the floor panel member and the wall panel member. l...Mesh-like reinforcement body, 2...Reinforcement arrangement unit, 8
...Formwork panel, 9...Waterproof sheet, 10...
・Floor panel member, 11...Wall panel member, 16...
Ground,! 7...Concrete, 18...Roof.

Claims (1)

[Claims] 1) A plurality of mesh-like reinforcement bodies are arranged side by side at intervals and integrated to form a reinforcement unit, and formwork panels are arranged near the inner and outer surfaces of the reinforcement unit, and formwork panels are arranged in the vicinity of the inner and outer surfaces of the reinforcement unit. A water-blocking sheet is applied to at least one outer surface of the panel to form a floor panel member and a wall panel member, and the desired number of floor panel members are then installed in the floor of a hole dug in the ground, connected and fixed. At the same time, a desired number of wall panel members are built into the wall of the hole, connected and fixed, concrete is poured between the formwork panels of the floor panel member and the wall panel member, and then the wall panel members are A method for constructing an underground structure, comprising constructing the underground structure by forming a roof over an opening at the upper end.