JPH01151607A - Construction of trench structure using space wire-mesh truss - Google Patents

Abstract

PURPOSE:To make construction work easier by a method in which space wire- mesh trusses are erected on both sides of a bottom slab concrete, panels are set in a movable manner, and cement mortar is sprayed. CONSTITUTION:Wire-mesh trusses 13 are erected on both sides of a bottom slab concrete 12, and guide rails 16 are fixed to the concrete 12 outside of the trusses 13. Panels 17 are set in the rails 16, cement mortar is sprayed from a nozzle 19 onto the inner surfaces of the trusses 13, and the panels 17 are moved to form a trench structure. The construction can thus be made easier.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for constructing a trench structure such as a medium-sized drainage ditch.

[Conventional technology]

Conventional ditch structures such as medium-sized drainage ditches, for example,
As shown in Figure (A), concrete blocks 2 are stacked on top of the concrete base l, and the inner surface is covered with waterproof mortar 3.
Concrete block structure to be coated and Figure 3 (b)
As shown in FIG. 3, a reinforced concrete structure in which formwork and reinforcing bars are assembled on-site and then concrete 4 is poured, and a structure in which precast concrete members 5 are assembled as shown in FIG. 3(C) are common.

[Problem that the invention seeks to solve]

However, although the method of piling up the concrete blocks 2 and applying waterproof mortar 3 to the inner surface has the advantage of low construction cost, it also has the problem that cracks may occur in the drain due to the influence of the slope of the drain. Furthermore, although waterproof performance is ensured in reinforced concrete structures and precast concrete members 5, there is a problem in that construction costs are high.

The present invention is intended to solve the above problems, and provides a method for constructing a trench structure that has performance that is intermediate between a concrete block structure and a reinforced concrete structure, and is comparable in cost to a concrete block structure. The purpose is to

[Means for solving problems]

To this end, the method for constructing a trench structure using the three-dimensional wire mesh truss of the present invention is to erect the three-dimensional wire mesh truss on both sides of the concrete base, lay a guide member on one side of the 3-dimensional wire mesh truss, and place the guide member inside the guide member. The present invention is characterized in that a panel is movably provided, and after mortar is sprayed from one side of the three-dimensional wire mesh truss, the panel is moved and mortar is sprayed sequentially to form a groove structure.

[Effect]

In the present invention, for example, as shown in FIG. 2(c), after a guide rail 16 is laid and fixed on the concrete base 12 outside the three-dimensional wire metschedlas 13, a panel of a predetermined size is installed inside the guide rail. 17, and then mortar is sprayed from the spray nozzle 19 onto the inner surface of the three-dimensional wire menshed glass 13. When the above process is completed, the panel 17 is blown in the direction of the arrow as shown in FIG. 2(d). After moving, mortar is again sprayed from the spray nozzle 19, and the above-mentioned construction cycle is successively repeated to form the groove structure.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing one embodiment of a method for constructing a groove structure using the three-dimensional wire metshedlas of the present invention, and FIGS. 2(A) to 2(D) show groove structures according to the present invention. It is a figure for explaining the construction procedure of the construction method.

First, a method for constructing a groove structure according to the present invention will be explained with reference to FIG. As shown in Fig. 2 (a), after gravel is laid and compacted on the bottom of the excavated trench, reinforcing bars 10 for the bottom plate and reinforcing bars 11 for the walls are arranged, and concrete is poured to form the bottom plate concrete 12. Form.

Next, as shown in Figure 2 (b), the bottom concrete 1
Three-dimensional wire mesh trusses 13 are built at intervals so as to form a groove structure on both sides of the structure, reinforced with wall reinforcing steel bars 14, and support the three-dimensional wire mesh trusses 13 and the ground on both sides. It is fixed with member 15.

Next, as shown in FIG. 2(c), a guide rail 16 is laid and fixed on the concrete base 12 outside the three-dimensional wire mesh truss 13, and then a panel 17 of a predetermined size is set inside the guide rail. , and its upper part is connected and fixed by a connecting member 18.

Then, the inner surface of the three-dimensional wire mesh lath 13 is sprayed with mortar from the spray nozzle 19, and finally the mortar is sprayed and finished with a trowel.

When the above process is completed, as shown in FIG.
After moving, remote downward spraying is performed again from the spray nozzle 19, and the above-mentioned construction cycle is then sequentially repeated to form the groove structure.

FIG. 1 shows a cross-sectional view of the groove structure in the step shown in FIG. 2 (c). The three-dimensional wire metschedlas 13 built on the concrete base 12 is, for example, 2
Between the two wire mesh lines 20 and 20, there is an inclined line 21.
．． 22 are arranged to form a three-dimensional lattice-like truss. Furthermore, the panel 17 is fixed at the spraying position by the fixing member 23tJ.
It is fixed to the guide rail 16 by 24. Then, a spray nozzle 19 is installed on the inner surface of the three-dimensional wire menstrual truss 13.
When more mortar 25 is sprayed, the mortar 25 is filled between the three-dimensional wire menshed lath 13 and the panel 17.

Note that the present invention is not limited to the above embodiments,
Various changes are possible.For example, the spraying of mortar is not limited to this example, and may be sprayed from the outside, and the shape of the guide rail is not limited to this example. , L type, etc. may also be used.

〔Effect of the invention〕

As described above, according to the present invention, a three-dimensional wire mesh truss is built on both sides of the concrete base, a guide member is laid on one side of the three-dimensional wire mesh truss, a panel is movably provided within the guide member, and the three-dimensional wire mesh truss is installed on both sides of the concrete base. After spraying mortar on one side of the wire menshed glass, the panels are moved and mortar is sprayed one after another to form a groove structure, so construction is relatively easy and the cost is low.

In addition, there are many advantages in construction, such as the slope of the groove structure does not affect construction, the three-dimensional wire mesh truss helps prevent cracks in the mortar, and structural troubles do not occur.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing one embodiment of the method for constructing a groove structure using the three-dimensional wire meshed lath of the present invention, and FIG.
A) to FIG. 2(D) are diagrams for explaining the construction procedure of the method for constructing a trench structure according to the present invention, and FIGS. FIG. 12... Concrete bottom plate, 13... Three-dimensional wire mesh truss, 16... Guide rail, 17...
Panel, 19... Spray nozzle, 25... Mortar. Applicant: Ryukichi Abe, patent attorney representing Shimizu Corporation (3 others) Figure 1 I
12 colors, -1F〉7 leagues Figure 2 (A) Figure 2 (C) Figure 2 (D)

Claims (1)

[Claims] (1) Three-dimensional wire mesh truss is built on both sides of the concrete base, and a guide member is laid on one side of the truss.
A three-dimensional structure characterized in that a panel is movably provided within the guide member, and after mortar is sprayed from one side of the three-dimensional wire mesh truss, the panel is moved and mortar is sequentially sprayed to form a groove structure. A method of constructing a trench structure using wire mesh truss.