JPS61130525A - Reinforcing work for natural ground - Google Patents

Abstract

PURPOSE:To construct a formwork on natural ground with good efficiency by a method in which metal net cages are set in a lattice form on the natural ground, the crossing points of the cages are temporarily coupled with cross- shaped connecting plates, and anchor is driven into the central hole of the connecting plates, and cement mortar is sprayed on them. CONSTITUTION:A latticed formwork is constructed to the natural ground by using metal net cages 1 of a square cross section, and the crossing points of the cages 1 are temporarily coupled with a cross-shaped connecting plate 2. An anchor is driven into the ground through a fixing hole 4 drilled at the center of the plante 2, and cement mortar or concrete is sprayed onto the cage 1, the connecting plate 2, and the anchor to bury them. The formwork made of light-weight metal net cages 1 can be easily handled due to its light weight with respect to assembling operations, etc., and the fixing operation of the cage 1 to the ground can be quickly made because the connecting plate and the anchor are used. The safety of the operations can be raised, and the formwork can be constructed on the ground with good efficiency.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a ground reinforcement method for reinforcing a ground for the purpose of nature protection or environmental conservation.

[Conventional technology]

For example, when constructing roads by cutting down slopes of mountains,
Reinforcement work is required to prevent the uncut slope from deteriorating. The method used for this reinforcement work is that the side formwork that will be laid facing each other at the construction site and the reinforcing bar cage that will be installed within this side formwork are manufactured in advance as prefabricated materials in a factory, and the prefabricated There is a construction method in which a framework is constructed by assembling timber on a lattice on the ground of a slope, which is fixed to the ground using anchor reinforcing bars, and then this framework is sprayed with mortar or concrete, and the framework is buried on the ground. Are known.

[Problem to be solved by the invention 1] The conventional ground reinforcement method using side formwork and reinforcing bar baskets formed as prefabricated materials can save labor in assembling reinforcing bars and formwork on slopes with poor working conditions. Although it has the advantage of being lightweight and easy to install, it is very cumbersome as it requires work such as tightening bolts to connect the individual side formwork and the reinforcing bar cage.
Additionally, there is a problem in that costs are unavoidably high due to the required amount of materials. c.Means for Solving Problems] In view of the above-mentioned points, the present invention unifies the necessary constituent materials of the formwork, makes it possible to extremely easily assemble the formwork on the ground, and at the same time makes it easy to construct the formwork. The purpose of this project is to provide a ground reinforcement method that has excellent stability of the framework and is extremely economical. Therefore, the above-mentioned object of the present invention is to use a base body with a rectangular cross section which is a wire mesh layer as a formwork material, to construct a lattice-like framework on the ground using this base body, and to form a lattice-like framework on the ground, and at the same time to construct a grid-like framework on the ground, and also to create a cross section between the base bodies that intersect with each other. Temporarily fasten with a cross-shaped connecting plate 1
Next, an anchor material is driven into the ground through the fixing hole drilled in the center of the connecting plate, and each set of intersecting bases is fixed to the ground together with the connecting plate using the anchor material, and all the bases are fixed. This is achieved by a ground reinforcement method in which the concrete is buried on the ground by spraying mortar or concrete. [Example 1] The framework materials used to carry out the construction method of the present invention are a wire mesh layer base 1, a cross-shaped connecting plate 2, and an anchor material 3 produced in a factory. A piece with a rectangular cross section about the size of a country angle and a length of about 2 m is used, and as the connecting plate 2, a thin metal plate or plastic plate with a length of about 50 cm and a width of about 8 ann is used, and as the anchor material 3 Use the appropriate length depending on the condition of the ground. Therefore, the above-mentioned connecting plate 2 is formed as a perforated plate in which the fixing hole 4 made especially in the central part (intersecting part) is a round hole with a diameter of about 3 am, and 5 indicates other holes made on the connecting plate 2. ing. Next, one working procedure will be explained. First, the necessary quantities of each of the above-mentioned materials produced at the factory are prepared, and first, a lattice-shaped framework is assembled on the ground using the base 1. When assembling this framework, the parts where the brushes 1 intersect are temporarily fixed with the connecting plate 2 placed on the intersecting parts, and then the anchor material 3 is inserted into the ground through the fixing hole 4 of the connecting plate 2. By driving the anchor material 3, the intersection portions of the writing brushes 1 are fixed together with the connecting plate 2 on the ground. Next, the construction method of the present invention is carried out by spraying mortar, concrete, etc. (not shown) onto all of the framed base bodies 1 to bury the base bodies 1. Therefore, the brush 1 forming the periphery of the framework
They are also connected to each other using the connecting plate 2, but the unnecessary end portion of the connecting plate 2 is bent and fixed using a 3° wire or the like so that the bent state can be maintained. A crimp fitting 6 is fixed to the anchor material to be crimped onto the connecting plate 2 when the anchor material t is driven, and four legs 6a provided on the crimp fitting 6 face around the fixing hole 4. The connecting plate 2 is inserted into each of the intersecting base bodies 1 through the holes 5 made on the connecting plate 2, thereby fixing the entire framework in a fixed state. Further, in order to temporarily fix the intersecting portions of the writing brushes 1 with the connecting plate 2, a fixing means such as a wire is used.

[Effect of the idea]

The present invention is as described above, and since the base of the wire mesh layer is used as the formwork material, it is lightweight and easy to handle, and the framing work is extremely easy. Also, the work of temporarily fixing the intersecting bases to each other and fixing them on the ground is possible. This method has the advantage of being able to be quickly and firmly constructed using cross-shaped connecting plates and anchor materials, and allows for efficient construction of a framework with excellent stability on the ground. This method is effective in correctly and orderly performing concrete filling work by spraying concrete, and together with the unification of formwork materials, it can significantly reduce work costs.

[Brief explanation of drawings]

FIG. 1 is a front view showing the state of the framework on the ground, and FIG. 2 is an enlarged view showing the connection state of part A in FIG. Fig. 3 is a plan view of the base, and Fig. 4 is a plan view of the connecting plate. FIG. 5 is a front view of the anchor material, and FIG. 6 is a plan view of the anchor material. In the figure, 1 is a base, 2 is a connecting plate, 3 is an anchor material, and 4 is a fixing hole.

Claims (1)

[Claims] A cage with a rectangular cross section made of wire mesh is used as the formwork material, and a lattice-like framework is constructed on the ground using this cage, and the intersecting parts of the cages are connected to cross-shaped connecting plates. Then, anchor material is driven into the ground through the fixing hole drilled in the center of the connecting plate, and each set of intersecting cages is fixed to the ground together with the connecting plate using this anchor material. A ground reinforcement method characterized by burying all the cages on top of the ground by spraying mortar or concrete.