JPS61237721A - Construction of retaining wall - Google Patents

Abstract

PURPOSE:To make the construction of a retaining wall easier by a method in which the plate portion of a bag structure formed by connecting a flexible bag to a plate material is erected on the foundation ground, cement mortar is packed into the bag structure, and the bag structures are stacked up in a multistage in order. CONSTITUTION:A flexible bag 5 made of a high-strength cloth is connected to one side of a plate material 2 having a fitting portion 3 on its upper end to form a bag structure. The plate 2 portion of the bag structure is erected on the foundation ground and fixed at a design angle, and cement mortar or concrete 4 is packed into the bag 5. The plate 2 of the bag structure to be used in the second stage is fitted into the fitting portion 3 of the first stage plate 2, and concrete 4 is packed into the bag 5. The bag structures are stacked up in multistages in a repeated manner to construct a retaining wall.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a method of constructing a retaining wall.

Conventional technology Conventionally, retaining walls for quay walls, roads, rivers, residential land development, etc. It is being

Concrete block retaining walls are difficult to construct on-site, especially when constructed on steep slopes, and lack stability against horizontal forces caused by earth pressure or water pressure. To do this, assemble the wooden frame,
Concrete was poured inside, and the formwork was removed after the concrete had hardened. This kind of construction method is
It has the disadvantage that a large number of skilled workers are required to assemble and remove the formwork, and the construction cost is extremely high.

Problems to be Solved by the Invention In order to solve the drawbacks of the conventional construction method described above, the present invention can save labor in assembling and removing the deaf frame, and can be constructed more quickly than the conventional construction method. .

Moreover, it is an object of the present invention to provide a method for constructing a retaining wall that does not require skilled workers or heavy machinery as in the past and is advantageous in terms of economy.

Means for Solving the Problems The present invention involves joining a flexible bag made of high-strength cloth to one side of a board to form a bag structure, and standing the board part of the bag structure on the foundation ground. and pour mortar or concrete into the bag structure, then fit and erect the second stage bag structure with a plate, and pour concrete, etc. into the bag structure, This method of constructing a retaining wall is characterized by sequentially repeating the work of stacking in multiple stages, and in the process, draining excess water from poured concrete or the like from the bag structure and hardening it.

EXAMPLE An example of the present invention will be explained with reference to the drawings. However, the present invention is not limited to the examples.

In FIG. 1, a commercially available material such as a thin fiber-reinforced concrete board (GRC), a PC board, a reinforced plastic board (FRP), etc. is used as the board material 2. In particular, it is preferable to use a decorative board that suits the surrounding environment.

A bag body 5 made of nylon woven fabric is multi-jointed to the upper and lower width direction ends of the plate material 2 over the entire circumference of the plate material. The length of the depth of the bag body is set in advance to such an extent that the bag body 5 can sufficiently come into contact with the ground 9 on the back side after the bag body 5 is apparently expanded by pouring the concrete 4.

Further, the upper end of the plate material 2 has a fitting part 3, and the plate material 2 of the second stage is fitted to each other via the fitting part 3.

Next, the plate material 2 having the fitting part 3 at the end and the bag body 5 joined to the back side is erected and fixed at the planned slope, and then a mortar or concrete 4 is poured into the bag body 5 using a pump. inject.

Next, the second stage plate material 2 to which the bag body 5 has been joined in advance is fitted with the first stage plate material 2 that has already been poured into the bag body, and concrete 4 etc. is poured into the bag body 5 again. A retaining wall is constructed by repeating the steps of stacking and stacking in multiple stages. At this time, excess water in the concrete is discharged to the outside through the bag body. Further, a reinforcing material for integrating the stacked bag structures is 1, for example, a reinforcing bar 10 as shown in FIG. 3 is used as necessary.

In this case, it is necessary to connect the reinforcing reinforcing bars with the reinforcing bars of the retaining wall foundation in advance, and in fact, when stacking the joined plate materials like a bag through the fitting part, , so to speak, reinforcing steel is passed through each bag in the form of a skewer, and concrete is poured in after the process is completed. In this way, a reinforced concrete structure using fabric formwork can be easily formed on site.

In the construction method of the present invention, in order to save the effort of sewing the sides of the bag body 5, if wire mesh such as metal lath is used for the sides,
It can also be expected to have a side reinforcement effect, resulting in labor savings during construction.

In addition, as shown in Fig. 2, a backfill material 6 for drainage such as backfill chestnut stone is buried between the ground 9 and the main body of the retaining wall along the slope of the ground 9, or a drain mat is used. It is preferable to use various materials to save labor and to reduce the water pressure on the back side of the retaining wall.

Effects of the Invention The method for constructing a retaining wall of the present invention can save labor in assembling and disassembling complicated formwork, compared to the construction of concrete retaining walls and concrete block m walls using conventional construction methods. The bag body is used as a disposable mold, so to speak. Also, because it is easy to install, aJmT is easy! ＋η凰で方の方の方の方の方のＧａｒｔａｎｄ ｔａｎｄ ｄｅｎｄｅｒ The pan-beam negative wheel, which is particularly noteworthy, is easy to handle due to the functional combination of fabric formwork and plate materials, and it is also possible to pour a large amount of concrete at one time. It is possible to greatly increase the amount of construction work per day, and the construction cost can also be lower compared to conventional construction methods.

Furthermore, since the shape and design of a single board can be freely designed, it is possible to create concrete retaining walls with rich designs.

Furthermore, in construction, it is possible to prevent excessive tensile force from being applied to the five bags since concrete is poured sequentially from below, and it is also a construction method that can fully utilize the advantages of the fabric formwork as a temporary frame. Furthermore, it is possible to construct a concrete retaining wall that fully satisfies its function as a retaining wall.

[Brief Description of the Drawings] Figure 1 is a perspective view showing the construction method of the retaining wall of the present invention, Figure 2 is a side view of the retaining wall of the present invention (without reinforcing bars), and Figure 3 is also a side view of the retaining wall of the present invention. (with reinforcing bars), FIG. 4 is a sectional view of the fitting part. 1...Foundation part, 2...Plate material, 3...Fitting part. 4...Concrete (or mortar)% 5°
゛.

Claims (1)

[Claims] A flexible bag made of high-strength cloth is bonded to one side of the board to form a bag structure, and the board part of the bag structure is erected on the foundation ground. Injecting mortar or concrete, then fitting and erecting the plates of the bag structure in the second stage, pouring concrete, etc. into the bag structure, and repeating the steps of stacking in multiple stages, A method for constructing a retaining wall, characterized in that in the process, excess water from poured concrete, etc. is dehydrated from the bag structure and hardened.