JPS59138617A - Slope protective work - Google Patents

Abstract

PURPOSE:To easily perform the protective work of slope at low cost by a method in which a semi-cylindrical formwork is set on a slope in such a way as to enable its longitudinal direction to incline vertically, and cement mortar, etc., is placed into the space formed by the formwork and the ground. CONSTITUTION:Iron bars 12 are set between two metal nets 11 arranged in parallel and light-weight concrete is placed to form a semi-cylindrical concrete block 1. The semi-cylindrical concrete blocks 1 are connected with connectors 2 to form a formwork A. The formwork A is set on the sloped ground in such a way as to enable its longitudinal direction to incline vertically, and cement mortar or concrete is placed into the space formed by the formwork A and the ground.

Description

[Detailed description of the invention] Industrial applications This invention relates to a slope protection method.

BACKGROUND TECHNOLOGY Conventionally, there have been mortar spraying methods, masonry methods, concrete wall construction methods, sill frame construction methods, and Ankani methods as methods for preserving slope surfaces, but each of these methods has its own drawbacks.

In other words, the mortar spraying method lacks durability, and the masonry method and concrete wall construction method require a great deal of labor, are dangerous, and have high construction costs.

In addition, when constructing using the slope method, the cut slope is generally very uneven and the work is done on a slope, so it takes time and money to assemble the formwork, and the formwork is assembled.
According to the present invention, a structure is formed on a slope to stabilize the slope.

That is, the object is to provide a frown protection construction method that is easy to construct, can significantly shorten the construction period, and can reduce construction costs.

Structure of the Invention The method for protecting a frowning surface according to the present invention is to install a semi-cylindrical form made of a cement material on a slope so that the longitudinal direction of the form is inclined vertically, and to connect the form and the ground. The above objective is achieved by constructing a structure by pouring mortar or concrete into the space formed by the above.

Example Next, the invention will be described in detail based on the illustrated embodiments.

(1) Formwork installation The frown protection method according to the present invention uses a semi-cylindrical formwork A. The embodiment shown in FIG. 1 shows a case where a Punklitopk 1 is used as the formwork. The concrete block 1 has two wire meshes 11 placed in parallel, and the wire meshes 11
．． It is made of lightweight concrete 13 with reinforcing bars 12 placed between the holes 11.

Reinforcement bars 12 are placed on the inner surface of the concrete block 1 in advance.
It is possible to make it stick out so that it can be well fixed to the concrete etc. placed inside.

A plurality of these four concrete slabs 1 are connected together by a connecting member 2.

In the embodiment shown in FIG. 1, an angle member having an angular cross section is used as the connecting member 2, and is fixed to the bottom of two parallel sides of a concrete brook 1 with bolts or the like and connected together.

Others are long as shown in Figure 2. A channel material is used as the connecting member 2, the C channel material is fixed on the slope surface with an anchor 3, the upper part of the anchor 3 is made to protrude somewhat, and the :0I concrete block 1 is fixed on the slope surface with a nut etc. and connect them together.

Further, as shown in FIG. 3, a connecting member 2 formed by connecting C channel material or H steel to a ladder feeder is fixed to the ground by an anchor 3, and a concrete block l is integrally connected to the anchor 3. Both ends of the connecting member 20 are in contact with both inner surfaces of the concrete block 10 to prevent the solutal cape from flowing out from between the ground and the bottom of the concrete block.

In the connecting member 2 made of H steel etc. assembled in a ladder shape, the ground was exposed between the H# etc., so it was cast inside the concrete block 2; the concrete and the ground were well anchored.

The formwork A may be formed on-site as shown in FIG. That is, a thin copper plate 4 having a U-shaped cross section and corrugated surfaces is installed on the slope, and a wire mesh 41 is stretched around the outer periphery.
This thin steel plate 4 is fixed to the ground using a U-shaped fixing member 42 made of a steel plate, and a formwork A is formed by spraying it with a strainer Y43.

The formwork is not limited to the above embodiments, and for example, a flat concrete box may be assembled into a semi-cylindrical shape. Since it is a hammered formwork that can withstand the strength of

[2] It is conceivable to place the semi-cylindrical formwork on the ground like a reinforcing bar arrangement company and then pour concrete as it is, but it is also possible to arrange the reinforcing bars 5 inside the formwork. can be adopted.

For example, four reinforcing bars 5 are joined together by parallel bars 51 and fixed to the ground using anchors 3.

[3] Laying a reinforcing net A method of protecting the slope by spraying #&rutal on the slope is generally adopted, but spraying can also be used to reinforce structures by installing them in the form of mortar.

As shown in Fig. 5, a steel reinforcing net 6 is laid on the slope, the reinforcing net 6 is fixed with anchor pins, and mortar is sprayed on top of the reinforcing net 6. It is possible to stabilize the slope by constructing a structure by installing formwork A as described above.

[4] Formwork A that seals the gap between the formwork and the ground is installed on the slope after 5K as described above, but formwork A
The gap created between the bottom of the side surface and the ground is sealed by spraying mortar 7 or the like.

If the gap is large, the gap is sealed by filling it with earth and sand, or by using a wire mesh and spraying mortar 7 on top of it.

Foundation concrete 9 is constructed at the bottom end of the formwork.

[5] Placing concrete, etc. In step 5 above, pour the mortar or concrete 10 placed on the slope.

Generally speaking, the mortar or concrete to be placed is not a low slump type but a highly fluid type poured from the top. It is also possible to pour concrete lO.

[6] Forming the horizontal frame In step 5 above, pour concrete 10 etc. into formwork A,
It is also possible to use the structure B formed as a vertical beam and form a horizontal frame in a direction intersecting this.

That is, as shown in FIG. 7, horizontal reinforcements 16 are arranged between the structures 2 formed vertically with respect to the slope in a direction intersecting with the structure B, and on the horizontal reinforcements 16, the above-mentioned half-shaped reinforcements are placed. A cylindrical formwork A is installed and fixed to the ground with anchors 17.

The gap between the form frame and the structure 2 is sealed with mortar or the like, and mortar or concrete 10 is cast through a casting hole 15 provided in the form frame to form the cross beam C.

The horizontal reinforcements 16 can be easily constructed if they are made to protrude in advance toward the formwork Al1 when forming the vertical beams.

Effects of the Invention Since the present invention has the above configuration, the following effects can be obtained.

■ The semi-cylindrical formwork can be completed by simply installing it on the ground, so no skilled workers are required and the construction period can be significantly shortened.

■ There is no need to remove the formwork later (the construction period can be significantly shortened and construction costs can be reduced).

- Since a formwork made of cement-based material such as Funkley Dob Yotsuk is used, the shape of the formwork itself is not affected (a J41S structure can be formed).

■ Mortar or concrete is cast by pouring it into the space formed by the formwork and the ground, so the work time can be significantly reduced compared to spraying.

[Brief explanation of the drawing]

1 to 5 are perspective views of an embodiment of the frown line protection method according to the present invention, FIG. 6 is a side view, and FIG. 7 is a perspective view of another embodiment. Ao, formwork, B...! Relics, C0, crossbeam, 1, concrete dob quartet, 21. Connecting member, 36. anchor, 4
0. Thin steel plate, 50. Rebar, 61. Reinforcement net, 700 mortar, 90. Foundation concrete), 10, mortar, concrete. Figure 1 Figure 3 Voice 4171

Claims (1)

[Scope of Claims] (1) A medium cylindrical form made of cement material is installed on a slope so that the longitudinal direction of the form is inclined vertically, and the form is connected to the ground. A space formed by mountains
A slope protection construction method characterized by constructing a structure by pouring rutar or concrete. (2) The slope protection method according to claim 1, wherein the space between the bottom side of the formwork and the ground is sealed by placing mortar or the like. (3) The slope protection method according to claim 1, wherein the formwork is installed on a reinforcing net laid on the slope. (4) The slope protection method as set forth in claim 1, 2, or 3, wherein the formwork is formed of a plurality of four concrete slabs. (6) The slope protection construction method according to claim 4, wherein the unclean blocks of 'Ila are integrally connected by a connecting member.