JPH069069Y2 - Retaining wall - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an earth retaining wall.

[Conventional technology]

Generally, the earth retaining wall receives a considerable amount of earth pressure, and therefore needs to be sufficiently heavy to resist it and to prevent it from falling.

For this reason, when the retaining wall is made of reinforced concrete, the weight of the concrete needs to be increased, so that the amount of concrete used is very large relative to the scale, which is extremely uneconomical. Further, in the case of precast concrete, it is heavy and cumbersome to handle.

Therefore, recently, a shelf is installed on the back side of the vertical wall of the retaining wall in a state where it is embedded in the back soil, and a part of the resistance to earth pressure is obtained by the anchor-like function of this shelf. We were trying to reduce the weight of the entire wall.

However, in the past, since all of this kind of shelves were integrally formed with safety, not only was it bulky during transportation etc. and was generally cumbersome to handle, but also the shelves themselves became an obstacle when backfilling the backside after construction. It was not possible to fully bring out its function because it could not be fully returned.

In addition, when a retaining wall is constructed facing the road, a drainage groove is often also formed in front of the retaining wall. Conventionally, this type of drainage groove is parallel to the retaining wall construction or before and after it. Since this is done, the construction is likely to be complicated, and the construction period is long.

This invention was proposed in order to solve the above-mentioned conventional problems, and the back soil of the retaining wall can be reliably backfilled, and the retaining wall function can be sufficiently exerted and the economical efficiency is improved. It is an object of the present invention to provide a retaining wall that can be made lightweight, can be easily handled, and can be significantly shortened in construction.

[Means for solving problems]

In this invention, a foundation base is formed at the lower end of a vertical wall so as to have an inverted L-shaped cross section by horizontally projecting in front of the vertical wall. Is an integrally constructed retaining wall in which the vertical wall of the retaining wall is detachably attached to one side of a vertical piece of a bracket consisting of a plurality of vertical pieces and horizontal pieces. The other side of the vertical piece is removably attached to the rear side of the retaining wall that is connected adjacent to the retaining wall, and each of the anti-roll shelves is removable on the horizontal piece of this bracket. The above-mentioned object is achieved by being attached.

〔Example〕

Hereinafter, the present invention will be described with reference to an illustrated embodiment. The base 2 of the retaining wall 1 is horizontally projected from the lower end of the vertical wall 3 to the front thereof, and the retaining wall 1 has an inverted L-shaped cross section. ing. Further, the vertical wall 3 and the base 2 and the side wall 11 of the drainage groove 8 which is erected from substantially the center of the base 2 in parallel with the vertical wall 3 are integrally formed of reinforced concrete. The retaining wall 1 is mainly manufactured as a precast concrete member at the factory.

By forming the entire base base 2 and the lower ends of the vertical walls 2 to be thick, the stability and rigidity of the entire retaining wall are enhanced.

Further, the vertical wall 3 is formed so as to be gradually thinner toward the upper end from the lower end and slightly inclined rearward so that it can effectively and firmly resist the earth pressure of the back soil A. .

Furthermore, by installing a ledge 4 for preventing slippage which is located slightly above the middle part and which projects substantially horizontally into the back soil A on the rear side of the vertical wall 3, the resistance moment against earth pressure is maximized. Has been considered to be.

The shelf 4 is formed of a reinforced concrete board such as a precast concrete board.

Then, the shelves 4 are provided with retaining walls 1 and 1 that are adjacently connected to each other.
Brackets 5, 5 on the back side of each of the vertical walls 3, 3
The mounting bolts 6 and 6 are inserted into the bolt holes of the horizontal piece and are bolted respectively, and the brackets 5 and 5 are bolted by the mounting bolts 7 and 7. The mounting bolts 7, 7 are holes 5a formed in the brackets 5, 5,
It is designed to be tightened from 5a.

Further, the shelves 4 are attached in one step or a plurality of steps depending on the scale of the retaining wall 1 (see FIG. 3).

Further, the width and length of the shelf 4 can be appropriately changed according to the scale of the retaining wall 1, and the bracket 5 is also attached to the center of the rear side of the retaining wall as needed.

At the lower end of the front side of the vertical wall 3, a drain groove 8 that opens directly above is formed integrally with the vertical wall 3 and the foundation base 2 and continuously in the longitudinal direction of the retaining wall 1. This can be done at once with the construction of the retaining wall. Then, a closing plate 9 made of a reinforced concrete plate such as a precast concrete plate is attached to the drainage groove 8 similarly to the shelf 4.

In the figure, reference numeral 10 is a drain hole.

With such a configuration, at the time of construction, the retaining wall 1 not having the shelves 4 and brackets 5 attached to the retaining wall construction site is abutted on the rear surface of the vertical wall 3 with the rear surface of the vertical wall 3 facing the front and rear surfaces of the retaining wall 1, and the rear surface of the retaining wall 1 Install along the width direction.

Subsequently, the back side of the vertical wall 3 is backfilled to the position of the drainage hole 8 while being sufficiently tamped.

Then, backfilling is performed to the installation position of the shelf 4 with backfill soil having relatively good permeability such as crushed stone or gravel so that ground water on the back of the retaining wall 1 can be quickly drained from the drainage hole 10. To do.

Subsequently, the vertical pieces of the brackets 5 and 5 composed of the vertical pieces and the horizontal pieces are bolted to the back side of the vertical wall 3, and the shelves 4 are bolted to the horizontal pieces of the brackets 5 and 5.

Finally, the top of the shelf 4 is backfilled to the upper end of the vertical wall 1 while being sufficiently crushed.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

Since a shelf to prevent falling is attached to the back side of the vertical wall of the retaining wall, the moment of resistance against earth pressure of the retaining wall can be secured by the function of this shelf as an anchor. The brackets for mounting the shelves on the section securely connect adjacent retaining walls to each other, and the shelves can be mounted in multiple stages according to the scale of the retaining walls, so the moment of resistance of the retaining walls against earth pressure is required. It can be as large as possible.

Further, since the weight of the retaining wall main body can be reduced as much as possible, handling of the retaining wall such as transportation and installation can be facilitated, and materials such as reinforcing bars and concrete can be saved.

Further, the shelf is not directly attached to the vertical wall, but a bracket consisting of a vertical piece and a horizontal piece is projectingly provided on the back side of the vertical wall, and the shelf is detachably attached on the horizontal piece of the bracket. Therefore, the vertical wall and the shelf can be easily positioned, and the rigidity of the joint is significantly increased through the bracket, so that the weight of the soil backfilled on the shelf can be reliably transmitted to the retaining wall. .

Moreover, since the brackets and shelves are detachable from the vertical walls and not attached integrally from the beginning, they are extremely easy to handle without obstructing the transportation of the retaining wall, etc. It is possible to surely perform backfilling while fully compacting all the back side.

Further, since the drainage groove is provided at the lower end of the vertical wall of the retaining wall, it is possible to construct the retaining wall and the drainage groove at the same time, and it is possible to significantly shorten the construction period.

Further, as shown in the figure, the base foundation that has conventionally been projected to the rear of the vertical wall can be extended to the front of the vertical wall and the drainage groove as shown in the figure, so slope cutting and backfilling can be performed when forming the retaining wall. The number can be reduced as much as possible and the construction can be simplified.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention,
FIG. 1 is a vertical sectional view of the retaining wall, FIGS. 2 and 3 are partial sectional views showing a mounting state of a shelf, and FIG. 4 is a rear view of the retaining wall. 1 ... Retaining wall, 2 ... Basic base, 3 ... Retaining wall, 4 ...
Shelf, 5 …… Bracket, 6,7 …… Mounting bolt, 8 ……
Drain, 9 ... Block, 10 ... Drainage hole, 11 ... Side wall.

Claims (1)

[Scope of utility model registration request] 1. A base base is formed at the lower end of the vertical wall so as to have an inverted L-shaped cross section by horizontally projecting forward of the vertical wall, and a drainage groove is formed substantially in the center of the base base in parallel with the vertical wall. A retaining wall in which side walls are erected and integrally configured, wherein a plurality of brackets including a vertical piece and a horizontal piece are provided on a back surface of a vertical wall of the retaining wall, and a vertical piece of the bracket provided on a side surface of the back surface. One side of the vertical piece is detachably attached to the retaining wall, and the other side of the vertical piece is detachably attached to the back side portion of the retaining wall that is connected adjacent to the retaining wall. Retaining wall characterized by removable shelves to prevent falling.