JPH0645477Y2 - Katsutome gutter - Google Patents

Description

[Detailed Description of the Invention] (A), Field of Industrial Application The present invention mainly relates to improvement of a relatively large precast soil retaining material (for example, a height of about 2 m to 7 m) for cutting soil.

(B) Conventional technology Conventionally, the soil retention with precast side gutters corresponding to cut soil is limited to those with a low soil retention height as shown in Fig. 4, and when the soil retention height becomes high, it becomes as shown in Fig. 5. The bottom slab was forced to project to the cut side.

This is to stabilize against fall and activity in the stability calculation, but the amount of excavation on the back side of the soil retention increases as the bottom slab extends to the cut soil side.

Therefore, the ground (12) slope =
Comparing the backside of each soil retention with a 1: 0.3 excavation line to 1: 1, the longer the bottom slab in the rearward direction, the greater the excavation amount.

Further, FIG. 8 shows an inverted L-shaped soil retaining plate that has been used conventionally, but if the bottom slab is horizontal, it is not safe to fall or slide unless the ratio of the soil retaining height and the length of the bottom slab are almost the same. Therefore, not to mention the increase in the amount of crushed foundation stone and foundation concrete,
The volume of the main body of Tochidome was also large.

(C), Problems to be Solved by the Invention The present invention does not expose the bottom slab, which is the above-mentioned drawback, to the back of the soil retaining
In addition, we have developed a single soil retaining gutter that shortens the length of the conventional inverted L type bottom slab and also has the function of a gutter for large soil retaining.
The purpose is to reduce costs and supply at low cost.

(D), Means for Solving the Problems Next, the configuration of the present invention will be described with reference to the drawings showing an embodiment.

In the precast retaining wall body (1), a reinforcing buttress (2) is provided on the vertical wall of the soil retaining side, a decorative pattern (9) is applied to the front surface of the vertical wall, and a drainage hole (1) for spring treatment on the rear surface of the vertical wall is provided.
0), and a grit (4) can be provided in front of the bottom part in the bottom plate (3) with an upsloping bottom plate (3), which is advantageous in calculation for fall and slip prevention. To form the installation base block (8) and pour on-site cast filling concrete (7),
A single-soil retaining gutter, which is reinforced so that it can also function as the gutter (4).

(E), Action and effect Normally, the retaining wall is L-shaped as shown in Fig. 7, and the bottom slab on which the backside soil is placed faces the cutting side and has an L-shaped shape. . This is the weight of the earth and sand placed on the bottom slab on the cutting side, and has a structure that can withstand the force (earth pressure) that pushes it out from the back side. It will increase and it is uneconomical. Therefore, the bottom plate is put out on the front side, not on the back side, but the model in this case is usually called the inverted L type (Fig. 8) in contrast to the L type mentioned above. As you can see in Fig.8, since there is no earth and sand on the bottom slab to withstand earth pressure, the weight of that is compensated for by the concrete of the bottom slab itself, and the bottom slab on the front side is longer than the bottom slab on the back side. And this also becomes uneconomical. Therefore, by making the bottom plate of the technology of the present application inclined up about 30 degrees,
The earth pressure that works in the horizontal direction and the weight of the retaining wall that works in the vertical direction
By receiving it on the bottom surface of the bottom slab with an upslope of about 30 degrees,
It is possible to receive the earth pressure and weight on an inclined surface to distribute the load, and especially it exhibits a strong resistance to sliding (force to slide to the front). As a result, the length can be shortened by about 40% compared to an inverted L-shaped retaining wall, and the volume of crushed stone, concrete foundation and concrete concrete can be reduced accordingly. Moreover, the gutters (4) can be formed by placing the filling concrete in conformity with the upper surface of the bottom slab having an upward slope. This gutter has a function of simultaneously draining the spring water on the rear surface coming out through the drainage hole (10) of the main body (1) and the road surface water from the roadway or sidewalk (11).

Further, since the installation base block (8) is adjusted to the angle of the inclined bottom plate, it can be installed easily and surely.

Therefore, according to the present invention, as shown in FIGS. 5, 6, and 7, the bottom slab is not exposed to the rear side of the soil retention, and the amount of cut soil is small, and it is not necessary to increase the length of the inverted L type bottom slab as shown in FIG. In addition, it is possible to reduce the cost because it is possible to combine the function of the gutter as shown in FIG.

[Brief description of drawings]

 Fig. 1 is a front perspective view of the present invention. Fig. 2 is a rear perspective view of the present invention. Fig. 3 is a right side view of the present invention. Fig. 4 is a side view of a conventional product (case-1). Fig. 5 is a conventional product. Fig. 6 is a side view of the conventional product (Case-3). Fig. 7 is a side view of the conventional product (Case-4). Fig. 8 is a side view of the conventional product (Case-5). 1; Body, 2; Reinforcement buttress 3; Bottom slab, 4; Gutter 5; Foundation concrete 6; Foundation crushed stone 7; Filled concrete or stuffed concrete 8; Installation foundation block, 9; Pattern 10; Drain hole 11; Roadway or sidewalk , 12;

Claims (1)

[Scope of utility model registration request] 1. In a precast retaining wall body (1), a reinforcing buttress (2) is provided on the vertical wall of the soil retaining side, a decorative pattern (9) is provided on the front surface of the vertical wall, and spring water for treating the rear surface of the vertical wall is provided. The bottom hole (10) is made to penetrate, and a bottom plate (3) with a skeletal upslope for preventing falling and sliding is formed in front of the bottom.
It is characterized in that it also has the function of the gutter (3) using the recessed depressions of the bottom slab (3) by synthesizing the installation foundation block (8) and placing the filling concrete (7) on site. One-sided gutter.