JPS6032212Y2 - boundary retaining wall - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a boundary retaining wall that is applied, for example, when constructing an earth retaining wall at the boundary between a road and a residential area with a difference in height.

Conventionally, concrete retaining walls, stone masonry, block masonry, etc. have been used as the above-mentioned boundary retaining walls, but even if the above-mentioned concrete retaining walls can be constructed vertically, it is not aesthetically pleasing and also has large steps. When constructing on site, concrete retaining walls, stone masonry, block masonry,
No matter which type of retaining wall a is used, appropriate methods must be applied in terms of structural mechanics.

Therefore, the larger the level difference H between the road facing the residential land C and the residential land C, the longer the separation distance 1 between the boundary line d and the residential land C.
As a result, the area available for residential use was reduced accordingly.

Therefore, the present invention is a new boundary retaining wall that has been developed as a result of studies taking into account the circumstances of the conventional retaining walls mentioned above. Even in locations where the residential area is considerably higher than the surface, the upper residential area can be fully utilized up to the boundary line, has enough structural strength to withstand earth pressure, and maintains its aesthetic appearance. There is a particular thing.

The present invention will be described in detail below with reference to the illustrated embodiment. As shown in FIGS. 2 and 3, the boundary retaining wall 1 is a plate-shaped curved wall 2 that is erected with the upper part curved greatly forward. , a plate-shaped bottom wall 4 having a drainage hole 3 extending forward from the lower part of the curved wall 2, and a height h higher than the height h of the curved wall from the bottom wall 4. ′ is sufficiently small, and a bowl portion 6 having a substantially concave side surface is provided at the lower part.
It is configured with the following.

That is, the curved wall 2 is integrally erected from the rear end edge of the horizontal bottom wall 4, and its substantially lower half 2a is formed vertically, and its upper half 2b is curved forward with a large curvature. , the top part 2c is formed so as to be curved to the vicinity of the boundary line 9 between the road 7 and the residential land 8.

On the other hand, the forward inclined wall 5 stands obliquely forward integrally from the front edge of the bottom wall 4, and is provided so that its front end coincides with the above-mentioned boundary line 9. The lower part of the curved wall 2, the bottom wall 4, and the forward inclined wall 5 form a concave groove shape.

In this case, the curved wall 2 has a concave groove 10 for drainage at the top 2c.
A water supply channel 11 is provided from the curved upper part to the vertical lower part to communicate the groove 10 and the pot part 6.

The water supply channel 11 is formed by providing a vertical groove 11a on the back surface of the free-standing wall 2, with its upper end communicating with the groove 10, and its lower end communicating with a small hole 11b formed through the lower part of the free-standing wall 2. Alternatively, a pipe llc is vertically installed along the front or back side of the free-standing wall 2, and its upper end communicates with the groove 10 and its lower end communicates with the pot 6.

In addition, this boundary retaining wall 1 includes a free-standing wall 2, a bottom wall 4, and a forward-sloping wall 5.
Reinforcing bars (not shown) are placed throughout the structure, and it is made of reinforced concrete that has sufficient mechanical strength.

Furthermore, this boundary retaining wall 1 can be produced in a factory as blocks with a width of 1 m to 2 m, for example, as shown in Fig. 2, and the blocks can be transported to the site and connected in the width direction using a conventional method, or It is also possible to construct by pouring concrete.

Incidentally, as shown in the figure, the side groove 12 may be formed integrally with the front end of the front inclined wall 5.

Therefore, regardless of whether the boundary retaining wall 1 is manufactured in a factory or cast on site, foundation stone chips 13 are laid as shown in Fig. 3 in order to distribute stress on the lower surface of the foundation and prevent uneven settlement. The bottom wall 4 and the front inclined wall 5 are grounded on this foundation slab 13, and
Between the back of the freestanding wall 2 and the ground 8a, there is chestnut stone waste 1 for collecting water.
4 is arranged and constructed as shown in the figure, and a pot 15 is placed in the pot 6 and a plant 16 is planted as shown in the figure.

Considering the earth pressure load applied to the boundary retaining wall 1 constructed as described above and the reaction force against the earth pressure load,
As shown in Fig. 4, if we consider the earth pressure distributed load as a concentrated load, the freestanding wall 2 will have a load E.

W □ is added, and the resultant force W acts on the bottom wall 4 and the forward inclined wall 5 as shown in the figure.

On the other hand, the contact surface of the boundary retaining wall 1 has a concave shape due to the above-mentioned horizontal bottom wall 4 and the front inclined wall 5 which stands obliquely forward from the front edge. Power P,
As shown in the figure, R acts in a direction opposing the resultant force W.

Therefore, even if earth pressure is applied as described above, the retaining wall 1 will
It is stable against that slippage.

As explained above, according to the boundary retaining wall according to the present invention, there is a plate-shaped freestanding wall 2 whose upper part is curved forward, and a drainage hole 3 extending forward from the lower part of the freestanding wall 2.・A plate-shaped bottom wall 4 having a shape of 1, and a plate-shaped forward-sloping wall 5 extending forward from the bottom wall 4 so that the height h' is lower than the height h of the free-standing wall 2. Since it has a pot part 6 with a generally concave shape on the lower part, if it is used as a retaining wall in a place where there is a step between a road 7 and a residential lot 8, for example, the free-standing wall 2
The top part 2c can be placed near the boundary line 9, making it possible to utilize the entire boundary line 9 of the expensive residential land 8, etc., and at the same time, trees can be planted in the pot part 6 provided along the road surface 7 at the bottom, which improves the aesthetic appearance. It is possible to improve the area and green the border.

In addition, since the contact surface is shaped so that the reaction force resists the resultant earth pressure force, the retaining wall 1 is stable against slippage and has stable strength from a structural mechanics perspective. can be secured.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view illustrating a conventional boundary retaining wall, Fig. 2 is a perspective view illustrating an embodiment of the boundary retaining wall as a block according to the present invention, and Fig. 3 is a longitudinal side view of the boundary retaining wall. Figure 4 is an explanatory diagram of the earth pressure and reaction force distribution of the boundary retaining wall. 2... Self-supporting wall, 2c... Top of free-standing wall, 3... Drain hole, 4... Bottom wall, 5...
・・・Forward leaning wall, 6... Pot part, 10...
- Concave groove, 11... Water supply channel, h... Height of free standing wall, h'... Height of forward leaning wall.

Claims (2)

[Scope of utility model registration request] (1) A plate-shaped curved wall whose upper part is curved forward; a plate-shaped bottom wall having a drainage hole extending forward from the bottom of the curved wall; The boundary retaining wall is provided with a plate-shaped forward inclined wall that extends so as to be lower, and forms a pot portion with a generally concave shape on the side at the lower part. (2) A boundary structure according to claim 1 of the utility model registration claim, wherein the curved wall has a concave groove at its top and a water supply channel located in the wall and communicating the concave groove and the pot part. wall.