JPH086111Y2 - Buttress type retaining wall foundation block - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a retaining wall type retaining wall foundation block.

[0002]

2. Description of the Related Art Conventionally, as one form of a retaining wall type retaining wall, a foundation block has been placed at a retaining wall construction site, and a retaining wall block has been built as a concrete product block on the foundation block. is there.

[0003]

However, in the case of the retaining wall type retaining wall described above, there are the following problems because the foundation block is cast on site in the field.

The foundation block needs to be made of reinforced concrete in order to secure high strength. For this reason, the reinforcing bars are assembled and processed on the site to arrange them, and then concrete is placed and molded. Reinforcing bar assembly and processing on-site took time and labor, and was a complicated task.

When constructing a retaining wall in the mountainous area, there are cases where the carry-in path is narrow and concrete cannot be carried in, and in some cases it is not possible to cast concrete for forming the foundation block on site.

[0006] Concrete is easily affected by weather conditions, and especially when performing on-site casting of concrete in cold regions, anti-freezing material is mixed into the concrete or it is heated by a heating device to prevent freezing. It was necessary to take measures.

When the concrete is cast in the highland on site, the concrete may be frozen unless the concrete is placed between 11:00 am and 2:00 pm. There was a problem that it was restricted by time.

[0008]

Therefore, according to the present invention, a foundation block portion installed at a retaining wall construction site, a front wall portion extending upwardly from a front end edge of the foundation block portion, and a front wall portion formed in the same manner are provided. A reinforcing bar insertion hole that is formed integrally with a buttress wall that extends rearward from the back of the wall along the upper surface of the foundation block and extends vertically from the upper end of the buttress wall to the lower end of the foundation block. It is intended to provide a retaining wall type foundation block for retaining walls.

[0009]

[Function] When constructing a retaining wall type retaining wall, first, a retaining wall type retaining wall foundation block is installed at a predetermined construction location, and a retaining wall block having retaining walls is stacked on the foundation block. The reinforcing bar insertion hole formed in the retaining wall part of the retaining wall block and the reinforcing bar insertion hole formed by vertically penetrating from the upper end of the retaining wall part of the foundation block to the lower end of the foundation block part are vertically connected. Then, the reinforcing bars are inserted into both the reinforcing bar insertion holes which are matched with each other, and mortar or concrete is placed in the both reinforcing bar insertion holes to securely fix the retaining wall block to the foundation block.

Next, another retaining wall block is stacked on the retaining wall block, the reinforcing rod insertion holes formed in each retaining wall are aligned with each other, and the reinforcing rods are inserted into both the reinforcing rod insertion holes, and the mortar or Cast concrete to fix the retaining wall blocks.

By stacking and fixing the retaining wall blocks in the required number of steps (requiring retaining wall height),
You can complete the construction of a strong buttress retaining wall.

At this time, the retaining wall type retaining wall foundation block forming the lowermost step of the retaining wall retaining wall is formed by integrally molding the foundation block which has been hitherto cast in situ as the foundation block portion together with the front wall portion and retaining portion. Therefore, it is no longer necessary to perform on-site casting of the basic block, which has conventionally required time and labor, and by simply bringing the buttress type retaining wall basic block manufactured at the factory to the site and installing it, It is possible to simultaneously perform the installation work of the foundation block for constructing the retaining wall and the stacking work of the bottom retaining wall block, and it is possible to significantly reduce the construction period. Moreover, since the foundation block portion, the front wall portion and the buttress wall portion are integrally molded, the earth pressure acting on the foundation block portion from above cancels the earth pressure acting on the front wall portion from behind. Therefore, the stability of the retaining wall can be improved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front side perspective view of a retaining wall Y constructed using a retaining wall foundation block A according to the present invention,
FIG. 2 is a rear side perspective view of the same. B is a long retaining wall block stacked on the basic block A, and C is a short retaining wall block.

As shown in FIGS. 3 to 6, the retaining wall type retaining wall foundation block A has a rectangular plate-shaped foundation block portion 1 to be installed at a retaining wall construction site and a portion above the front end edge of the foundation block portion 1. A rectangular plate-shaped front wall portion 2 extending upwardly and a pair of left and right retaining wall portions 3 extending rearward from the left and right side portions of the front wall portion 2 are integrally formed by reinforced concrete. Then, a pair of front and rear reinforcing bar insertion holes 4 and 4 penetrating in the vertical and vertical directions are formed in the base block portion 1 and both butting wall portions 3 and 3.

As shown in FIGS. 1 and 2, the long-width retaining wall block B is formed by extending a rectangular plate-shaped front wall portion 5 and rearward left and right side portions of the front wall portion 5 rearward. A pair of left and right buttress walls 6 and 6 are integrally formed of reinforced concrete, and a pair of front and rear reinforcing rod insertion holes 7 and 7 penetrating vertically in the buttress walls 6 and 6 are formed.

As shown in FIGS. 1 and 2, the short-width retaining wall block C has a rectangular plate-shaped front wall portion 8 and a retaining wall extending rearward from the center of the rear surface of the front wall portion 8. The wall portion 9 and the wall portion 9 are integrally formed by reinforced concrete, and a pair of front and rear reinforcing rod insertion holes 10, 10 are formed in the buttress wall portion 9 to vertically and vertically penetrate therethrough.

The retaining wall basic block A and the retaining wall block B having a long width are formed such that the front wall portions 2 and 5 have substantially the same vertical width, horizontal width and wall thickness. The vertical width, the horizontal width, and the wall thickness of the wall portions 3 and 6 are substantially the same, and the retaining wall block C having a short width has the vertical width and the wall thickness of the front wall portion 8 which are the same as the front wall of the basic block A. The vertical width and the wall thickness of the portion 2 are substantially the same, and the horizontal width of the front wall portion 8 is the same as that of the basic block A.
The front wall portion 2 is formed in approximately half of the front wall portion 2, and the retaining wall portion 9 is formed to have substantially the same vertical width, lateral width, and wall thickness as the retaining wall portion 3 of the basic block A.

Then, as shown in FIGS. 1 and 2, the long retaining wall blocks B are placed in a staggered manner on the basic block A, and the short retaining wall blocks C are placed at the ends. At this time, the buttress walls 3, 3
6, 9 are aligned vertically and vertically, and each buttress wall 3,
The reinforcing bar insertion holes 4, 7 and 10 formed in 6 and 9 are aligned vertically and vertically.

Next, a method of constructing a retaining wall Y using the retaining wall type retaining wall basic block A according to the present invention will be described with reference to FIGS. 7 and 8.

That is, when constructing the retaining wall type retaining wall Y, first, the retaining wall type retaining wall basic block A is installed at a predetermined construction place, and the retaining wall portions 6, 9 are provided on the basic block A. Retaining wall blocks B and C having the above are stacked and reinforcing bar insertion holes 7 and 10 formed in the retaining wall of the retaining wall blocks B and C.
And the reinforcing bar insertion hole 4 formed in the buttress 3 of the basic block A are matched in a vertically communicating state, and the reinforcing bar 11 is inserted into the matched reinforcing bar insertion holes 4, 7 and 10 and both reinforcing bars are inserted. Mortar 12 or concrete is placed in the holes 4, 7 and 10 to fix the retaining wall blocks B and C to the foundation block A.

Next, other retaining wall blocks B and C are stacked on the retaining wall blocks B and C, and the retaining wall portions 6 and 9 are formed.
Reinforcing bar insertion holes 7 and 10 formed in the above are matched, and reinforcing bar 11 is inserted into both reinforcing bar insertion holes 7 and 10, and mortar 12 or concrete is placed and the retaining wall blocks B and C are piled up.
To fix.

By stacking and fixing the retaining wall blocks B and C by the required number of steps (requiring retaining wall height), the construction of the retaining wall type retaining wall Y can be completed.

At this time, the retaining wall type retaining wall foundation block A forming the lowermost step of the retaining wall type retaining wall Y is a foundation block portion 1 which is the foundation block portion which has been hitherto cast in the field.
Since it is integrally molded together with the buttress wall section 3, it is no longer necessary to perform the on-site casting work of the foundation block, which has conventionally required time and effort, and the buttress type retaining wall foundation block A manufactured at the factory can be used on site. Just by loading it into the building and installing it, it is possible to simultaneously perform the work of installing the basic block for constructing the retaining wall and the work of stacking the bottom retaining wall block, which will greatly shorten the construction period. You can In FIG.
G is the road surface and M is the backfill.

FIG. 9 is a cross-sectional side view of a retaining wall Y according to another embodiment. As the retaining wall type retaining wall basic block A and retaining wall blocks B and C according to the present invention, they are respectively for lower layer arrangement. A large block, a medium block for arranging the intermediate layer, and a small block for arranging the upper layer are manufactured, and these blocks A, B, and C are stacked to form a large block (for example, a height of 10
The retaining wall Y of m) can be constructed. F is footing and D is top concrete.

In the retaining wall Y, since the retaining wall type retaining wall basic blocks A, A are arranged in the middle layer and the upper layer, respectively, the basic block parts 1, 1 of the basic blocks A, A are arranged.
1 will be arranged in the back embankment M in a shelf shape, and the earth pressure acting from above on the foundation block parts 1, 1 will be
Since the earth pressure acting on the front wall portions 2, 5, 8 of the blocks A, B, C from behind is offset, the stability of the retaining wall Y is improved.

Moreover, since the front and rear width of the base block part 1 of the buttress type retaining wall base block A installed at the lowermost stage can be formed to be short, the space for installing the base block part 1 is small. Therefore, it is possible to drastically reduce the time and labor required to scrape the back embankment M to secure the space for installing the foundation block before constructing the retaining wall Y.

[0028]

According to the present invention, the following effects can be obtained.

That is, since the retaining wall type retaining wall foundation block can be manufactured by performing quality control in a factory or the like like the retaining wall block, it can be manufactured as a high-quality prefabricated block suitable for the construction conditions on site. Can be brought in.

Since it is not necessary to perform the on-site casting work for placing the foundation block on the site, the rebar assembling / processing work, concrete placing work, and concrete loading work that have been conventionally performed are performed. It eliminates the need and eliminates all the problems they had.

Therefore, by using the retaining wall foundation block foundation block according to the present invention, the strength of the retaining wall and the like can be well secured, and the retaining wall is affected by weather conditions, construction site conditions and the like. Therefore, the construction period can be greatly shortened and the construction cost can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a front perspective view of a retaining wall constructed using a retaining wall type retaining wall foundation block according to the present invention.

FIG. 2 is a rear perspective view of the same.

FIG. 3 is a side view of a retaining wall type retaining wall foundation block.

[Figure 4] Rear view of the same

FIG. 5 is a plan view of the same.

6 is a cross-sectional view taken along the line I-I of FIG.

FIG. 7 is an explanatory diagram of construction of a retaining wall.

FIG. 8 is an explanatory sectional side view of a retaining wall.

FIG. 9 is a sectional side view of a retaining wall as another embodiment.

[Explanation of symbols]

 1 Foundation block part 2 Front wall part 3 Buttress part 4 Reinforcing bar insertion hole

Claims (1)

[Scope of utility model registration request] 1. A retaining wall and the foundation block unit be installed in a building site, a front wall portion which is extending form the rising shape upward from the front edge of the base block portion, the base block from the back of the front wall portion
It is integrally molded with the buttress wall that extends rearward along the upper surface of the part, and is located below the foundation block part from the upper end of the buttress wall part.
A retaining wall type retaining wall foundation block that has a reinforcing bar insertion hole that penetrates vertically and vertically to the end .