JP3198162U - Retaining wall block - Google Patents

Abstract

The present invention provides a retaining wall block that is easy to lay foundation concrete and has excellent stability at the time of building stone. The retaining wall blocks 30a and 30b are formed such that a front structure portion 34a and a rear structure portion 34b are inclined at a predetermined angle with respect to the stacking direction, and an upper surface and a lower surface are substantially perpendicular to the stacking direction. Because it is formed in the direction, it is possible to build a retaining wall by laying stone on the foundation concrete with a flat upper surface. For this reason, formation of foundation concrete can be performed easily. Further, since the retaining wall blocks 30a and 30b can be built in a substantially horizontal state to build a retaining wall, the stability at the time of stone accumulation is high. For this reason, it is possible to omit or simplify the support members that support the retaining wall blocks 30a and 30b at the time of piling. [Selection] Figure 1

Description

  The present invention relates to a retaining wall block used for construction of a retaining wall.

  It is common practice to build retaining walls by building up retaining wall blocks on slopes that have been cut or embanked for purposes such as residential land development, road construction, and revetment. And regarding such a retaining wall block, [Patent Document 1] discloses an invention relating to a combination stacked block capable of smoothly constructing a curved retaining wall. The invention described in [Patent Document 1] includes a first retaining wall block constituted by slopes in which both side surfaces of the front structure portion and the rear structure portion constituting the retaining wall block narrow toward the back side, and the rear surface. A second retaining wall block composed of a slope extending toward the side, and the contact angle between the side surfaces of the first retaining wall block and the second retaining wall block is changed according to the curved surface. Thus, a curved retaining wall can be constructed smoothly.

Japanese Patent No. 2820629

  However, when the retaining wall is constructed with the conventional retaining wall block 10 as in the invention described in [Patent Document 1], as shown in FIG. 6, the foundation concrete 5 whose upper surface is inclined according to the angle of the retaining wall. There is a problem that the foundation concrete 5 cannot be formed with a simple formwork. In addition, in the conventional retaining wall block 10, a plurality of retaining wall blocks 10 are stacked obliquely for the construction of the retaining wall, so that the stone pile state is unstable and collapses unless supported by a support member such as an auxiliary metal fitting. There is a risk.

  This invention is made | formed in view of the said situation, and aims at providing the block for retaining walls which was easy to lay foundation concrete and was excellent in the stability at the time of piling.

The present invention
(1) A front structure portion 34a having a retaining wall surface 32, a back structure portion 34b provided at a predetermined interval from the front structure portion 34a, and a connection connecting the front structure portion 34a and the back structure portion 34b. Part 34c,
The first retaining wall block 30a formed of slopes 36a and 36b whose side surfaces of the front structure portion 34a and the back structure portion 34b narrow toward the back side, and the side surfaces of the front structure portion 34a and the back structure portion 34b are In the retaining wall block for constructing the retaining wall by alternately combining the second retaining wall blocks 30b composed of the slopes 38a and 38b extending toward the back side in the lateral direction and stacking upward.
By providing the retaining wall blocks 30a and 30b, the front structure portion 34a and the back structure portion 34b are formed to be inclined at a predetermined angle with respect to the stacking direction.
(2) The above-described problems are solved by providing the retaining wall blocks 30a and 30b according to (1) above, wherein the upper surface and the lower surface are formed in a direction substantially perpendicular to the stacking direction. .
(3) The front structure portion 34a and the back structure portion 34b are provided substantially in parallel, and the retaining wall blocks 30a and 30b have a substantially parallelogram shape in which the lower side protrudes forward in a side view. The problem is solved by providing the retaining wall blocks 30a and 30b described in (2) above.
(4) The retaining wall blocks 30a and 30b according to any one of the above (1) to (3), wherein an angle θ between the front structure portion 34a and the lower surface is 60 ° to 75 °. This solves the above problem.
(5) The connecting portion 34c is formed in a columnar shape to form a cavity portion 40 between the front structure portion 34a and the rear structure portion 34b, and a connecting hole 42 communicating with the cavity portion 40 is provided on the side surface of the connecting portion 34c. By providing the retaining wall blocks 30a, 30b according to any one of the above (1) to (4), the gaps of the retaining wall blocks 30a, 30b in the loaded state are all in communication. Solve the problem.

  In the retaining wall block according to the present invention, the front structure portion and the back structure portion are formed to be inclined at a predetermined angle with respect to the stacking direction, and the upper surface and the lower surface are formed in a direction substantially perpendicular to the stacking direction. Therefore, it is possible to build a retaining wall by laying stone on the foundation concrete with a flat upper surface. For this reason, formation of foundation concrete can be performed easily. In addition, the retaining wall block according to the present invention can be built by building stones in a substantially horizontal state, so that the stability when building stones is high, and the support member that supports the retaining wall block when building stones is provided. It can be omitted or simplified.

It is a figure which shows the block for 1st retaining walls which concerns on this invention, and the block for 2nd retaining walls. It is a schematic diagram which shows the combination state of the block for retaining walls which concerns on this invention. It is a schematic diagram which shows the combination state of the block for retaining walls which concerns on this invention. It is a schematic diagram of the retaining wall using the retaining wall block according to the present invention. It is a figure which shows the other example of the block for retaining walls which concerns on this invention. It is a schematic diagram of the retaining wall using the conventional retaining wall block.

  An embodiment of a retaining wall block 80 according to the present invention will be described with reference to the drawings. Here, FIGS. 1A, 1B, and 1C are a front view, a top view, and a side view of the first retaining wall block 30a according to the present invention, and FIGS. ), (F) are a front view, a top view, and a side view of the second retaining wall block 30b according to the present invention.

  The first retaining wall block 30a and the second retaining wall block 30b according to the present invention include a front structure portion 34a provided with a retaining wall surface 32, and a back surface provided at a predetermined interval from the front structure portion 34a. It has the structure part 34b, and the connection part 34c which connects these front structure parts 34a and the back surface structure part 34b. The first retaining wall block 30a is composed of slopes 36a and 36b whose side surfaces of the front structure portion 34a and the back structure portion 34b narrow toward the back surface side. The second retaining wall block 30b is composed of slopes 38a and 38b in which the side surfaces of the front structure portion 34a and the back structure portion 34b widen toward the back side. The first retaining wall block 30a and the second retaining wall block 30b shown in FIG. 1 are provided with a hollow portion 40 between the front structure portion 34a and the rear structure portion 34b with the connecting portion 34c as a column. Further, a connecting hole 42 connected to the cavity 40 is provided on the side surface of the connecting portion 34c. Due to the hollow portion 40 and the connecting hole 42, all the gaps of the retaining wall blocks 30a, 30b in the stacked state are communicated in the vertical and horizontal directions, and concrete is poured into the voids to solidify the retaining wall blocks 30a, 30b. It can be integrated in the state of stone.

  In addition, the retaining wall blocks 30a and 30b according to the present invention are such that the lower portions of the front structure portion 34a and the rear structure portion 34b protrude forward as shown in the side views of FIGS. 1 (c) and 1 (f). And inclined at a predetermined angle with respect to the vertical direction (stacking direction). Further, the upper and lower surfaces of the retaining wall blocks 30a and 30b are formed substantially perpendicular to the vertical direction (stacking direction), and the front structure portion 34a and the back structure portion 34b are provided substantially in parallel. Therefore, the retaining wall blocks 30a and 30b according to the present invention have a substantially parallelogram shape in which the lower part protrudes forward and the upper part protrudes rearward in a side view. In addition, as shown in FIG.1 (c), it is preferable that the angle (theta) which the front structure part 34a and the lower surface make is 60 degrees-75 degrees which are the inclination angles of a general retaining wall.

  The retaining wall blocks 30a and 30b according to the present invention are formed by arranging the first retaining wall block 30a and the second retaining wall block 30b in the lateral direction as shown in the schematic views of FIGS. Pile up alternately. At this time, the slope 36a of the first retaining wall block 30a and the slope 38a of the second retaining wall block 30b are combined with each other to form a smooth retaining wall surface. The first retaining wall block 30a and the second retaining wall block 30b are shown in FIGS. 2A and 2B by adjusting the overlapping positions of the slopes 36a and 36b and the slopes 38a and 38b. As described above, the length in the horizontal direction can be adjusted.

  Further, as shown in FIG. 3A, the contact angle between the slope 36a of the first retaining wall block 30a and the slope 38a of the second retaining wall block 30b is adjusted so that the front surface is concave. By arranging the blocks, a retaining wall curved in a concave shape can be formed. Conversely, the contact angle between the slopes 36a, 36b of the first retaining wall block 30a and the slopes 38a, 38b of the second retaining wall block 30b is such that the front surface is convex as shown in FIG. By arranging the blocks while adjusting the height, it is possible to form a retaining wall curved in a convex shape. As described above, the retaining wall blocks 30a and 30b according to the present invention smooth the curved retaining wall by changing the combination state of the first retaining wall block 30a and the second retaining wall block 30b. Can be formed. Further, the length in the horizontal direction can be adjusted.

  As shown in FIG. 3C, the retaining wall blocks 30a and 30b according to the present invention are combined with the retaining wall blocks 30a and 30b alternately in the horizontal direction and stacked in a predetermined number of stages. Build a wall. In addition, in FIG.3 (c), the 2nd retaining wall block 30b is shown with the oblique line.

  Next, FIG. 4 shows a schematic diagram of the retaining wall constructed by the retaining wall blocks 30a and 30b according to the present invention. Even when the retaining wall is constructed by the retaining wall blocks 30a and 30b, the foundation concrete 5 is formed on the foundation rubble 3 as in the conventional retaining wall. At this time, the retaining wall blocks 30a and 30b according to the present invention are formed such that the front structure portion 34a and the back structure portion 34b are inclined at a predetermined angle with respect to the stacking direction, and the upper surface and the lower surface are approximately the stacking direction. Since it is formed in a vertical direction, the retaining wall surface becomes an inclined surface having a predetermined angle θ by laying stones horizontally on the ground. For this reason, it is not necessary to form the upper surface of the foundation concrete 5 diagonally, and the foundation concrete 5 can be easily formed with a general formwork.

  In addition, the retaining wall blocks 30a and 30b are constructed by sequentially stacking the retaining wall blocks 30a and 30b in a substantially horizontal state on an upper surface substantially horizontal to the ground, so that the stability at the time of stone building is conventional. Is extremely high. For this reason, it is possible to omit or simplify the support members that support the retaining wall blocks 30a and 30b at the time of piling.

  When the retaining wall blocks 30a and 30b are stacked in a predetermined width, height, and curved state, concrete is poured into the hollow portions 40 and the connection holes 42 of the retaining wall blocks 30a and 30b, and the concrete is solidified. The retaining wall blocks 30a and 30b stacked in this way are integrated in a piled state. Also, before and after this, the retaining wall is constructed by filling the backing material 7 on the back side of the retaining wall blocks 30a and 30b and laying the top concrete 9.

  The retaining wall blocks 30a and 30b according to the present invention may have a shape as shown in FIG. 5 in addition to that shown in FIG. Here, FIG. 5A shows a short first retaining wall block 30a for width adjustment. 5B and 5C show a first retaining wall block 30a used for the side end of the retaining wall. Furthermore, the retaining wall blocks 30a and 30b according to the present invention may be configured to have a shorter depth dimension as shown in FIG.

  As described above, the retaining wall blocks 30a and 30b according to the present invention are formed such that the front structure portion 34a and the back structure portion 34b are inclined at a predetermined angle with respect to the stacking direction, and the upper surface and the lower surface are with respect to the stacking direction. Therefore, the retaining wall can be constructed by laying stones on the foundation concrete 5 having a flat upper surface. For this reason, formation of foundation concrete 5 can be performed easily. In addition, the retaining wall blocks 30a and 30b according to the present invention can build a retaining wall by piling in a substantially horizontal state, and therefore have high stability when piling. For this reason, it is possible to omit or simplify the support members that support the retaining wall blocks 30a and 30b at the time of piling.

  It should be noted that the configuration, shape, design, dimensions, etc. of each part of the retaining wall blocks 30a, 30b described above are merely examples, and the present invention is not limited to the above examples, and the present invention departs from the gist of the present invention. It is possible to change and implement within the range not to be.

30a First retaining wall block
30b Second retaining wall block
32 Retaining wall
34a Front structure part
34b Rear structure part
34c connecting part
36a, 36b (of the first retaining wall block)
38a, 38b (2nd retaining wall block) slope
40 cavity
42 Connecting hole

Claims (5)

A front structure portion having a retaining wall; a back structure portion provided at a predetermined interval from the front structure portion; and a connecting portion that connects the front structure portion and the back structure portion;
A first retaining wall block configured with slopes whose side surfaces of the front structure portion and the back structure portion narrow toward the back side; and slopes with side surfaces of the front structure portion and the back structure portion extending toward the back side. In the retaining wall block for constructing the retaining wall by alternately combining the second retaining wall block configured in the lateral direction and stacking upward.
The retaining wall block, wherein the front structure portion and the back structure portion are formed at a predetermined angle with respect to a stacking direction. The retaining wall block according to claim 1, wherein the upper surface and the lower surface are formed in a direction substantially perpendicular to the stacking direction. 3. The retaining wall according to claim 2, wherein the front structure portion and the rear structure portion are provided substantially in parallel, and the retaining wall block has a substantially parallelogram shape in which the lower portion protrudes forward in a side view. block. The retaining wall block according to any one of claims 1 to 3, wherein an angle formed by the front structure portion and the lower surface is 60 ° to 75 °. The connecting portion is formed in a column shape, a cavity is formed between the front structure portion and the back structure portion, and a connecting hole communicating with the cavity portion is provided on the side surface of the connecting portion, and the gap of the retaining wall block in the loaded state The retaining wall block according to any one of claims 1 to 4, characterized in that all of them communicate with each other.

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