JPH0742708B2 - Structure of retaining block and method of constructing retaining wall using the retaining block - Google Patents

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete fastening block used for a retaining wall that covers a slope to prevent the slope from collapsing and stabilizes the slope, and further uses the fastening block. Further, the present invention relates to a method of constructing a retaining wall that has planting on a slope and at the same time improves workability of the construction.

[0002]

2. Description of the Related Art Retaining walls in which a large number of concrete method retaining blocks are spread over the slope to prevent the slope from collapsing and to stabilize the slope are conventionally known. In many cases, the retaining wall that has been generally installed conventionally covers the slope completely with a concrete fastening block, and only the concrete fastening block is visible. However, the functions of the retaining wall are to prevent the slope from collapsing and to stabilize it, to maintain the aesthetics and landscape, to preserve the environment,
Nowadays, it is requested to match the environment,
There is a growing demand for construction of retaining walls that leave some greenery such as vegetation. Hereinafter, this will be referred to as a green retaining wall.

As shown in FIG. 9, a conventional green retaining wall is constructed by laying a large number of cross-shaped retaining blocks 1 on a slope.
The most common method is to plant a space between the cross-shaped frame bodies as 2 and plant a green plant there to form a green retaining wall.
However, in the case where the cross-shaped shackle block 1 is spread to form a green retaining wall, the planting 2 itself is a slope, which makes it inconvenient to plant a plant in the planting 2 and the area of the planting 2 Is large, the implant 2 may be partially collapsed. For this reason, the area of the implant 2 cannot be increased, and a large number of small legally fastening blocks 1 must be arranged adjacent to each other. For this reason, in addition to the high manufacturing cost and transportation cost of the legal stop block 1, it takes time and labor for construction, resulting in extremely high cost as a whole.

In order to improve the drawbacks of the above-mentioned cruciform fastening block, as shown in FIG. 10, a concrete wall 3 is arranged on a slope and fixed by an anchor 4, and the concrete wall 3 is formed. There is also proposed a green retaining wall in which the concrete step panel 5 is fitted into the fitting hole while inclining, and is embedded in the V-shaped volume space formed by the concrete wall 3 and the concrete step panel 5 (or the slope) to make the planting 6. .

[0005]

However, the above-mentioned FIG.
The green retaining wall having the conventionally known planting 6 shown in FIG. 6 formed on the slope has the following problems. First, because the volume space forming the planting 6 is V-shaped (or at least the bottom of one side is a slope), rooting of the plant is hindered and large plants, rooted plants, etc. are planted. There are difficulties. Further, since the concrete wall 3 and the concrete step panel 5 are both provided so as to be inclined, the workability of the installation work is not good. Further, when the concrete wall 3 and the concrete step panel 5 are heavy objects having a large weight, a large machine such as a crane is required to install them, and when they are stacked higher, scaffolding is also required. High cost. Further, since the concrete step panel 5 arranged above the plant 6 partially covers the space above the plant 6, the height of the plant planted in the plant 6 is limited, and the type of plant planted is restricted. At the same time, the planting work was hindered. Furthermore, since it is necessary to embed the stepped panel 5 and then embed it in the planting 6, the sloped ground soil is temporarily stored and then excavated and excavated, which improves the workability of the retaining wall. Absent. In addition, if the slope is a curved line in the horizontal direction, it must be ground to form a flat surface in the horizontal direction, and a retaining wall along the curved line must be installed on the slope that is a curved line in the horizontal direction. It was impossible to do.

Therefore, an object of the present invention is to improve the above-mentioned drawbacks, to improve workability of construction, and to improve the degree of freedom in selecting a plant to be planted. To provide a wall construction method.

[0007]

A feature of the present invention is that a horizontal bottom wall, a vertical wall that rises vertically from an end of the horizontal bottom wall, and a sloped portion provided on the front surface of the vertical wall. , An anchor hole provided in the slope, an arc portion formed at both ends of the vertical wall, a slit formed in the vertical middle of the arc portion, and both ends of the vertical wall provided with the slit In the structure of the fixed block consisting of the rotating shaft member provided in the section, and further,
The vertical wall is divided into a lower vertical wall and an upper vertical wall, which are divided into upper and lower parts, and the lower vertical wall and the upper vertical wall are connected to each other.

Another feature of the present invention is that the fixing blocks are connected to each other on the left and right sides, and the connecting fittings fitted in the slits are inserted into a shaft so as to be freely rotatable. It is in the place where it is bent and installed along the lateral curve.

Further, a feature of the present invention is that the slope is ground with an excavator, and the ground sand is ground and buried on the back surface of the bottom retaining block of the lower stage which has already been leveled. Level the planting consisting of a horizontal plane for installing the retaining block, then provide a concrete platform which is a horizontal platform for placing the legal retaining block on the horizontal plane planting, and then, in the lower stage The platform is lifted by a crane for installation, and then an anchor placing device is placed on the platform, and the anchor is placed in the soil on the upper slope by the anchor placing device to fix the anchor. , A horizontal fastening block having a horizontal bottom wall and a vertical wall rising from an end of the horizontal bottom wall is placed on the concrete platform, and the fastening block is fixed by the anchor. Constant and, in the place where the construction of the retaining wall and repeat the above work.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. 1 is a sectional view of a green retaining wall showing an embodiment of the present invention, FIG. 2 is a perspective view of a retaining block used for the green retaining wall of FIG. 1, and FIG. 3 is a retaining block of FIG. FIG. 4 is a cross-sectional view showing an example of a connection structure of the lateral fastening blocks in the lateral direction of FIG. 3, and FIG. 5 is a lateral direction of FIG. FIG. 6 is a cross-sectional view showing another example of the connection structure of the legal stop block, and FIG. 6 is a partial sectional view showing a coupling structure of the upper vertical wall and the lower vertical wall of the legal stop block of FIG.

With reference to FIG. 1, the green retaining wall of the present invention is one in which a slope K is shaved to form a horizontal planting 11 step by step, and each of the horizontal planting 11 formed by scraping the slope K is formed. Stitching blocks 14 having a vertical wall 12 and a horizontal bottom wall 13 are connected to the left and right in a row. The anchor block 14 is fixed in the soil on the slope K by an anchor 15. A predetermined plant G is planted in the planting 11 so as not to spoil the aesthetics and landscape.

With reference to FIG. 2, the legal stop block 14 is
A trapezoidal horizontal bottom wall 13 which is tapered as it extends forward, and a vertical wall 12 whose horizontal cross section (or vertical cross section) is substantially trapezoidal and whose thickness is ensured.
It consists of On the front surface of the vertical wall 12, a slope portion 16 for fixing the end portion of the anchor 15 is formed. The sloped portion 16 is formed so as to project forward from a substantially central position of the vertical wall 12, and an anchor hole 15A through which the anchor 15 of FIG. 1 is formed is formed in the center of the sloped portion 16. The shape of the horizontal bottom wall 13 is
The shape of the horizontal bottom wall 13 of the present invention is not limited to the trapezoidal shape as long as it can be bent and connected, and is, for example, a square or inverted shape. It may be trapezoidal.

Since the retaining block 14 is made of precast concrete, it is transported after being manufactured at the factory, so it cannot be transported depending on its size.
Alternatively, transportation costs may be extremely high. Therefore, in this embodiment, the vertical wall 12 is placed above and below the upper vertical wall 12A and the lower vertical wall 12B.
The structure is divided into individual pieces and these are combined at the construction site.

That is, the connecting structure of the upper vertical wall 12A and the lower vertical wall 12B is as follows. With reference to FIG. 6 in addition to FIG. 2, a fastener 18 is fixedly installed inside a set bolt hole 17 formed at the abutting ends of the upper vertical wall 12A and the lower vertical wall 12B. The top and bottom 2
The upper vertical wall 1 is fixed by tightening and fixing the individual fasteners 18 with the fastening bolts 19 and the nuts 20.
2A and lower vertical wall 12B are joined together. The stopper 18 is welded and fixed to an anchor bar 21 which is embedded in the upper vertical wall 12A and the lower vertical wall 12B and also serves as a reinforcing bar.

In this embodiment, the hole 17 for the stop bolt is used.
2 are provided on the front surface of the vertical wall 12 and 4 are provided on the rear surface thereof, but the number thereof is determined from the viewpoint of strength, and the number of holes for the fixing bolt of the present invention is limited to the illustrated embodiment. Not a thing.

The fixing bolt hole 17 is closed by fixing the upper and lower stoppers 18 with the stopper bolt 19 and then filling with a filler such as mortar.

With reference to FIGS. 2, 3, 4, and 5, the fastening blocks 14 disposed on the left and right sides are arranged so as to be laterally connected to each other, and for this reason, the vertical walls are arranged. The left and right ends of 12 form an arcuate portion R (see FIG. 2) and are in line contact with each other.

A rotary shaft member 25 is embedded in the upper surfaces of the right and left ends of the vertical wall 12. The rotary shaft member 25 is inserted into the insertion hole of the connecting fitting 22A and fixed by the lock nut 27 to connect the left and right fastening blocks 14 to each other. As a result, the left and right fastening blocks 14 are rotatably connected to each other (bent at the connecting portion).

Further, in the case where the vertical wall 12A is divided into the upper vertical wall 12A and the lower vertical wall 12B, the connecting metal fitting 22B is inserted in the connecting portion thereof, and in the case of the vertical wall having an integral structure, the connecting metal fitting 22B is inserted. Slits 23 are formed. A rotary shaft member 24 is embedded in the lower vertical wall 12B having the slit 23 formed therein.
The rotary shaft member 24 may be embedded in the upper vertical wall 12A. The connecting fitting 22B is for connecting the left and right fastening blocks 14, and the rotary shaft member 24 is inserted through both ends of the connecting fitting 22B and is fixed by a lock nut 26. As a result, the left and right fastening blocks 14
Are rotatably connected to each other (foldable at the connecting portion).

In this embodiment, the rotary shaft member is an embedded bolt,
Although a lock nut is used as the fixing member, in addition to this, a structure in which a nut is embedded as a rotary shaft member and a connecting fitting is fixed by using a bolt as the fixing member, and other pin couplings are also included in the embodiments of the present invention. The connection structure by the connection fittings of the present invention is sufficient as long as it is a structure for rotatably connecting the left and right fastening blocks, and is not limited to the above embodiment. This connection fitting 22
The connection structure of A and 22B allows the left and right fastening blocks 14 to follow along the left and right curves of the slope as shown in FIG.

If sufficient connection strength can be obtained only with the connecting fittings 22B in the slits 23, the rotary shaft members 25 and the connecting fittings 22A provided on the left and right ends of the upper surface of the vertical wall 12 are connected. The lock nut 27 can be omitted.

The legal stop block described above is one embodiment of the present invention, and the present invention is not limited to the structure of the legal stop block having the above-mentioned configuration.

FIG. 7 is a perspective view showing a fastening block according to another embodiment of the present invention. In this embodiment, the vertical wall 31 has a flat plate shape, and a substantially trapezoidal protrusion 32 is formed in the center thereof. Recessed hole 3 in protrusion 32
3 is formed, and a slope portion 34 is formed inside the concave hole 33. The slope portion 34 is where the anchor is stopped as in the embodiment of FIG. Also in this embodiment, the vertical wall 31 is divided into an upper vertical wall 31A and a lower vertical wall 31B. The other structure is the same as that of the embodiment shown in FIGS.

In this embodiment, the vertical wall 31 is lighter because it has a flat plate shape which is thinner than that of the embodiment shown in FIG. 2, and it is convenient for transportation. 7 is inferior to that of the embodiment of FIG. 7, when the strength as a retaining wall is required, the structure of the embodiment of FIG. 2 is adopted, and when the strength is not so required, the structure of FIG.
The embodiment of the present invention will be adopted.

In the above description, the vertical wall has a structure in which the vertical wall is divided into two parts, but this is in consideration of the case where the legal stop block becomes large and the transportation becomes difficult. Is not necessarily limited to dividing the vertical wall into two. For example, the vertical wall may be integrated as long as there is no obstacle in transportation. In this case, a slit is provided in the vicinity of the middle of the vertical wall, and the left and right fastening blocks are connected by connecting metal fittings.
The present invention also includes that the vertical wall is divided into three or more parts depending on the weight.

Next, a method of constructing a green retaining wall using the retaining block according to the present invention will be described with reference to FIG. First, the operation of installing the upper legal stop block in the state where the lower legal stop block is already installed will be described.

In the state shown in FIG. 8A, the lower retaining block 42 is installed, and in this state, the excavator 41 scrapes the upper slope K to remove the scraped sand. The space 43 (upper stage) on the back side of the installed retaining block 42 is filled with embankment. This eliminates the waste of the earth and sand obtained by cutting the slope K,
By performing the embankment work at the same time as the shaving work of the slope K, the work efficiency is improved. By this operation, a horizontal surface 44 for installing the upper stapling block is formed.

Next, as shown in FIG. 6B, the horizontal plane 4
4 is slightly excavated and leveled, and a concrete mounting table 45, which is a horizontal table for mounting the bank block, is placed. It should be noted that the concrete placing table 45 may be of a structure in which a precast one is installed. In this case, the precast concrete placing table 45 is firmly installed so as not to move or shift during the work of installing the retaining block.

Subsequently, as shown in FIG. 6 (C), a pedestal 47 and a crane 48 are mounted on the lower-level planting 46 which has already been leveled.
Install by hanging up.

Next, as shown in FIG. 6 (D), an anchor driving device 49 is placed on the frame 47, and the anchor 50 is driven into the soil on the slope K by the anchor driving device 49. At the same time, pour concrete and anchor 5
Fix 0 in the soil.

Finally, as shown in FIG. 6 (E), the fastening block 42 is placed on the concrete platform 45 and fixed by the anchor 50.

After the work shown in FIG. 6 (E), the process shown in FIG. 6 (A) is returned to and repeated to construct the green retaining wall.

[0033]

As described above, according to the present invention, the following effects can be obtained. The shape of the natural slope does not change, and the slope can be stabilized without harming the natural environment or landscape. Also, since each step can be carried out on a horizontal surface, a small working machine can be placed on the horizontal surface for use, and there is no need to assemble a large machine such as a crane or scaffolding, and the construction speed is fast. The workability is improved.
Further, this can reduce the working cost. Since a large machine such as a crane for suspending blocks is not required and the work is performed on a horizontal plane, the safety of the work is ensured. Further, since the volume space for forming the plant is box-shaped, it is possible to plant large plants, root-bearing plants, etc. without hindering rooting of plants. Further, since the legal block block has a structure that can stand on its own, workability of installation work is improved. Furthermore, since there is nothing that obstructs the space above the planting, there is no restriction on the height of the plants planted in the planting, and there is no restriction on the type of plants planted. In addition, planting work can be easily performed. Furthermore, while excavating the slope with a shovel, the scraped soil can be directly embeded in the lower planting, which improves the workability of the retaining wall. Further, even when the slope is curved in the lateral direction, the retaining block can be installed along the curve.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a green retaining wall showing an embodiment of the present invention.

FIG. 2 is a perspective view of a retaining block used in the green retaining wall of FIG. 1.

FIG. 3 is a plan view of a case in which the dead-end blocks of FIG. 2 are continuously arranged along a laterally curved slope.

FIG. 4 is a cross-sectional view showing an example of a connecting structure of the lateral fastening blocks shown in FIG.

5 is a cross-sectional view showing another example of the connection structure of the lateral fastening blocks shown in FIG.

FIG. 6 is a partial cross-sectional view showing a connection structure of an upper vertical wall and a lower vertical wall of the fastening block of FIG.

FIG. 7 is a perspective view of a retaining block showing another embodiment of the present invention.

8 (A) to 8 (E) are schematic diagrams illustrating a method of constructing a green retaining wall using the retaining block of the present invention.

FIG. 9 is a perspective view showing an example of a conventionally known retaining wall.

FIG. 10 is a cross-sectional view showing a conventionally known green retaining wall.

[Explanation of symbols]

 11 Implantation 12 Vertical Wall 12A Upper Vertical Wall 12B Lower Vertical Wall 13 Horizontal Bottom Wall 14 Horizontal Bottom Wall 14 Fastening Block 15 Anchor 15A Hole for Anchor 16 Slope Area 17 Hole for Fixing Bolt 18 Fastening Bracket 19 Stop Bolt 20 Washer 21 Anchor Muscle 22A Connecting Metal Fitting 22B Connecting bracket 23 Slit 24 Rotating shaft member 25 Rotating shaft member 26 Nut 27 Nut 31 Vertical wall 31A Upper vertical wall 31B Lower vertical wall 32 Protrusion 33 Recessed hole 34 Slope 41 41 Shovel 42 Lock block 43 Space 44 Horizontal surface 45 Concrete mounting table 46 Implantation 47 Frame 48 Crane 49 Anchor Placing Device 50 Anchor K Slope G Plant R Arc Part

Claims (8)

[Claims] 1. A horizontal bottom wall, a vertical wall that rises vertically from the end of the horizontal bottom wall, a sloped portion provided on the front surface of the vertical wall, and an anchor hole provided in the sloped portion. Arc parts formed on both ends of the vertical wall,
A structure of a fastening block, comprising a slit formed in the middle of the arc portion in the vertical direction, and a rotary shaft member provided at both ends of a vertical wall provided with the slit. 2. The structure of the fastening block according to claim 1, wherein the horizontal bottom wall has a trapezoidal shape which is tapered as it extends forward. 3. The structure of the fastening block according to claim 1, wherein a rotary shaft member is provided at the upper ends of both ends of the vertical wall. 4. The method according to claim 1, wherein the vertical wall is divided into two parts, a lower vertical wall and an upper vertical wall, and the lower vertical wall and the upper vertical wall are connected to each other. Block structure. 5. The vertical wall is divided into two parts, a lower vertical wall and an upper vertical wall, at upper and lower parts at a slit position, and the lower vertical wall and the upper vertical wall are connected to each other. The structure of the lock block described. 6. A horizontal bottom wall, a vertical wall rising vertically from the end of the horizontal bottom wall, a sloped portion provided on the front surface of the vertical wall, and an anchor hole provided in the sloped portion. Arc parts formed on both ends of the vertical wall,
Slits formed in the middle of the arcuate portion in the vertical direction, and rotary shaft members provided at both ends of the vertical portion wall provided with the slits are provided on the left and right in a continuous manner to the slits. A structure of a legal-fastening block, characterized in that the fitted coupling fittings are rotatably inserted through a rotary shaft member, and the legal-fastening blocks continuously provided on the left and right are bent and installed along a lateral curve. 7. A horizontal bottom wall, a vertical wall rising vertically from an end of the horizontal bottom wall, a sloped portion provided on the front surface of the vertical wall, and an anchor hole provided on the sloped portion. Arc parts formed on both ends of the vertical wall,
A slit formed in the middle of the arc portion in the vertical direction, a rotary shaft member provided at both ends of the vertical wall provided with the slit, and a rotary shaft member provided on upper surfaces of both ends of the vertical wall. And the left and right fastening blocks are continuously connected to each other, and the connecting fittings fitted in the slits are rotatably inserted into the rotary shaft member, and are connected to the rotary shaft members provided on the upper surfaces of both ends of the vertical wall. The structure of the legal stop block is characterized in that the metal fittings are rotatably inserted, and the legal stop blocks connected to the left and right are bent and installed along a lateral curve. 8. A sloped surface is excavated by a shovel, and the scraped earth and sand is filled and buried on the back surface of the already-fixed lower-step retaining block, thereby forming a horizontal surface for installing the upper-stage retaining block. The planting is leveled, and then a concrete platform, which is a horizontal platform for mounting the law-stop block on the horizontal plane planting, is installed, and then the platform is hung by a crane and installed in the lower planting. Next, an anchor placing device is placed on the gantry, the anchor is driven into the soil on the upper slope by the anchor placing device to fix the anchor, and the horizontal bottom wall and the horizontal bottom wall are fixed. A fastening block having a vertical wall rising from the end is placed on the concrete platform, the fastening block is fixed by the anchor, and the above operation is repeated to hold the retaining wall. Retaining wall method of construction, characterized in that the construction be. [0001]