JP2014029100A - Retaining wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a retaining wall structure which has a large cost reduction effect by using relatively light-weighted retaining wall blocks without causing the retaining wall structure to be massive and utilizing construction or industrial waste without using a large amount of crushed or rubble stones.SOLUTION: A retaining wall structure which is constructed by layering retaining wall blocks on a foundation ground comprises: retaining wall blocks which have front walls and leg members connected to rear faces thereof and extended posterior thereto; sandbag blocks which are arranged on the leg members at the rear face side of the front walls; and infilling materials which are filled in peripheral spaces of the sandbag blocks surrounded by the sandbag blocks, the retaining wall blocks and a slope.

Description

  The present invention relates to a retaining wall structure used for construction of a retaining wall or a revetment for road construction, river construction, and residential land development construction.

As an example of such a retaining wall structure, there is a prior art related to a structure constructed by stacking blocks 32 on a foundation portion disposed on a foundation ground. (See Patent Document 1)
The prior art stacking block 32 includes a front wall 33 and a rear wall 34, and a connecting body (left and right side walls 35, 36) connecting the front and rear walls 33, 34, and is open in the vertical direction. The rear wall 34 is set to a height less than half that of the front wall 33. A sliding resistor 40 is laid across the upper portions of the left and right walls 35 and 36.

  A sliding resistor 40 is arranged at the upper and lower boundary surface positions of the respective steps formed by stacking the blocks so as to straddle the lower block side and the upper block side, and the lower block and the front wall 33 of the lower block. The space formed between the sliding resistor 40 on the side is filled with a constraining layer forming material (carrying material 31: crushed stone, chestnut, etc.) to form a lower front constraining layer. A constraining layer forming material (backing material 17) is formed in a space formed between the sliding resistor 40 on the lower block side and the rear wall of the lower block or the slope formed behind the structure. Filling to form a rear constraining layer on the lower side.

In addition, a space formed between the front wall 33 of the upper block and the portion of the sliding resistor 40 on the upper block side is filled with a constraining layer forming material (bore material 31: crushed stone, chestnut stone, etc.). The front-side constraining layer is formed, and a constraining layer forming material (cylinder 31: in the space formed between the portion of the sliding resistor 40 on the upper-stage block side and the rear wall 34 of the upper-stage block is formed. Crushed stones, chestnuts, etc.) to form a rear constraining layer on the upper side, and the upper and lower front constraining layers are continued in the vertical direction at the upper and lower boundary positions of each step, and the upper and lower tiers By causing the rear constraining layer to continue in the up-down direction, the front constraining layer continuous in the up-down direction and the rear constraining layer continuous in the up-down direction exert a reaction force (passive force) via the sliding resistor 40. The upper and lower sides of the retaining wall block with enhanced sliding resistance at the upper and lower boundary surfaces Retaining wall structure with boundary structure.

JP 2011-202499 A

  In the retaining wall structure of the invention disclosed in Patent Document 1, the front wall 33, the rear wall 34, the connecting body (left / right side walls 35, 36) connecting the both front / rear walls 33, 34, and the left / right side The retaining wall block made of the sliding resistor 40 disposed between the upper portions of the walls 35 and 36 is bulky and heavy, so that the unit price of the retaining wall block is expensive, and the retaining wall construction is performed at the retaining wall construction site. There was a problem that the nature was bad.

  Further, in the retaining wall structure of the invention disclosed in Patent Document 1, the body material 31 and the back wall are embedded in the space formed inside the retaining wall block and the space between the retaining wall block and the slope. Since it is necessary to fill the material 17, a large amount of crushed stones and chestnuts are required, and it is necessary to fill a large amount of crushed stones and chestnuts at the retaining wall construction site. there were.

The present invention has been made in view of the problems associated with the prior art, is not bulky, uses a relatively lightweight retaining wall block, does not use a large amount of crushed stones, chestnuts, etc. An object of the present invention is to provide a retaining wall structure that effectively uses waste and has a large cost reduction effect.

  In order to solve the above-described problem, in the invention according to the first aspect, the retaining wall structure is constructed by stacking retaining wall blocks on the foundation ground, and is connected to the front wall and the back surface of the front wall. A retaining wall block composed of a leg member extending rearward of the front wall; a sandbag block on the back side of the front wall, disposed on the leg member; and an outer peripheral space of the sandbag block, the sandbag block The retaining wall structure is composed of the retaining wall block and the filling material filled in the space defined by the slope.

  In the invention according to the second aspect, in the retaining wall structure of the invention according to the first aspect, one or a plurality of girder members extending vertically along the front wall are integrally formed on the rear surface of the front wall of the retaining wall block. The number of leg members is the same as the number of girder members, and one end of the leg member is connected to the lower part of the girder member.

  In the invention according to the third aspect, in the retaining wall structure of the invention according to the first or second aspect, the sandbag block has a retaining wall structure configured to be connected to the front wall or the girder member.

  In the invention according to the fourth aspect, in the retaining wall structure of the invention according to any one of the first to third aspects, the sandbag block has a retaining wall structure configured by one or a plurality of square sandbag blocks. .

  In the invention according to the fifth aspect, in the retaining wall structure of the invention according to any one of the first to fourth aspects, the retaining ground structure in which the foundation ground is composed of a reinforced ground in which a plurality of top-type blocks are embedded. It was.

  In the invention according to the sixth aspect, the retaining wall structure is constructed by stacking retaining wall surface structures on the foundation ground, and is connected to the front wall and the lower back surface of the front wall and extends rearward of the front wall. A bottom wall, a retaining wall wall structure composed of a front wall and a connecting member that connects the bottom wall, a sandbag block disposed on the bottom wall on the back side of the front wall, and an outer periphery of the sandbag block The retaining wall structure is composed of a sandbag block, a retaining wall surface structure, and a filling material filled in the space defined by the slope.

  In the invention according to the seventh aspect, in the retaining wall structure of the invention according to the sixth aspect, the sandbag block has a retaining wall structure constituted by one or a plurality of square sandbag blocks.

In the invention according to the eighth aspect, in the retaining wall structure of the invention according to the sixth or seventh aspect, the foundation ground is a retaining wall structure composed of reinforced ground in which a plurality of top-of-the-line blocks are embedded.

  According to the present invention, the retaining wall block composed of the front wall and the leg member connected to the back surface of the front wall and extending to the rear of the front wall, or the front wall and the back surface of the front wall connected to the lower back surface of the front wall. Because the retaining wall structure uses the retaining wall structure that consists of the extending bottom wall and the connecting member that connects the front and bottom walls, the shape of the retaining wall block or retaining wall structure can be simplified. Since the bulk can be reduced and the weight can be reduced, it is possible to reduce the cost of the retaining wall block or retaining wall surface structure and improve the workability at the retaining wall construction site.

According to the present invention, the sandbag block is disposed in a space defined by the front wall and the slope of the retaining wall block, and the outer space of the sandbag block or the retaining wall wall structure, Because the retaining wall structure is configured to fill the space defined by the retaining wall block or the retaining wall surface structure and the slope with the filling material, it is possible to reduce the filling material consisting of crushed stones and chestnuts, Since the sandbag block can be filled with civil engineering waste and industrial waste, etc., it will lead to effective use of civil engineering waste and industrial waste, etc., aiming to reduce the cost of filling materials and improve workability at the retaining wall construction site be able to.
Moreover, since it is set as the structure which arrange | positions the filling material which consists of a crushed stone, a chestnut stone, etc. in the outer periphery of a sandbag block, draining is easy and, as a result, the intensity | strength improvement of a retaining wall structure can be aimed at.

FIG. 1 shows a bird's-eye view of a retaining wall block and a sandbag block according to the present invention, and FIG. 1 (A) shows a state in which the retaining wall block and the sandbag block are combined, and FIG. ) Shows a retaining wall block alone, and FIG. 1 (C) shows a sandbag block alone. FIG. 2 shows a sectional view of the retaining wall structure according to the first embodiment of the present invention. FIG. 3 shows a bird's-eye view of a retaining wall block and a sandbag block according to another embodiment of the present invention, and FIG. 3 (A) shows a state in which the retaining wall block and the sandbag block are combined. 3 (B) shows a retaining wall block alone, and FIG. 3 (C) shows a sandbag block alone. FIG. 4 is a sectional view of a retaining wall structure according to another embodiment of the present invention, showing a sectional view of the retaining wall structure using a retaining wall block provided with a positioning member. FIG. 5 is a cross-sectional view of a retaining wall structure according to another embodiment of the present invention, showing a retaining wall structure in which the foundation ground is reinforced by embedding a plurality of top-of-the-line blocks in the foundation ground. It is. FIG. 6 is a cross-sectional view of a retaining wall structure according to another embodiment of the present invention, showing a retaining wall structure in which a plurality of sandbag blocks are arranged between a retaining wall block and a slope. FIG. 7 shows a bird's-eye view of a retaining wall surface structure and a sandbag block according to another embodiment of the present invention, and FIG. 7 (A) shows a state where the retaining wall surface structure and the sandbag block are combined. FIG. 7B shows a single retaining wall wall structure, and FIG. 7C shows a sandbag block alone. FIG. 8 is a sectional view of a retaining wall structure according to another embodiment of the present invention, showing a sectional view of a retaining wall structure using a retaining wall surface structure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a bird's-eye view of a retaining wall block 10 and a sandbag block 20 according to the present invention. FIG. 1 (A) shows a state in which the retaining wall block 10 and the sandbag block 20 are combined, FIG. 1 (B) shows the retaining wall block 10 alone, and FIG. 1 (C) shows the sandbag. A block 20 alone is shown.

  The retaining wall block 10 is made of concrete and includes a front wall 11, a leg member 12, and a girder member 13. The girder member 13 integrated with the front wall 11 extends from the upper end to the lower end of the front wall 11 at two places on both sides of the back surface of the front wall 11, and the leg member 12 is connected to each of the girder members 13. It extends toward the rear of the front wall 11 from the lower end. In the embodiment shown in FIG. 1, the lower end surface of the leg member 12 and the surface of the front wall 11 are perpendicular to each other. Further, the front wall 11 may be provided with one or more holes for draining water.

  In the above-described embodiment, the structure in which the girder member 13 and the leg member 12 are arranged at two positions has been described. However, the present invention is not limited to such an embodiment, and the girder member 13 and the leg member. It is also possible to use a retaining wall block 10 having a configuration in which 12 is arranged at only one place, or a retaining wall block 10 having a construction in which a plurality of girders 13 and leg members 12 are arranged at three or more locations.

  Further, here, the embodiment in which the girder member 13 is disposed on the back surface of the front wall 11 of the retaining wall block 10 has been described. However, the embodiment is not limited to such an embodiment, and the retaining member in which the girder member 13 is not disposed. A wall block 10 is also possible. In this case, the leg member 12 is configured to extend directly rearward from the front wall 11 of the retaining wall block 10.

  In the above-described embodiment, the lower end surface of the leg member 12 and the surface of the front wall 11 are described as being perpendicular to each other. However, the present invention is not limited to such an embodiment. The end surface and the surface of the front wall 11 are not perpendicular to each other, and the front wall 11 is inclined backward (that is, the angle formed by the lower end surface of the leg member 12 and the surface of the front wall 11 is an acute angle). .

The sandbag block 20 is a sandbag bag 21 filled with a sandbag filling material 23. As the sandbag bag body 21 in the present invention, a bag made of a synthetic resin fiber woven fabric sheet, or a bag body having a mesh structure or a mesh structure of a synthetic resin fiber network having a mesh capable of storing and holding the sandbag filling material 23 is used. It can be used in the form of a square, a sphere, a cylinder or the like, and a large square is particularly preferable.
The sandbag 21 is provided with one or a plurality of fixing portions 22 for connection to other structures. As the sandbag filling material, civil engineering waste, industrial waste, or the like can be directly packed, or the civil engineering waste, industrial waste, or the like can be packed after pulverization. Of course, it is possible to pack aggregates such as earth and sand, crushed stones, and soil other than civil engineering waste and industrial waste. By packing civil engineering wastes, industrial wastes, etc. into the sandbag filling material 23, effective use of civil engineering wastes, industrial wastes, etc. can be promoted. In addition, by filling the sandbag filling material 23 with soil, as described later, it can also be used as growing soil for planting.

  In addition, in embodiment shown in FIG. 1, although shown as a structure which uses the two square sandbag blocks 20 with respect to one retaining wall block 10, it is not limited to this, One retaining wall is shown. One sandbag block 20 may be used for the wall block 10, or three or more sandbag blocks 20 may be used for one retaining wall block 10. Moreover, it can also be set as the structure which uses the one retaining wall block 10 with respect to the several retaining wall block 10. FIG.

  FIG. 2 shows a sectional view of the retaining wall structure according to the first embodiment of the present invention. This retaining wall structure is a retaining wall structure constructed by stacking retaining wall blocks 10 in a plurality of stages on the foundation ground 50, and extends to the rear side of the rear surface of the retaining wall block 10 and the front wall 11 of the retaining wall block 10. The sandbag block 20 disposed on the leg member 12 and the outer peripheral space of the sandbag block 20 are filled with the filling material 30 in the space defined by the sandbag block 20, the retaining wall block 10 and the slope 40. It consists of doing.

  As the filling material 30, crushed stone, chestnut stone, or the like is used. In the embodiment of the retaining wall structure shown in FIG. 2, since the lower end surface of the leg member 12 of the retaining wall block 10 and the surface of the front wall 11 are perpendicular to each other, the wall surface of the retaining wall block 10 is in a horizontal plane. However, by using the retaining wall block 10 in which the lower end surface of the leg member 12 and the surface of the front wall 11 are not perpendicular and the front wall 11 is inclined backward, It is also possible to set the ten wall surfaces to be tilted backward.

Next, the construction method of the retaining wall structure shown in FIG. 2 will be described.
First, the foundation ground 50 is provided below the slope 40 provided by cutting or embankment. The foundation ground 50 is formed horizontally with crushed stones and the like, and its thickness is appropriately adjusted according to the height and inclination angle of the retaining wall structure. On the foundation ground 50 formed horizontally in this way, the first-stage retaining wall block 10 is installed using a crane or the like. Next, after filling and solidifying the filling material 30 such as crushed stones and chestnuts until the upper surface of the leg member 12 of the retaining wall block 10 is flush with the upper surface, the sandbag filling material using a crane or the like on the upper surface of the leg member 12 A sandbag block 20 filled with 23 is placed.

  After the sandbag block 20 is arranged on the upper surface of the leg member 12, the sandbag block 20 is mechanically fixed to the girder member 13 or the front wall 11 of the retaining wall block 10 using the fixing portion 22 provided in the sandbag block 20. Then, the sandbag block 20 and the retaining wall block 10 are integrated.

  After the sandbag block 20 and the retaining wall block 10 are mechanically fixed, the filling material 30 is laid in the space defined by the back surface of the retaining wall block 10, the outer peripheral surface of the sandbag block 20, and the slope. At this time, the upper surface of the filling material 30 is flush with the upper surface of the retaining wall block 10, or the upper surface of the filling material 30 is made flat at a position slightly lower than the upper surface of the retaining wall block 10.

  After completing the stacking of the first stage retaining wall block 10 in this way, the retaining wall is formed by sequentially repeating the stacking of the second and subsequent retaining wall blocks 10 on the upper surface of the first stage filling material 30. The structure is complete. As shown in FIG. 2, the front wall 11 of the upper retaining wall block 10 is stacked at a position retracted to the slope side from the front wall 11 of the lower retaining wall block 10. However, depending on the situation, the front wall 11 of the upper retaining wall block 10 and the front wall 11 of the lower retaining wall block 10 may be stacked so as to be flush with each other.

  With the retaining wall structure having such a configuration, the entire weight of the sandbag block 20 acts on the retaining wall block 10, and the retaining wall structure in which only the filling material 30 is laid without using the sandbag block 20. In comparison, the sliding resistance of the retaining wall block 10 is dramatically improved, and an extremely strong retaining wall structure can be obtained.

  Next, an embodiment different from the above-described embodiment will be described. FIG. 3 is a bird's-eye view of the retaining wall block 10 and the sandbag block 20 according to another embodiment of the present invention. 3A shows a state in which the retaining wall block 10 and the sandbag block 20 are combined, FIG. 3B shows the retaining wall block 10 alone, and FIG. 3C shows the sandbag. A block 20 alone is shown.

  In the embodiment shown in FIG. 3, the leg member 12 of the retaining wall block 10 is divided and manufactured, and the leg members 12 divided by field work can be mechanically connected. Although not shown, the entire leg member 12 may be manufactured separately from the retaining wall block 10 and the leg member 12 may be mechanically fixed to the retaining wall block 10 by field work.

  With the retaining wall block 10 having such a configuration, the retaining wall block 10 can be reduced in volume, and the retaining wall block 10 can be easily manufactured, stored, transported, and handled.

  In the embodiment shown in FIG. 3, a positioning member 14 is disposed at the upper end of the beam member 13 of the retaining wall block 10. The positioning member 14 is used for positioning in the height direction and the front-rear direction of the upper retaining wall block. When the retaining wall structure is constructed, the filling material 30 is disposed on the upper surface and the surface of the positioning member 14. Lay to be one. By using such a positioning member 14, the laying work of the filling material 30 in the field work becomes easy, and the construction time can be shortened.

  The positioning member 14 may be provided integrally with the retaining wall block 10, or the positioning member 14 and the retaining wall block 10 may be separately manufactured and mechanically coupled in field work. .

  FIG. 4 is a cross-sectional view of a retaining wall structure according to another embodiment of the present invention, and shows a sectional view of the retaining wall structure using the retaining wall block 10 provided with the positioning member 14. In this embodiment, the upper retaining wall block 10 is arranged at a predetermined position on the upper surface of the positioning member 14 provided in the lower retaining wall block 10.

  FIG. 5 is a cross-sectional view of a retaining wall structure according to another embodiment of the present invention, and shows a retaining wall structure in which the foundation ground 50 is reinforced by embedding a plurality of top-type blocks 51 in the foundation ground 50. It is shown. Thus, by applying the top-of-the-box block 51 to the foundation ground 50, it is possible to construct a rigid retaining wall structure even on a soft ground.

  FIG. 6 is a cross-sectional view of a retaining wall structure according to another embodiment of the present invention, showing a retaining wall structure in which a plurality of sandbag blocks 20 are connected and disposed between the retaining wall block 10 and the slope 40. It is a thing. With the retaining wall structure configured as described above, the entire load of the plurality of sandbag blocks 20 acts as a sliding resistance force of the retaining wall block 10, so that a more rigid retaining wall structure can be constructed. It becomes possible.

  Further, in the retaining wall structure of such an embodiment, it is possible to dispose the upper retaining wall block 10 so as to be largely retracted toward the slope 40 with respect to the lower retaining wall block 10, as shown in FIG. As shown, it is possible to plant the front surface of the stacked retaining wall blocks 10. In addition, when planting the front surface of the stacked retaining wall block 10, the growing soil of planting can also be stuffed as the sandbag filling material 23 of the corresponding sandbag block 20. FIG.

  Next, another embodiment different from the above-described embodiment will be described. FIG. 7 shows a bird's-eye view of a retaining wall wall structure and a sandbag block according to still another embodiment of the present invention. Fig. 7 (A) shows a state in which the retaining wall surface structure and sandbag block are combined. Fig. 7 (B) shows the retaining wall surface structure alone. Fig. 7 (C) It shows a sandbag block alone.

  The retaining wall surface structure 60 is made of a rust-proof metal such as iron, or a resin-based composite material having essentially corrosion resistance, and includes a front wall 61, a bottom wall 62, a front wall 61, and a bottom surface. The connecting member 63 is connected to the wall 62. The bottom wall 62 is connected to the lower back surface of the front wall 61 and extends rearward of the front wall 61. The connecting member 63 is a member for maintaining the front wall 61 and the bottom wall 62 so as to always form a predetermined angle. For example, the connecting members 63 are connected to each other at the sides of the front wall 61 and the bottom wall 62.

  It is desirable that the front wall 61 and the bottom wall 62 have a grid-like structure, a skeleton (frame, truss) structure, or a mesh structure. With such a structure, holding and draining of the filling material 30 can be achieved. In addition, the front wall 61 can be planted.

  FIG. 8 shows a sectional view of the retaining wall structure using the retaining wall surface structure 60, and the sandbag block 20 and the filling material 30 are the same as those described in the embodiment shown in FIG. . Therefore, the retaining wall structure using the retaining wall surface structure 60 can be the retaining wall structure having the configuration described in FIGS. 4, 5, and 6.

In the embodiment described with reference to FIGS. 7 and 8, the connecting member 63 is shown to connect the front wall 61 and the bottom wall 62 of the same retaining wall wall structure 60. Is not limited to this. For example, in a plurality of retaining wall wall structures 60 stacked vertically, the front wall 61 of the lower retaining wall structure 60 and the bottom wall 62 or the front wall 61 of the upper retaining wall structure 60 on the upper stage. The connecting member 63 may be disposed between the lower portion of the connecting member 63 and the lower portion.

DESCRIPTION OF SYMBOLS 10 Retaining wall block 11 Front wall 12 Leg member 13 Girder member 14 Positioning member 20 Sandbag block 21 Sandbag bag body 22 Fixing part 23 Sandbag filling material 30 Filling material 40 Slope 50 Foundation ground 51 Top-of-the-wall block 60 Retaining wall wall structure Object 61 Front wall 62 Bottom wall 63 Connecting member

Claims (8)

A retaining wall structure constructed by stacking retaining wall blocks on the foundation ground,
A retaining wall block composed of a front wall and a leg member connected to the back surface of the front wall and extending rearward of the front wall;
A sandbag block on the back side of the front wall and disposed on the leg member;
A retaining wall structure comprising a sandbag block, a retaining wall block, and a filling material filled in a space defined by a slope.
The retaining wall structure according to claim 1,
On the back surface of the front wall of the retaining wall block, one or more girder members extending up and down along the front wall are integrally provided, and the number of the leg members is the same as the number of the girder members, A retaining wall structure, wherein one end of the leg member is connected to a lower portion of the girder member.
In the retaining wall structure according to claim 1 or 2,
The retaining wall structure, wherein the sandbag block is connected to the front wall or the girder member.
The retaining wall structure according to any one of claims 1 to 3,
The retaining wall structure, wherein the sandbag block is composed of one or a plurality of square sandbag blocks.
The retaining wall structure according to any one of claims 1 to 4,
A retaining wall structure, wherein the foundation ground is composed of a reinforced ground in which a plurality of top-of-the-line blocks are embedded.
Retaining wall structure constructed by stacking retaining wall surface structures on the foundation ground,
A front wall, a bottom wall connected to the lower back surface of the front wall and extending rearward of the front wall, and a retaining wall surface structure composed of a connecting member connecting the front wall and the bottom wall;
A sandbag block on the back side of the front wall and disposed on the bottom wall;
A retaining wall structure comprising a sandbag block, a retaining wall wall structure, and a filling material filled in a space defined by a slope.
The retaining wall structure according to claim 6,
The retaining wall structure, wherein the sandbag block is composed of one or a plurality of square sandbag blocks.
The retaining wall structure according to claim 6 or 7,
A retaining wall structure, wherein the foundation ground is composed of a reinforced ground in which a plurality of top-of-the-line blocks are embedded.

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