JP2880898B2 - Construction method of reinforced soil structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a reinforced earth structure constructed by stacking a plurality of L-shaped embankment reinforcing members by filling the back surface with an embankment material and connecting them to each other. About.

[0002]

2. Description of the Related Art As a reinforced earth structure constructed facing a road or the like, for example, FIG.
As shown in FIG. 8 , a plurality of wall panels 20 made of concrete panels are filled with embankment material 21 on the back thereof,
Further, a reinforcing earth structure such as a retaining wall constructed by embedding a plurality of reinforcing members 22 in the embankment material 21 and stacking the reinforcing members 22 while holding the reinforcing members 22 is known.

However, in this type of reinforced earth structure, since the earth pressure of the embankment material 21 acting on the wall is extremely large,
There are problems such as a large number of reinforcing members 22 that support the wall surface panel 20 in the embankment material 21 and need to be buried in the embankment material 21 as deep and long as possible.

In addition, when the embankment material 21 is compacted, the wall surface is easily deformed, so that the assembling and installation of the embankment material tend to be complicated, and the material cost is increased due to the necessity of a large amount of the reinforcing member 22. There were challenges.

Further, the stability of the wall panel 20 at the time of construction is poor and it is not possible to sufficiently roll the embankment material 21 on the back side, so that the wall displacement is large and an integrated reinforced soil structure is constructed. There were issues such as being unable to do so.

The present invention has been made to solve the above-mentioned problems, and has a reinforced soil structure which is stable in strength, and which can greatly reduce the number of reinforcing members and improve workability and economy. The purpose is to provide a construction method for objects.

[0007]

According to the present invention, there is provided a method for constructing a reinforced soil structure, comprising the steps of: filling an embankment reinforcing member with a filling material on a back surface thereof; In the construction method of things,
The embankment reinforcing member is formed in an L-shape from a wall portion rising along the wall surface of the embankment material and a leg projecting from the wall portion into the embankment material, and a partition member is provided inside the wall surface portion. Each of the partition members, the wall portions, and the leg portions constitute a space portion opening directly above the partition member, and the wall portions, the leg portions, and the partition members are arranged with a plurality of vertical and horizontal reinforcing bars. At the same time, the intersections are integrally welded to form a grid, and the space is filled with a solidifying material.

[0008] Further, in a construction method of a reinforcing earth structure, the embankment reinforcing member is constructed by filling the embankment material on the back surface thereof and stacking a plurality of them while being connected to each other.
The embankment reinforcing member is formed in an L-shape from a wall portion rising up along the wall surface of the embankment material and a leg projecting into the embankment material from a lower end of the wall surface portion, and the wall surface portion and the leg portion are formed. While arranging multiple vertical and horizontal reinforcing bars vertically and horizontally,
The intersections are integrally formed in a grid by welding, and a panel is installed outside the wall to form a space from the panel and the wall. It is characterized by filling.

[0009]

【Example】

Embodiment 1 FIG. 1 to 4 show an embodiment of a method for constructing a reinforced soil structure according to the present invention. In the drawings, reference numeral 1 denotes a plurality of layers in an embankment material 2 alternately with an embankment material 2 and connected to each other. Embankment reinforcing members for building a wall A such as a retaining wall while preventing the collapse of the embankment material 2, connecting rods 3 for connecting the vertically adjacent embankment reinforcing members 1, 4 for reinforcing the vertically adjacent embankment The partition member 5 vertically installed between the members 1 and 1 is formed in a groove shape which is opened right above by the wall portion 1a, the leg portion 1b and the partition member 4 of the embankment reinforcing member 1 on the surface layer of the reinforcing soil structure. A space portion that is configured and filled with the consolidation material 6, and a reference numeral 7 is a block body that is formed on the surface layer portion of the reinforced soil structure by filling the space portion 5 with the consolidation material 6 (reference numerals a,
b, c, d).

An embankment reinforcing member 1 is formed along a wall surface A, and protrudes from the lower end of the wall surface 1a.
From the legs 1b to prevent sinking, moving, spills, etc.
1b is formed in an L shape which is considerably longer than the wall portion 1a (see FIG. 2).

[0011] Further, both the wall portion 1a and the leg portion 1b are installed with a plurality of vertical reinforcing bars and horizontal reinforcing bars crossing each other vertically and horizontally.
The intersections are integrally welded to form a grid. At the upper end of the wall portion 1a, a convex portion 1c is formed by bending the upper end of each vertical reinforcing bar outward or inward in a U-shape (in the embodiment, outwardly bent). The convex portion 1c projects outside the mesh of the wall portion 1a of the embankment reinforcing member 1 located on the upper side, and the convex portion 1c and the wall portion
By inserting a connecting rod 3 made of a reinforcing bar or the like into a hole 1d formed by the vertical reinforcing bar 1a (see FIG. 3), the embankment reinforcing members 1 vertically adjacent to each other are connected to each other.

Similar to the embankment reinforcing member 1, the partition member 4 is formed in a lattice panel shape by arranging a plurality of vertical reinforcing bars and horizontal reinforcing bars in the vertical and horizontal directions, and integrally welding intersections. 4). The partition member 4 is vertically provided between the legs 1b, 1b of the embankment reinforcing member 1 vertically adjacent to each other, and is supported by connecting the upper and lower ends thereof to the legs 1b, 1b, respectively. .

In order to connect the upper and lower ends of the partition member 4 to the legs 1b and 1b of the upper and lower embankment reinforcing members 1 and 1, for example, hooks 4a are provided at the upper and lower ends of a vertical reinforcing bar of the partition member 4. The structure may be such that 4a is hooked on a vertical reinforcing bar or a horizontal reinforcing bar of the leg 1b (see FIG. 4).

The partition member 4 may be made of a reinforcing steel grit, a synthetic resin grit, a polystyrene foam block, or the like.

As the consolidation material 6, there is used a material such as soil cement, foam mortar or concrete using locally generated soil, which flows during construction and hardens over time. Then, by the hardening of the solidification material 6, a block body 7 that is stable in strength is constructed on the surface layer of the reinforced soil structure,
The block body 7 holds the embankment material 2 on the back surface thereof.

[0016]

[0017]

Embodiment 2 FIG. 5 shows another embodiment of the method of constructing a reinforced soil structure according to the present invention, in which a reinforcing member 8 is arranged in a consolidated material 6 so that a block body B has a reinforced concrete structure. is there.

Embodiment 3 FIG. FIG. 6 shows an embodiment of the method of constructing a reinforced soil structure according to the present invention, in which a panel 9 made of a foam material or the like is installed outside the wall portion 1a of the embankment reinforcing member 1 as a formwork. By doing so, the space portion 5 is formed, and the block member 7 is constructed by filling the space portion 5 with the solidifying material 6. Other configurations are substantially the same as those of the first embodiment.

Embodiment 4 FIG. 7 shows another embodiment of the construction method of the reinforced soil structure according to the present invention. The vegetation mat 10 is installed inside the wall portion 1a of the embankment reinforcing member 1 to green the reinforced soil structure. The other configuration is exactly the same as that of the first embodiment.

[0021]

Since the present invention is configured as described above, it has the following effects.

The embankment reinforcing member is formed in an L-shape with a wall portion rising along the wall surface of the reinforcing soil structure, and a leg portion protruding from the wall surface into the embankment material. Therefore, there is no need to particularly support during construction, and this has the effect of improving workability.

In addition, since a strong and stable block body is constructed on the surface layer portion of the reinforced soil structure, a large amount of embankment material filled on the back surface thereof can be reliably held, and the strength can be stabilized. In addition, the compaction of the embankment material can be carefully performed, and there is an effect that the settlement, movement, runoff, etc. of the embankment material can be prevented.

In addition, the block body is filled with a solidifying material in a space defined by a wall surface portion, a leg portion, and a partition member of the embankment reinforcing member, so that the block body has a predetermined shape in accordance with the scale of the reinforcing earth structure to be constructed. There is an effect that a thing of a scale can be easily constructed.

Further, since the block body is self-supporting and stable by itself, there is almost no need for a reinforcing member for supporting the block body, and there is also an effect of improving workability and economy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a reinforcing soil structure.

FIG. 2 is a perspective view of an embankment reinforcing member.

FIG. 3 is an enlarged vertical cross-sectional view showing a connecting portion of an upper and lower embankment reinforcing member.

FIG. 4 is a perspective view of a partition member.

FIG. 5 is a longitudinal sectional view of another embodiment of the reinforcing soil structure .

FIG. 6 is a longitudinal sectional view showing one embodiment of a reinforcing soil structure.
You.

FIG. 7 is a longitudinal sectional view of another embodiment of the reinforcing soil structure .

FIG. 8 is a longitudinal sectional view showing an example of a conventional reinforcing soil structure.
You .

[Explanation of symbols]

1 ... embankment reinforcing member, 2 ... embankment material, 3 ... connecting rod, 4 ...
Partition member, 5: space portion, 6: consolidated material, 7: block body, 8: strong reinforcing bar, 9: panel, 10: vegetation mat.

Claims (2)

(57) [Claims] 1. A method for constructing a reinforcing soil structure in which a filling material is filled in a back portion of a filling material on a back surface thereof and connected to each other to stack a plurality of filling materials, wherein the filling material is attached to a wall surface of the filling material. A wall portion rising along the wall portion and a leg portion projecting from the wall portion into the embankment material are formed in an L-shape, and partition members are respectively installed inside the wall portion to separate the partition member and the wall portion. And the space portion opening directly above from the leg portion, the wall portion, the leg portion, and the partition member are arranged vertically and horizontally in a plurality of vertical reinforcing bars and horizontal reinforcing bars, and the intersections are integrally welded. A method of constructing a reinforced soil structure, wherein each of the spaces is formed in a lattice shape and a filling material is filled in the space. 2. A method of constructing a reinforcing soil structure in which a filling material is filled in a back portion of a filling material on a back surface thereof and connected to each other to stack a plurality of filling materials, wherein the filling material is attached to a wall surface of the filling material. A wall portion that rises along and a leg portion that protrudes into the embankment material from the lower end portion of the wall portion is formed in an L shape, and the wall portion and the leg portion are arranged with a plurality of vertical and horizontal reinforcing bars. At the same time, the intersections are integrally welded to form a lattice, and a panel is installed outside the wall, and a space is formed from the panel and the wall, and the space is fixed to the space. A method for constructing a reinforced soil structure, characterized by filling with binder.