JP4708086B2 - Retaining wall structure and construction method thereof - Google Patents

Description

In the present invention, a net-like belt-like material is developed in a bag shape on the back surface of a retaining wall material to form a filling space group that is integrated in the lateral direction, and the filling space group is filled with a filling material and pressed to form a heavy rigid The present invention relates to a retaining wall structure in which a structure is formed and the heavy rigid structure is stacked in multiple stages and a method for constructing the same.

  Conventionally, a reinforced soil retaining wall construction method and a concrete retaining wall construction method are known as road retaining walls, retaining walls in site preparation sites, structures applied to dams, and the construction methods thereof.

For example, as shown in Patent Document 1, the reinforced soil retaining wall method is a method of constructing a reinforced soil retaining wall by embankment and covering the front of the embankment with blocks for the construction of roads and the widening of roads and railways.
The concrete retaining wall construction method is a construction method in which, for example, an L-shaped retaining wall of reinforced concrete is installed on the site and earthed, as shown in Patent Document 2, for example.
JP-A-11-229378 Japanese Patent Application Laid-Open No. 2002-054161

However, the conventional concrete retaining wall construction method and reinforced soil retaining wall construction method have the following problems.
<1> In the concrete retaining wall method, the weight of the concrete retaining wall is heavy and the entire amount of the retaining wall must be carried in. Therefore, the construction period is longer than that of the reinforced soil retaining wall method, and effective use of locally generated soil is required. It is not economical because it cannot be done.

The <2> reinforced soil retaining wall construction method needs to secure the construction site more widely than the concrete retaining wall construction method, so the construction conditions are limited and cannot be easily implemented.

Accordingly, an object of the present invention is to provide a gravity-type high-rigidity retaining wall structure that is continuously formed in the lateral direction and the up-down direction and has an integrated heavy-rigid structure constructed on the back surface of the retaining wall. is there.

In order to solve the above-described problems, the first invention of the present application is a retaining wall structure in which a back surface of a retaining wall is filled with a filler, and a plurality of retaining wall materials are arranged in a vertical direction and a lateral direction. And a strip-like material that is laid in the lateral direction while being folded back in the middle so as to continuously form a plurality of filling spaces opened up and down on the back surface of the retaining wall material arranged in the vertical direction. A retaining wall structure, wherein a heavy rigid structure is formed in a laterally integrated manner by a filler and a band-like material filled in the filling space. Is to provide.

  Further, the second invention of the present application is characterized in that, in the retaining wall structure according to the first invention of the present application, the belt-like material has a perforated structure and imparts continuity to the filler in the adjacent filling space. A retaining wall structure is provided.

The third invention of the present application is the retaining wall structure according to the first or second invention of the present application, wherein the retaining wall member is connected to the back side of the retaining wall member with a belt-like connecting member and spaced apart. It is intended to provide a retaining wall structure, characterized in that the strip and the tubular material are stretched over the tubular material , and the tubular material is a folded portion of the strip-shaped material.

  According to a fourth invention of the present application, in the retaining wall structure according to the first or second invention of the present application, a notch is provided on the back side of the retaining wall material, and a strip-like material is disposed on the pipe material disposed in the notch. It is intended to provide a retaining wall structure characterized by being connected by crossing.

  The fifth aspect of the present invention is the retaining wall structure according to any one of the first to fourth aspects of the present invention, wherein the filling space is a combination of different volumes. Is to provide.

The sixth invention of the present application is a method for constructing a retaining wall structure in which the back surface of the retaining wall is filled with a filler, and a plurality of retaining wall materials are arranged in the longitudinal direction and the vertical direction to dispose the retaining wall. Forming a band-shaped material connected to the back surface of the retaining wall material with a predetermined interval, folding the band-shaped material in the middle, continuously forming a plurality of filling spaces opened up and down in the longitudinal direction, A construction method of a retaining wall structure is provided, which is characterized by filling a filling space with a filler to form a heavy rigid structure integrated in a longitudinal direction on the back surface of the plurality of retaining wall members.

Moreover, 7th invention of this application provides the construction method of a retaining wall structure characterized by stacking the said heavy rigid structure hierarchically in 6th invention of this application .

  Further, the eighth invention of the present application provides the method for constructing a retaining wall structure according to the seventh aspect of the present invention, wherein the structure of the retaining wall structure is constructed by shifting the layers of the heavy rigid structure while shifting the layers. To do.

  The ninth invention of the present application provides the construction method of the retaining wall structure according to the eighth aspect of the present invention, wherein the retaining wall structure is greened on the exposed portion of the filler. Is.

The present invention can obtain the following effects by means for solving the above-described problems.
<1> A heavy rigid structure (a lump layer) integrated in the lateral direction and the vertical direction is formed on the back surface of the retaining wall material, and a gravity type and highly rigid pseudo retaining wall can be obtained.
<2> The laying length of the back surface of the retaining wall material can be easily changed simply by changing the folding point of the belt-shaped material, and it is easy to cope with the back ground shape.
<3> By changing how the heavy rigid structures are stacked, the inclination of the retaining wall structure can be set to an arbitrary angle.
<4> By performing the greening operation on the heavy rigid structure, the root of the heavy rigid structure is rooted, and an effect of suppressing landslide occurs.
<5> Greening the heavy rigid structure reduces carbon dioxide and contributes to the prevention of global warming.
<6> It requires less construction site than the reinforced soil retaining wall method, and can be constructed easily because the construction site may be the same as the concrete retaining wall method.
<7> The construction period can be shortened and the locally generated soil can be used effectively.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Also, the X axis shown in the figure will be described as the depth direction, the Y axis as the horizontal direction, and the Z axis as the vertical direction.

<1> Overall Configuration FIG. 1 is an external perspective view of a retaining wall structure that is an embodiment of the present invention.

<2> Strip material 1
The belt-shaped material 1 is a long planar reinforcing material that extends in the lateral direction of the retaining wall material 2, and uses a known member that exhibits a perforated structure such as a well-known geogrid or geotextile.

<3> Retaining wall material 2
The retaining wall material 2 is a member that forms the retaining wall C by being installed in the lateral direction and the vertical direction.
The retaining wall material 2 uses members formed in various shapes such as precast concrete. In particular, it is preferable to project a connecting portion 21 for connecting to the belt-like material 1 on the back surface of the retaining wall material 2. A predetermined number of insertion holes 211 through which the connecting material 6 is inserted are formed in the connecting portion 21.

<4> Filler 4
Although the locally generated soil generated at the time of construction is mainly used as the filler 4, any material that can obtain sufficient rigidity as a structure after filling may be used, and various kinds of fillers can be mentioned.

<5> Tube material 5
The pipe 5 uses a known pipe or rod having flexibility. In particular, pipes and rods made of flexible and corrosion-resistant materials such as FRP (Fiber Reinforced Plastics), with connecting means such as a fitting structure at the end to change the length in the vertical direction It is desirable that it is possible.

<6> Connecting material 6
The connecting member 6 uses a belt-like connector made of a fiber material or the like, but the connection between the belt-like member 1 and the retaining wall member 2 is not limited to the above method, and may be connected by a known method.

  Next, each process of the construction method of the retaining wall structure of the present invention will be described (FIG. 2).

<1> Connection of the strip-shaped material 1 and the retaining wall material 2 The retaining wall material 2 is passed through the insertion hole 211 provided in the connecting portion 21 of the retaining wall material 2 and the perforated (grid) of the strip-shaped material 1. It is a folded portion on the side, and is connected and fixed via a tube material 5 installed in a gap between adjacent filling spaces 3. By the above connection, it is possible to provide a follow-up property to the earth pressure of the filler 4 described later (FIG. 2 (a)).

<2> Laying of the strip-shaped material 1 From the back of the retaining wall material 2 installed in advance, the strip-shaped material 1 is developed in the transverse direction of the retaining wall material 2, folded back at an appropriate distance, and the retaining wall material 2 and the strip-shaped material A filling space 3 having a substantially U-shaped shape or a substantially U-shaped shape surrounded by a side surface with an open top and bottom is formed (FIG. 2A).

The unfolding / folding operation of the belt-shaped material 1 is repeated in the lateral direction of the retaining wall material 2 to form a filling space group that is continuous in the lateral direction (FIG. 2B).

In addition, the strip | belt-shaped material 1 which forms the adjacent filling space 3 can also be mutually connected by a binding member (not shown).
The binding member uses a well-known binding member such as an insulation lock, and the shape of the filling space 3 before filling can be easily maintained by connecting the strips 1 forming the adjacent filling spaces 3 to each other. .

<3> Construction of Heavy Rigid Structure B Filled space 3 is filled with filler 4 and fully compacted by a heavy machine.
The filler 4 filled and rolled into the filling space group is integrated in the lateral direction of the retaining wall material 2 to form a heavy rigid structure B (FIG. 2C).

  Here, the heavy rigid structure B refers to a heavy structure having sufficient rigidity.

In addition, the filling process in the present invention may be performed each time the filling space 3 is formed in one stage, or may be performed after the filling space 3 is formed in the up-down direction, and is the same regardless of the order of the order. An effect can be obtained.

<4> Construction of retaining wall structure A The above-mentioned heavy rigid structure B is repeatedly formed and stacked in multiple stages. (Fig. 3).
Since the retaining wall structure A is integrated laterally and vertically with the rear surface of the retaining wall C, it can function as a gravity-type pseudo retaining wall having high rigidity.

The heavy rigid structure B can be stacked up and down without shifting up and down (FIG. 4).
A greening operation such as wood 7 can be performed on the exposed portion of the filler 4 when stacked. Slip resistance can be improved by rooting and fixing the inside of the structure by a greening operation.

In the present invention, the length in the transverse direction of the strip 1 is arbitrarily adjusted according to the shape of the place of enforcement, and the filler is filled by combining the filling spaces of different volumes. (4a, 4b, 4c) B can also be formed (FIG. 5).
In order to adjust the volume of the filling space 3, it is only necessary to change the turning point of the belt-like material 1, so that the retaining wall structure A can be easily matched to the shape of the construction site.

  The present invention can also be applied to slope construction (FIG. 6). The retaining wall structure A can be constructed using the slope unit 8 instead of the retaining wall material 2 to stabilize the entire slope.

Further, as another embodiment of the method for connecting the strip 1 and the retaining wall member 2, a notch is provided on the back side of the retaining wall member 2, and the strip 1 is stretched over the pipe member 5 disposed in the notch. May be.
More specifically, as shown in FIG. 7, a dovetail groove 212 in which the pipe material 5 can be installed is provided in the connecting portion 21 of the retaining wall material 2, the pipe material 5 is installed in the dovetail groove 212, and the belt-like material 1 is attached. The belt-shaped material 1 and the retaining wall material 2 are connected by spanning the pipe material 5.
In the connection method in the present embodiment, the connection material 6 for connecting the belt-like material 1 and the retaining wall material 2 is not necessary, and the belt-like material 1 is folded and temporarily secured using the internal space of the dovetail 212. It is possible to finely adjust the length in the transverse direction as needed even after the belt-shaped material 1 has been unfolded.

The perspective view of the retaining wall structure of Example 1 of this invention. The top view which shows the construction process of the retaining wall structure of Example 1 of this invention The front view of the retaining wall structure of Example 1 of this invention. The front view of Example 2 of this invention. The top view of Example 3 of this invention. The front view of Example 4 of this invention. The top view of Example 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Strip | belt-shaped material 2 ... Retaining wall material 21 ... Connection part 211 Insertion hole 212 Dovetail groove 3 Filling space 4 Filling material 5 Pipe material 6 Connecting material 7・ ・ ・ Kimoto 8 ・ ・ ・ Slope unit A ・ ・ ・ Retaining wall structure B ・ ・ ・ Heavy rigid structure C ・ ・ ・ Retaining wall D ...

Claims (9)

A retaining wall structure in which the back of the retaining wall is filled with a filler,
A retaining wall in which a plurality of retaining wall materials are arranged vertically and laterally;
On the back surface of the plurality of retaining wall materials, a strip-like material laid in the longitudinal direction while folding back in the middle so as to continuously form a plurality of filling spaces released in the vertical direction ,
A filler for filling the filling space,
It is characterized in that a heavy rigid structure integrated in the longitudinal direction is formed by the filler and the band-like material filled in the filling space,
Retaining wall structure. The retaining wall structure according to claim 1, wherein the band-shaped material has a perforated structure and imparts continuity to the filler in the adjacent filling space. In the retaining wall structure according to claim 1 or 2,
On the back side of the retaining wall material, a pipe material connected with a belt-like connecting material and spaced apart; and
Span the strip over the tube,
The tube material is a folded portion of the strip material,
Retaining wall structure. The retaining wall structure according to claim 1 or 2, characterized in that a notch is provided on the back side of the retaining wall material, and a strip-like material is stretched over and connected to the pipe material installed in the notch. Wall structure. The retaining wall structure according to any one of claims 1 to 4, wherein the filling space is a combination of different volumes. A method for constructing a retaining wall structure in which a back surface of a retaining wall is filled with a filler,
A plurality of retaining wall materials are arranged in the longitudinal direction and the vertical direction to form a retaining wall,
A belt-shaped material is connected to the back surface of the retaining wall material at a predetermined interval,
Folding the strip in the middle, continuously forming a plurality of filling spaces opened up and down in the longitudinal direction,
The filling space is filled with a filler to form a heavy rigid structure integrated in the longitudinal direction on the back surface of the plurality of retaining wall materials,
Retaining wall structure construction method. The method for constructing a retaining wall structure according to claim 6, wherein the heavy rigid structures are stacked in a hierarchical manner. The construction method of the retaining wall structure according to claim 7, wherein the layers of the heavy rigid structure are shifted and stacked. The method for constructing a retaining wall structure according to claim 8, wherein greening is performed on an exposed portion of the filler.

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