JPH0378895B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to the wall structure of reinforced earth structures used for constructing roads, retaining walls, etc. Concerning wall structures of reinforced earth structures that are protected and difficult to destroy.

[Conventional technology]

Conventionally, as a wall structure of this type of reinforced earth structure, as shown in FIG. It is known that the ends are connected by bolts 5, thereby connecting a band-shaped reinforcing material 4 to the back surface 2 of the wall panel 1.

[Problem that the invention seeks to solve]

However, in the above-described wall structure, the connecting portion 6 between the fixing fitting 3 and the end of the reinforcing member 4 is easily compressed and destroyed during rolling during embankment. That is, the wall panel 1 is usually made of a rigid material such as concrete, while the embankment is a granular material and is compressed during compaction. Therefore, the connecting portion 6 causes relative displacement during compaction of the embankment, and the surrounding area It is greatly affected by the movement of soil particles, and will eventually be destroyed.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a wall structure for a reinforced earth structure in which the joint between a wall panel and a reinforcing material is safely protected and difficult to break, and which improves the drawbacks of the above-mentioned known techniques.

[Means for solving problems]

In order to achieve the aforementioned object, according to the present invention:
A reinforced earth structure comprising a wall panel, an embankment layer embanked on the back side of the wall panel, and a reinforcing material installed within the embankment layer and connected at an end to the wall panel, wherein the wall panel A bag-shaped protective material having a hole bored at the top is fixed to the back side of the panel, and the end of the reinforcing material is passed through the hole and locked to the inner wall surface of the bag-shaped protective material by a locking member. It is characterized by being connected to the wall panel by.

Hereinafter, the present invention will be explained in detail using the accompanying drawings.

FIG. 1 is a perspective view showing a wall structure according to the present invention, and FIG. 2 is a partial sectional view of FIG. 1.
A wall panel 10 is made of a rigid material such as concrete. A bag-shaped protective material 12 is fixed to the back surface 11 of the wall panel 10. This bag-shaped protective material 1
2 may have a U-shaped cross section as shown in FIG. 1, or may have a semi-cylindrical shape as shown in FIG. 4, with a space 13 inside. Any shape may be used as long as it can form.

The bag-shaped protective material 12 may be fixed to the back surface 11 by placing both sides 14, 14 in contact with the back surface 11 as shown in the first figure, passing a bolt 16 through the top 15 and tightening it to the back surface 11. Although not shown, both sides 14, 14 may be buried in the wall panel 10 from the back surface 11. In this case, the bag-shaped protective material 12 may be arranged horizontally as shown in the first figure, or vertically as shown in the fourth figure.

In addition, in the above description, the bag-shaped protective material 12 may be fixed loosely so as to allow some movement. In this case, the hole of the bolt 16 may be made larger or the bolt 16 may be tightened loosely.

Further, a hole 17 is provided in the top portion 15 of the bag-shaped protective material 12.
is drilled. The shape of this hole 17 may be horizontally long or vertically long, but it is preferably vertically long so that the reinforcing material 18 can move downward as described later.

A reinforcing member 18 is connected to the back surface 11 of the wall panel 10. This connection is shown in Figure 2,
After passing the end 19 through the hole 17, a nut 20 (locking member) is screwed onto the end 19 from the space 13 inside the bag-shaped protective material 12 to lock it to the inner wall surface 21. An elongated locking member 20 is fixed in advance to the end 19 as shown in FIG. It is also possible to rotate the reinforcement 18 so that the stop member 20 is perpendicular to the hole 17 and to lock it to the inner surface 21 . The above-mentioned reinforcing member 18 may have any shape such as a rod shape or a band shape, and an anchor plate 23 is attached to the tip 22 of the reinforcing member 18 .

Although not shown, the space 1 of the bag-shaped protective material 12
3 may be filled with an elastic material such as polyurethane or styrofoam.

In constructing a reinforced earth structure, the wall panel 10 configured as described above is first placed on the ground 44 as shown in FIG. 3. Next, earth is placed on the back surface 11 side of the wall panel 10, and the earth is rolled to form an earth embankment layer 25. At this time, the reinforcing material 18 connected to the back surface 11 of the wall panel 10 is laid in the embankment layer 25, and by repeating the steps of embankment and compaction, a reinforced earth structure 26 of a desired height is constructed.

In addition, in the present invention, as shown in FIG. 6, the bag-shaped protective material 12 is arranged in a horizontal direction, and the upper and lower sides 14 are arranged astride the upper and lower wall panels 10, 10. When constructing a reinforced earth structure, the wall panels 10, 1
It becomes easy to accumulate 0's.

[Effect]

According to the wall structure of the present invention, the bag-like protective material 12 fixed to the back surface 11 of the wall panel 10 is attached to the reinforcing material 1.
Since it covers and protects the connecting part between 8 and the back surface 11,
The connecting portion is not affected by the movement of soil particles due to compaction during embankment, and therefore the connecting portion is safely protected and difficult to be destroyed even by relative displacement between the back surface 11 and the embankment layer 25.

Furthermore, when the space 13 is filled with an elastic material, this elastic material adapts to the movement of the reinforcing material 18 for a long period of time without being affected by the movement of soil particles from the outside.

〔Effect of the invention〕

According to the above-described present invention, it is possible to construct a stable reinforced earth structure in which the connecting portion between the wall panel and the reinforcing material is safely protected and difficult to be destroyed.

[Brief explanation of drawings]

FIG. 1 shows a perspective view of a specific example of a wall structure according to the present invention, FIG. 2 shows a partial cross-sectional view of the bag-shaped protective material portion of FIG. 1, and FIG. 3 shows a reinforcement according to the present invention. FIG. 4 shows a perspective view of another specific example of the bag-like protective material according to the present invention, and FIG. 5 shows a specific example of the locking member used in the present invention. , FIG. 6 shows a partial sectional view of another specific example of the reinforced earth structure according to the present invention, and FIG. 7 shows a perspective view of a conventional wall structure. DESCRIPTION OF SYMBOLS 10... Wall panel, 11... Back, 12... Bag-shaped protective material, 13... Space, 14... Side, 15... Top, 1
7... Hole, 18... Reinforcing material, 19... End of reinforcing material, 2
0... Nut, 21... Inner wall surface, 24... Ground, 25...
Embankment layer, 26...Reinforced earth structure.

Claims (1)

[Claims] 1. A reinforced earth structure consisting of a wall panel, an embankment layer embanked on the back side of this wall panel, and a reinforcing material laid within this embankment layer and connected at its end to the wall panel, the above-mentioned A bag-like protective material with a hole bored at the top is fixed to the back side of the wall panel, and the end of the reinforcing material is passed through the hole and is locked to the inner wall surface of the bag-like protective material by a locking member. A wall structure of a reinforced earth structure connected to a wall panel.