JPS63176525A - Wall structure of reinforced soil structure - Google Patents

Abstract

PURPOSE:To construct a stable reinforced soil structure by a method in which a connector to move a reinforcement vertically is provided for a connector fixed to the rear of a wall, the end of the reinforcement is connected to the connection, and a length regulator is provided for the reinforcement. CONSTITUTION:A wall 2 whose rear 5 is fixed with a connector 10 is set on the ground 1, and the end 4a of a reinforcement 4 having an anchor plate 3 on its tip 4b is thrust through the long hole 11 of the connector 10 and connected to the connector 10 by fixing it by a coupler metal 13. The tip 4b of the reinforcement 4 is buried in the fixing region 6 of banking to connect it to the connector 10 in a vertically movable manner. After the reinforcement 4 is tensed by clamping the cap nut 7 of a length regulator, banking is formed on the back side of the wall 2 and compacted to construct a reinforced soil structure 9.

Description

[Detailed Description of the Invention] [Field of Industrial Application] ′ The present invention relates to the wall structure of reinforced soil structures used for constructing roads, retaining walls, etc., and particularly relates to reinforced soil that is stable with little displacement of the wall surface. Regarding the wall structure of a structure.

[Conventional technology]

As this type of reinforced earth structure, the structure shown in FIG. 9 is conventionally known. First, as shown in FIG. 9(a), the wall 2 is installed on the ground 1, and the end 4a of the reinforcing member 4 having the anchor plate 3 at the tip is directly connected to the back surface 5 of the wall 2. , and the reinforcing member 4a, whose tip 4b with the anchor plate 3 is embedded in the anchoring area 6 of the embankment, is screwed together with a cap nut 7 at an arbitrary intermediate position 4C. Next, after tightening the cap nut 7 and tensioning the reinforcing member 4, the ninth
As shown in Figure (b), fill the back 5 side of the wall 2,
A reinforced earth structure 9 is constructed by rolling and forming an embankment layer 8. .

Furthermore, a reinforced earth structure shown in FIG. 10 is also known. First, as shown in FIG. 10(a), the wall surface 2 with the connecting member 10 fixed to the back surface 5 is installed on the ground l, and the end of the reinforcing material 4 having the anchor plate 3 at the tip 4b is installed. 4a to the connecting member IO, and embed the tip 4b having the anchor plate 3 in the anchoring area 6 of the embankment,
Next, as shown in FIG. 10(b), earth is embanked on the back side 5 of the wall surface 2 and compacted to form an embankment layer 8 to construct a reinforced earth structure 9.

As is clear from the enlarged perspective view of FIG. 6, the connecting member 10 is formed with a long hole 11 extending in the vertical direction as a connecting portion, and is fixed to the back surface 5 via a connecting rod 12. And reinforcement material 4
After passing the end 4a through the elongated hole 11, the end 4a is connected to the connecting member 10 so as to be movable up and down by screwing or fixing a stopper 13 to the end 4a. Therefore, as shown in FIG. 10(b), the reinforcing material 4 is forced into the elongated holes 11 by the pressure during rolling compaction.
Move downwards.

[Problem that the invention seeks to solve]

In the reinforced soil structure shown in FIG. 9, the ends of the reinforcing materials 4 are directly connected to the back surface 5 as shown in FIG. 9(a), so the rolling pressure is reduced as shown in FIG. Reinforcement material by 4
is bent, which causes wall surface displacement such as the wall surface 2 inclining toward the rear surface 5, resulting in instability.

In addition, in the reinforced earth structure shown in FIG. 10, since the reinforcing material 4 is vertically movably connected to the connecting member 10 as shown in FIG. 10(a), Although it does not bend, since the cap nut 7 for adjusting the length of the reinforcing member 4 as shown in Fig. 9 is not provided, the reinforcing member 4 loosens due to rolling pressure as shown in Fig. 10(b). As a result, wall surface displacement occurs, such as the wall surface 2 inclining outward, resulting in instability.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a wall structure of a reinforced earth structure that is stable with less wall displacement and that improves the drawbacks of the above-mentioned known techniques.

[Means for solving problems]

In order to achieve the above-mentioned object, according to the present invention, there is provided a wall surface having a connecting member fixed to the back surface, an embankment layer embanked on the back side of this wall surface, a layer of embankment laid within this embankment layer, and an end connected to the connecting member. In a reinforced earth structure composed of a reinforcing material connected to a member, a connecting part is formed in the connecting member so that the reinforcing material can be moved up and down, and an end of the reinforcing material is moved up and down in this connecting part. The reinforcing member is freely connected, and the reinforcing member is provided with a length adjusting device that can adjust the length.

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

FIG. 1 is a sectional view showing a specific example of the wall structure of the reinforced earth structure according to the present invention, and FIGS. 2(a), (b) and 3(a), (b) 4 and 5 are respectively explanatory diagrams of specific examples of the wall structure of the present invention, and FIG.
7 and 8 are explanatory diagrams of specific examples of the connecting member used in the present invention, respectively.

First, as shown in FIG. 2(a), the wall surface 2 having the connecting member 10 fixed to the back surface 5 is installed on the ground 1, and the end 4 of the reinforcing member 4 having the anchor plate 3 at the tip 4b
a to the connecting member 10, and the tip 4b having the anchor plate 3 is embedded in the anchoring area 6 of the embankment.

As is clear from FIG. 6, the connecting member 10 is formed with a long hole 11 extending in the vertical direction as a connecting portion, and is fixed to the back surface 5 via a connecting rod 12. Then, after passing the end 4a of the reinforcing material 4 through the elongated hole (connection part) 11, the end 4a is attached to the stopper 1.
By screwing or fixing 3, it is connected to the connecting member 10 so as to be movable up and down.

In addition to the connecting member 10 shown in FIG. 6, the connecting member 10 may be formed by forming a rod-shaped body into a U-shape as shown in FIG. 7. In this case, the legs 14.15 are fixed to the back surface 5 in a vertical relationship, and the resulting longitudinal bar portion 16 becomes a connection, onto which the end 4a of the reinforcement 4 is rolled into a ring. By engaging, the reinforcing member 4 is connected to the connecting member 10 so as to be vertically movable.

Further, the connecting member 10 is connected to the rTJ as shown in FIG.
It may be a shaped member. This includes the base 17 and a vertical line extending at right angles from a vertical line approximately in the center of one side of the base 17.
The projecting piece 18 has a long hole 11, and is fixed to the back surface 5 of the wall surface 2, particularly at the joint portion 19, with bolts 20. In this case, the elongated hole 11 becomes a connecting part, and by rolling the end 4a of the reinforcing member 4 into a ring shape and engaging the connecting part 11 as shown in FIG. 7, the reinforcing member 4 can move up and down to the connecting member 10. connected to.

As shown in FIG. 2(a), the reinforcing member 4 is provided with a length adjusting device 7 that can adjust the length at any intermediate position 4C. In this case, the length adjustment device 7 is a cap nut,
The reinforcing member 4 is formed by screwing parts A and B together with a cap nut 7. (This is shown in detail in Figure 4.)
In addition to the cap nut 7 as shown in FIG.
The length of the reinforcing member 4 can also be adjusted by forming a thread groove in a and screwing a napht 7a into the thread groove. In this case, the nut 7a serves as a length adjustment device.

Next, in FIG. 2(a), after tightening the cap nuts 7 to tension the reinforcing material 4, as shown in FIG. 2(b), earth is embanked on the back side 5 of the wall surface 2, and the embankment layer is compacted. 8 to construct a reinforced earth structure 9.

It is preferable that the reinforcing member 4 is tensioned by the cap nuts 7 to such an extent that the wall surface 2 is slightly inclined toward the rear surface 5 as shown in FIG. 3(a). As shown in Fig. 3(b), when the back side of the wall is filled with earth and compacted, the pressure of the rolling causes the wall 2 to rise, and as a result, the wall 2 stands upright perpendicular to the ground 1. This is because it can be done.

By repeating the steps shown in FIGS. 2(a) and 2(b) and embanking in layers, a reinforced earth structure 9 of a desired height is constructed as shown in FIG. 1.

[Effect]

According to the wall structure of the present invention, since the connecting portion (elongated hole) 11 is formed in the connecting member 10 fixed to the back surface 5,
As shown in FIG. 2(b), the reinforcing material 4 moves below the elongated hole 11 due to the pressure during rolling compaction, and the reinforcing material 4 does not bend as shown in FIG. 9(b). , wall 2
is not displaced.

Further, the reinforcing material 4 is equipped with a length adjusting device (bag napft) 7 that can adjust the length, and since the reinforcing material 4 is tensioned by this, it can be rolled as shown in FIG. 2(b). The reinforcing material 4 does not stretch even under pressure, and the wall surface 2 is always on the ground l.
The wall surface 2 is kept perpendicular to the wall surface 2, so that the wall surface 2 is not inclined outward as shown in FIG. 10(b), and therefore the wall surface 2 is not displaced.

In the wall structure according to the present invention, the wall surface 2 is always stably held without being displaced due to the synergistic action of the above-mentioned connecting member 10 and the length adjustment device 7.

〔Effect of the invention〕

As described above, the wall structure of the reinforced earth structure of the present invention is stable with little displacement of the wall surface, and always remains perpendicular to the ground.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a wall structure of a reinforced earth structure according to the present invention, and FIGS. 2(a), (b) and 3(a), (b) are respectively FIGS. 4 and 5 are explanatory diagrams of specific examples of the wall structure of the invention, and FIGS. FIGS. 9(a) and 9(b) are explanatory diagrams of specific examples of connecting members used in the invention; FIGS.
10(a) and 10(b) are process diagrams showing a conventional method of constructing a wall structure, respectively. 1... Ground, 2... Wall surface, 4... Reinforcement material, 4a... End, 5... Back, 7.7a... Length adjustment device, 8... Embankment layer, 9
... Reinforced earth structure, 10... Connection member, 11.
16...Connection part. Patent distributor: Reinforced Earth Engineering Co., Ltd. $1, 2 colors (-e) Note 3, (A) Joy 5

Claims (1)

[Claims] Reinforced soil consisting of a wall surface with a connecting member fixed to the back surface, an embankment layer embanked on the back side of this wall surface, and a reinforcing material laid within this embankment layer and whose end is connected to the connecting member. In the structure, the connecting member is formed with a connecting part that allows the reinforcing member to move vertically, and the end of the reinforcing member is connected to the connecting part so as to be vertically movable, and the reinforcing member has this connecting part. A wall structure of a reinforced earth structure that is equipped with a length adjustment device that can adjust the length.