JP3177331B2 - Structure of anchor reinforced earth wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an anchor reinforced earth wall, and more particularly to a structure of an anchor reinforced earth wall capable of stably supporting an embankment.

[0002]

2. Description of the Related Art As shown in FIG. 2, a reinforcement structure including an embankment, a wall material, a tensile member, a resistance member, and the like is used for maintenance of a base portion and a wall surface of a road or a railway. That is, in FIG. 2, 102 is the ground, 104 is the wall material, and 106 is the embankment. A wall material 1 formed by placing a plurality of wall material blocks 104a in a horizontal direction and vertically stacking them.
04 is the ground 1
02. Back 1 of each wall material block 104a
One end of a tensile member 112 is attached to 10 by a fixture 114. A resistance member 116 such as an anchor plate is attached to the other end of each of the tensile members 112.
18 attached.

In constructing the reinforcing structure as shown in FIG. 2, first, a plurality of wall material blocks 104a, a resistance member 116, and a tension member 11 which are placed in the lowermost portion in the horizontal direction.
2, the embankment 106 is loaded and compacted, and then the plurality of wall material blocks 104a stacked horizontally on the lowermost wall material block 104a and placed horizontally and a resistance member 116
At the same time, the work of mounting the tensile member 112 on the embankment 106 and charging and compacting the embankment 106 is sequentially performed in a layered manner from the lower part to the upper part. Thereby, the wall material 10
The earth pressure acting on the back surface 110 of the fourth member 4
6 is supported by the pull-out resistance.

[0006] The embankment 106 between the wall member 104 and the resistance member 116 includes a main earth pressure portion 120 for generating a horizontal main earth pressure on the wall member 104 and a passive earth pressure for generating a pull-out resistance in the resistance member 116. And a part 122.

As shown in FIG. 3, the resistance of the resistance member 116 is determined by the shear pull-out resistance of the resistance member 116 due to the received earth pressure portion 122 or the active earth pressure by the active earth pressure portion 120 of the resistance member 116 as shown in FIG. And passive earth pressure part 12
2 from the passive earth pressure. The wall material 104 is
The resistance of the resistance member 116 supports the earth pressure acting on the back surface 110.

[0006]

However, in the conventional reinforcing structure, when a viscous soil is used as a backing material for the wall material 104, creep deformation occurs due to a tensile load constantly acting on the resistance member 116. There's a problem. However, for such a problem, there was an inconvenience that cohesive soil could not be used as a backfill material because safety was not confirmed.

In the conventional reinforcing structure, the earth pressure acting on the back surface 110 of the wall member 104 is applied to the plurality of resistance members 1.
Since the structure is supported by 16 pull-out resistors, the setting of the dynamic model is complicated for both internal and external stability.
There was an inconvenience that the design calculation for stability was difficult.

Further, in the conventional reinforcing structure, the resistance of the resistance member 112 is determined by the width A of the embankment 106 between the wall member 104 and the resistance member 112. Therefore,
To obtain sufficient resistance, it is necessary to increase the width A of the embankment 106. For this reason, there has been an inconvenience that construction becomes difficult and costs increase.

[0009]

SUMMARY OF THE INVENTION In order to solve such a disadvantage, the present invention is directed to a method of mounting a plurality of wall material blocks in a horizontal direction, stacking the blocks in a vertical direction, and engaging these wall material blocks. The wall material thus constructed is erected on the ground, and one end side of each tensile member is vertically provided at a predetermined interval on each back surface of each wall material block by each mounting tool. The members are arranged in the horizontal direction, and the other end sides of the tensile members are provided with respective resistance members buried in the embankment oriented in the up-down direction by being respectively attached by the respective fixtures, and the parts of the respective resistance members are provided. The embankment is solidified with a solidifying material to form a back wall of a predetermined width oriented vertically, and a reinforcing earth body is formed between the back wall and the wall material.

[0010]

According to the structure of the present invention, the embankment at each resistance member is solidified with a solidifying material to form a rear wall of a predetermined width oriented in the vertical direction. Since a reinforcing earth body is formed between them, the reinforcing earth body oriented vertically on the back side of the wall material exhibits the function of resisting earth pressure from the outside as a block, stabilizing the embankment Can be supported.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

FIG. 1 shows an embodiment of the present invention and shows the structure of an anchor reinforced earth wall. In FIG. 1, 2
Is ground, 4 is wall material, and 6 is embankment. The wall material 4 configured by placing a plurality of wall material blocks 4a in a horizontal direction and vertically stacking the wall material blocks 4a and engaging the wall material blocks 4a by, for example, a displacement prevention unit (not shown) includes: The lowermost portion is supported by the foundation 8 and is erected on the ground 2. One end side of a tensile member 12 is attached to a back surface 10 of the wall member 4 formed by placing and stacking a plurality of wall member blocks 4a by a mounting member 14 for each wall member block 4a. A resistance member 16 such as an anchor plate buried in the embankment 6 is attached to each other end of the tensile member 12 by a fixture 18 substantially in parallel with the back surface 10 of the wall material 4, that is, in a vertical direction. I have.

When each of the resistance members 16 is embedded in the embankment 6, the embankment 6 at each of the resistance members 16 is subjected to a solidification treatment using a solidifying material P such as cement or lime. This allows
A back wall 20 having a width W is formed in the embankment 6 so as to extend in the vertical direction and substantially parallel to the wall material 4. Also, during embankment 6,
A reinforcing earth body 22 is formed between the wall material 4 and the rear wall 20.

Next, the operation of this embodiment will be described.

When constructing the structure of the anchor reinforced earth wall, first, a plurality of wall material blocks 4a are placed horizontally in the lowermost part, and the back surface 1 of these wall material blocks 4a is placed.
At one end, each one end of each tensile member 12 is attached by a fixture 14.

Then, for example, the embankment 6 is applied in a horizontal direction up to the mounting position of the tensile member 12. Next, the tensile member 1
The resistance member 16 is attached to the other end of the second 2 by the attachment 18. When the tensile member 12 is arranged in the horizontal direction, the resistance member 1
The embankment 6 is dug up at the site where the embankment 6 is located, and a solidifying material P such as cement or lime is kneaded into the embankment 6 to perform a solidification treatment. To compact.

Next, a plurality of lowermost wall material blocks 4
a, each wall material block 4a is placed in the horizontal direction, and the back surface 1 of these wall material blocks 4a is
At one end, each one end of each tensile member 12 is attached by a fixture 14.

Then, similarly, the embankment 6 is applied in the horizontal direction up to the mounting position of the tensile member 12. Next, the tensile member 1
The resistance member 16 is attached to the other end of the second 2 by the attachment 18. When the tensile member 12 is arranged in the horizontal direction, the resistance member 1
The embankment 6 on which the embankment 6 is located is dug up, and a solidifying material P such as cement or lime is kneaded with the embankment 6 to perform a solidification process. A resistance member 16 is erected at the solidified portion, and the embankment 6 is rolled. Press.

This operation is performed sequentially upward, and the wall material 4
Is terminated when the top of the is reached.

As a result, the wall member 4 erected on the ground 2 with the lowermost part supported by the foundation 8 is arranged such that one end sides of the plurality of tensile members 12 are arranged on the back surface 10 in the horizontal and vertical directions. The tension member 12 is attached by an attachment 14.
The other end of each is arranged in a horizontal direction and a vertical direction on a resistance member 16 buried in an embankment 6 that has been solidified substantially in parallel with the back surface 10 of the wall material 4, and each is attached by a fixture 18.
It is supported by the tensile member 12 and the resistance member 16.

At the site where each resistance member 16 is located, the embankment 6 is solidified to form a back wall 20 having a predetermined width W. In addition, a reinforcing earth body 22 is formed between the rear wall 20 and the wall member 4. This reinforcing earth body 22
Of the wall material 4 and the back surface 20 by the tensile member 12 connecting the wall material 4 and the back surface 20 so that the wall material 4 and the back surface 20 are not destroyed by the pressure acting equally on the wall material 4 and the back surface 20. Can be

Accordingly, the external stability of such a structure is such that the structure has a shape capable of resisting the earth pressure from the outside as a block and has a weight capable of resisting the earth pressure from the outside. become.

As a result, the reinforcing earth 22 existing between the wall material 4 and the back wall 20 formed at the resistance member 16 is formed.
Has a structure capable of exhibiting a function of resisting the earth pressure from the outside as a block.

For this reason, according to the structure of the anchor reinforced soil wall of this embodiment, a viscous soil can be used as a backing material for the wall material 4. In other words, in the conventional reinforcing structure, when cohesive soil is used, there is a problem that a creep deformation occurs due to a constant tensile load acting on the resistance member 16, but safety has been confirmed for such a problem. Not.

However, according to the structure of the anchor reinforced earth wall of this embodiment, the rear wall 2 formed at the resistance member 16 is formed.
Since the backfill material is in a state of being restrained by 0,
It can be applied to cohesive soil.

Further, since a simple dynamic model can be set for both the internal stability and the external stability of the structure of the anchor reinforced soil wall, the design calculation for the stability of the embankment 6 can be facilitated.

Further, since the back wall 20 is formed at the resistance member 16 portion, the support state by the resistance member 16 can be made firm, and the stability of the embankment 6 can be further improved.

Further, since the back wall 20 is formed of the solidified material P mixed with the embankment 6, the work of forming the back wall 20 is easy, and other components are not required, and an increase in the number of parts is avoided. , Construction costs and material costs can be reduced.

[0029]

As apparent from the above detailed description, according to the present invention, the embankment of each resistance member is solidified by a solidifying material to form a back wall of a predetermined width oriented vertically. By forming the reinforcing earth body between the back wall and the wall material, the reinforcing earth body exhibits a function of resisting the earth pressure from the outside as a block, and the embankment can be stably supported. As a result, viscous soil or the like can be used as a backfill material for the wall material, design calculations for embankment stability can be facilitated, furthermore, construction can be facilitated and costs can be reduced.

Further, since the back wall is formed at the resistance member portion, the supporting state by the resistance member can be made firm, and the stability of the embankment can be further improved.

Further, since the back wall is formed of a solidified material mixed with the embankment, the work of forming the back wall is easy, and other components are not required. Costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a structure of an anchor reinforced earth wall.

FIG. 2 is a sectional view of a conventional reinforcing structure.

FIG. 3 is an explanatory diagram of resistance by a resistance member.

FIG. 4 is an explanatory diagram of another resistance by a resistance member.

[Explanation of symbols]

 2 Ground 4 Wall material 6 Embankment 8 Foundation 10 Back 12 Tensile member 14 Attachment 16 Resistance member 18 Attachment 20 Back wall 22 Reinforced earth P Solidified material

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-76926 (JP, A) JP-A-3-125720 (JP, A) JP-A-3-59222 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) E02D 17/18 E02D 3/12 102 E02D 5/80 103 E02D 29/02 303

Claims (1)

(57) [Claims] 1. A plurality of wall material blocks are placed in a horizontal direction.
And stack them vertically, and
Click engagement engaged erected the constructed wall material ground by the respective
The Each rear wall member blocks the one end of the tensile member by each fixture in the vertical direction respectively provided at predetermined intervals, each other of the respective tensile member as well as arranging the respective tensile member in the horizontal direction the end side provided each resistor <br/> resistant members buried in the embankment directed vertically mounted respectively by each fixture, the embankment portion of each resistance member was solidification by solidifying agent the rear wall of a predetermined width directed formed vertically Te, the
A structure of an anchor reinforced soil wall, wherein a reinforced soil body is formed between a back wall and the wall material .