JPH0790865A - Reinforcing earth slide protection wall - Google Patents

Abstract

PURPOSE:To provide a reinforcing earth slide protective wall by which deformation is hardly caused and strength is extremely stabilized by forming integrally upper and lower wall body panels and these wall body panels and a banking material. CONSTITUTION:Plural reinforcing reinforcements 8 are inserted continuously in vertically adjacent wall body panels 5 in the wall body panels 5 stacked in plural stages, and mortar is filled around the reinforcing reinforcements 8, and a rigid wall body composed of plural wall body panels 5 is constituted. Anchors 10 are buried as reinforcing members in a banking material 6 banked up in the back parts of the wall body panels 5, and the base end side part of these anchors 10 are connected to the wall body panels 5, and a reinforcing earth slide protection wall is constructed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is constructed by stacking a plurality of wall panels while filling their backs with a filling material and connecting them with a plurality of reinforcing members in the filling material. Reinforced earth retaining wall.

[0002]

[Prior Art and Problems to be Solved by the Invention] FIG.
Shows an example of a conventional reinforced earth retaining wall. In the drawing, reference numeral 1 is a wall body panel that is stacked on a concrete cloth foundation formed below the ground surface to form a wall body, and 2 is this wall body. Fill material placed on the back of the panel 1, and reference numeral 3 are connected to each wall panel 1 and deeply anchored in the fill material 2 to fix each wall panel 1 in the fill material 2. It is an anchor or a strip-shaped or grit-shaped reinforcing member.

An elastic material (not shown) is interposed between the adjacent wall panels 1 and 1 so that they can be flexibly deformed.

The conventional reinforced earth retaining wall is constructed as described above. However, in this type of reinforced earth retaining wall, the wall panel 1 is deformed by earth pressure, or the connecting portion with the anchor 3 is loosened, Due to elastic deformation of the anchor 3 due to earth pressure, and further due to increase of earth pressure at the time of rolling and filling of the embankment material to increase the earth pressure, the entire wall body is deformed or overhanged. There was a problem that it was pushed or pushed to the front.

As described above, since the conventional reinforced earth retaining wall is constructed by combining a plurality of wall panels 1 so that they can be displaced in a mosaic pattern, the displacement of the wall itself is large. It was stable.

Further, when a wall panel integrally formed in a size corresponding to the entire height of the wall is installed, and then the reinforcing members are connected and the embankment material is repeatedly compacted, the once displaced wall is in the middle. Since it is impossible to correct it, the displacement increases as the embankment material is piled up, making it difficult to construct a stable earth retaining wall.

The present invention has been made in order to solve the above problems, and the displacement can be achieved by integrating the upper and lower wall panels and further integrating the wall panel and the embankment material. It is an object of the present invention to provide a reinforced earth retaining wall that is stable and has a small amount of displacement with a small number of reinforcing members.

[0008]

In order to achieve the above-mentioned object, the reinforced earth retaining wall according to the present invention is the same as the conventional reinforced earth retaining wall in FIG. 8 as shown in FIG. 7 (a). In order to withstand the horizontal earth pressure exerted by the upper layer F in the slip plane with respect to the body panel A, the reinforcement member E must be extended further than the slip surface C, so that the length of the reinforcement member E is long. It was noted that there was a problem that the cross section of the wall panel A was increased and the wall panel A was easily displaced.

To solve this problem, if the wall B is made of a rigid concrete panel as shown in FIG. 7 (b), a slip surface C is not generated inside the wall B and the reinforcing member E is virtually slipped. Even in the plane, since the sand in Block D functions as a mass that is integrated as one block,
The block D integrally resists the back surface earth pressure.

Therefore, the number of reinforcing members E decreases,
Alternatively, as shown in FIG. 7 (c), it has been found that the reinforcing member E of a size corresponding to the shortage of the size of the block D may be sparsely extended.

In order to further improve the above functions,
Reinforcement member E can be tightly connected by using anchor bolts with anchor plates, or a reinforcement member that restrains lateral movement of soil using a reinforcement member that combines longitudinal and transverse reinforcing bars A method of using a solidifying material as a member or the like can be added.

Therefore, the reinforced earth retaining wall according to the present invention is
Multiple wall reinforcement panels are inserted into the upper and lower wall panels that are adjacent to each other in the wall panels stacked in multiple layers, and the periphery of the reinforcement bars is filled with mortar to form multiple wall panels. The present invention is characterized in that a rigid wall member is formed, and a reinforcing member is installed in a filling material placed on the back of the wall member panel, and the reinforcing member is tightly connected to the wall member panel.

[0013]

【Example】

Example 1. 1 to 6 show an embodiment of a reinforced earth retaining wall according to the present invention. In the drawings, reference numeral 4 is a cloth foundation formed by cast-in-place concrete below the ground surface at the bottom of the ground. A wall body panel that is stacked on the foundation 4 and constitutes a wall body that is rigid as a whole, 6 is an embankment laid on the back of the wall body panel 5, and 7 is a penetrating through each wall body panel 5 in the vertical direction. The reinforcing bar insertion holes 8 formed by the above are raised from the cloth foundation 4 and inserted into the reinforcing bar insertion holes 7 of the vertically adjacent wall body panels 5 to integrally connect the upper and lower wall body panels 5, 5. Reinforcing bar, 9 is a filling material such as mortar or concrete that fills the reinforcing bar insertion hole 7 of each wall panel 5 and integrates the reinforcing bar 8 and each wall panel 5, 10 is inserted deep in the embankment 6 Anchor as a reinforcing member for fixing each wall panel 5 Reference numeral 11 is a connecting metal fitting for connecting the base end side of the anchor 10 to the reinforcing reinforcing bar 8, 12 is an anchor plate for fixing the tip end of the anchor 10 so as not to fall deep into the embankment 6, and reference numeral 13 is the anchor plate. An anchor nut for fixing 12 to the tip of the anchor 10.

The wall panel 5 is formed in a rectangular plate shape elongated in the lateral direction from the precast concrete plate. Further, the reinforcing bar insertion holes 7 are formed at predetermined intervals in the longitudinal direction of the wall panel 5, and after the reinforcing bar 8 is inserted, a filling material 9 such as concrete or mortar can be sufficiently filled around the reinforcing bar 8. As described above, the conical shape is formed so as to be slightly thicker and gradually decrease in diameter from the upper end toward the lower end.

Further, at both upper and lower ends of the wall panel 5, convex portions 5a projecting in a substantially arcuate cross-section which can engage with each other so that the upper and lower wall panels 5 do not laterally shift when stacked.
And a recess 5b which is recessed in a substantially arcuate shape in cross section are formed continuously in the lateral direction of the wall panel 5.

Further, a rectangular notch 14 capable of accommodating the connecting fitting 11 is formed at the position where the reinforcing bar insertion hole 7 is formed at the upper end of each wall panel 5.

A plurality of reinforcing reinforcing bars 8 are firmly anchored to the cloth foundation 4 and continuously inserted in the reinforcing bar insertion holes 7 of each wall panel 5 in the vertical direction, and the periphery thereof is filled with mortar. A rigid wall body composed of one wall panel 5 is formed.

The anchor 10 is inserted deep into the embankment 6, and the base end side thereof is connected to the reinforcing bar 8 by a connecting fitting 11. The connecting fitting 11 may be directly embedded in the wall panel 5.

The anchor plate 12 is attached to the tip of the anchor 10, and the anchor nut 13 is attached to the anchor 10.
Is screwed into a male screw portion 10a formed at the tip of the.

The connecting fitting 11 is installed in the notch 14, and has a U bolt 11a hooked on the reinforcing bar 8 and a connecting plate 11c attached between the male screw portions 11b, 11b at the left and right ends of the U bolt 11a. , A plurality of connecting nuts 11d, 11d screwed to the male screw portions 11b, 11b and fixing the connecting plate 11c to the U bolt 11a (FIG. 6).
reference).

A through hole 11e is formed at the center of the connecting plate 11c.
The anchor bolt 10 is penetrated through the through hole 11e, and the fixing nut 15 is screwed into the male screw portion of the penetrating portion.

Next, the method for constructing the reinforced earth retaining wall according to the present invention will be explained step by step.

First, the cloth foundation 4 is formed in the ground, and the reinforcing reinforcing bars 8 are erected on the cloth foundation 4 at predetermined intervals.
In this case, the installation intervals of the reinforcing bars 8 are made to match the intervals of the reinforcing bar insertion holes 7 of the wall panel 5.

Next, as the first-stage wall body panel, a plurality of wall body panels 5 are stacked on the cloth foundation 4 while abutting each other in the longitudinal direction of the cloth foundation 4. Further, the reinforcing bar 8 raised from the cloth foundation 4 is inserted into the reinforcing bar insertion hole 7 of each wall panel 5, and the upper end portion of the reinforcing bar 8 is projected from the reinforcing bar insertion hole 7, respectively. Then, each reinforcing bar insertion hole 7 is filled with a filler 9 such as mortar or concrete so that the wall panel 5 and the reinforcing reinforcing bar 8 are integrated and the upper and lower wall panels 5, 5 are integrated.

Next, the embankment material 6 is piled up as a first layer on the back part of the first-stage wall panel 5 while sufficiently rolling it. The filling material 6 is filled up to almost the upper end while leaving a space behind the wall panel 5.

Next, a plurality of anchors 10 are installed as the first-stage anchors on the embankment material 6. In addition, in the notch 14 at the upper end of the wall panel 5, the connection fitting 11
Then, the proximal end portion of the anchor 14 is connected to the connecting fitting 11 (see FIG. 6). Then, after spreading the soil on the anchor plate 12 and rolling it, the connection nut 15 or 11d screwed to the male screw portion on the base end side of the anchor 10 is tightened to tilt or project the wall panel 5. While adjusting the condition, the wall panel 5 and the embankment material 6 are integrated. Moreover,
The filling material 6 is filled up to the space behind the wall panel 5 and rolled.

Next, a new wall body panel 5 is stacked on the first-stage wall body panel 5 as a second-stage wall body panel while abutting them in the longitudinal direction of the cloth foundation 4. Also in this case, similarly to the above, the reinforcing bar 8 is inserted into the reinforcing bar insertion hole 7, and the upper end portion of the reinforcing bar 8 is projected from the reinforcing bar insertion hole 7. Further, the concavo-convex portions 5a and 5b of the upper and lower wall panel 5 are fitted together. Then, each reinforcing bar insertion hole 7 is filled with a filler 9 such as mortar or concrete.

Next, the backing material of the second-stage wall panel 5 is piled up as a second layer while the embankment material 6 is sufficiently compressed. As in the case described above, the filling material 6 is filled up to almost the upper end while leaving a space behind the wall panel 5.

Next, a plurality of anchors 10 are newly installed as second-stage anchors on the embankment material 6, and the connecting metal fitting 11 is newly provided in the notch 14 at the upper end of the wall panel 5. To install. Then, the anchor 10 is attached to the connecting fitting 11.
The base end side portions of are connected (see FIG. 6). Anchor plate
After uncovering the soil on 12 and rolling it to fix the anchor plate 12, tighten the connecting nut 15 or the bolt 11d screwed to the male screw part on the base end side of the anchor 10 to tighten the wall panel 5 of the wall panel 5. The wall panel 5 and the embankment material 6 are integrated while adjusting the inclination and the appearance. Then, the filling material is filled up to the space behind the wall panel 5 and rolled.

In the same manner, while fixing the third and fourth stage wall body panels 5, ... With a plurality of anchors 10, the back portion of the wall body panel 5 is filled with the filling material 6. While stacking up to a predetermined height.

When the wall panels 5 are stacked, a method of stacking the joints between adjacent wall panels 5, 5 so that the joints are continuous in the vertical direction (potato joint), and the joints are not continuous in the vertical direction. It goes without saying that any of the stacking methods (breakage joints) (see FIG. 2) can be implemented.

The embankment material 6 means not only earth and sand, but also a lightweight block such as Styrofoam or foam mortar.

Further, as the reinforcing member 10, in addition to the anchor, a belt-shaped reinforcing member, various grit, geotextile, wire mesh, etc. are used. Further, as the embankment material 6, solidified soil mixed with solidified material may be used.

[0034]

As described above, according to the reinforcing earth retaining wall according to the present invention, the plurality of stacked wall body panels are integrally connected to each other in the vertical direction by the plurality of reinforcing reinforcing bars. It forms a rigid wall surface, and each wall panel is firmly fixed in the embankment filled on the back side of the wall panel with multiple anchors, and it is tightly connected to the rigid wall surface without causing any looseness. Moreover, the displacement of the wall surface does not occur. For this reason, the reinforcing earth retaining wall has little displacement and is extremely stable in strength.

Further, since the integrated panel corresponding to the entire height of the wall body is not used, it is possible to correct the displacement during construction and it is possible to construct an integrated rigid wall body.

[Brief description of drawings]

FIG. 1 is a plan view of a reinforced earth retaining wall showing a state in which a wall panel, an anchor and a connecting fitting are installed.

FIG. 2 is a partially cutaway front view of the reinforced earth retaining wall shown in FIG.

FIG. 3 is a partial vertical cross-sectional view of the reinforced earth retaining wall shown in FIG.

FIG. 4 is a vertical sectional view of a reinforced earth retaining wall.

FIG. 5 is a perspective view of a wall panel.

FIG. 6 is a plan view showing an installed state of a connecting fitting.

7 (a), (b) and (c) are vertical sectional views of the reinforced earth retaining wall showing the action of the reinforced earth retaining wall.

FIG. 8 is a vertical sectional view showing an example of a conventional reinforced earth retaining wall.

[Explanation of symbols]

1 ... Wall panel, 2 ... Embankment material, 3 ... Anchor (reinforcing member), 4 ... Cloth foundation, 5 ... Wall panel, 6 ... Embankment material, 7
… Reinforcing bar insertion hole, 8… Reinforcing bar, 9… Filler, 10… Anchor (reinforcing member), 11… Connecting metal fitting, 12… Anchor plate, 13… Anchor nut, 14… Notch part, 15… Connecting nut.

Claims (1)

[Claims] 1. A reinforcement constructed by stacking a plurality of wall panels while filling the back of the wall panel with a filling material and fixing the filling material in the filling material with a plurality of reinforcing members. In the earth retaining wall, a plurality of reinforcing bars are continuously inserted into the vertically adjacent wall panels in the wall panel, and a plurality of wall panels are fixed by fixing the periphery of the reinforcing bars with mortar. A reinforced earth retaining wall, which comprises a rigid wall body having the above-mentioned structure, in which the reinforcing member is embedded in the filling material, and the reinforcing member is connected to the wall panel.