JPH0672424B2 - Earth retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a soil retaining wall formed by embedding earth by connecting a reinforcing member to the back surface of a wall body formed by laminating a plurality of wall panels.
In particular, the present invention relates to a retaining wall for retaining soil which has little deformation of the wall body and is excellent in workability.

[Conventional technology]

As a soil retaining wall of this type, conventionally, a reinforced soil retaining wall is known in which a belt-shaped reinforcing material and a grid are connected to the back surface of a wall body to embank.

These reinforced soil retaining walls are constructed by embedding a reinforcing material in the compaction layer of the embankment, but also on the wall panels, such as by attaching a cushion material between the wall panels to accommodate the compression of the embankment. It is necessary to give flexibility.

However, the displacement of the wall is large due to the use of the cushioning material between the wall panels, and the wall panels are temporarily erected by using temporary materials during the wall assembly during construction,
It is necessary to drive a wedge between the upper and lower wall panels, which makes the construction very complicated, and the tensile force generated on the reinforcing material by the rolling compaction of the embankment increases. Will tilt to.

Furthermore, as a reinforcing material, a bar-shaped reinforcing material that is bent in a wave shape, or a reinforcing material that is configured by fixing a plurality of horizontal bars to one straight vertical bar by crossing, juxtaposing, and adhering to each vertical bar,
There is also known a soil retaining wall which is constructed by embedding earth by connecting these to the back of the wall. (See Japanese Patent Laid-Open No. 1-151616).

However, in the former case, since the reinforcing material is bent in a wavy shape, the reinforcing material extends due to compression due to rolling compaction of the embankment and downward movement of the soil layer, and the wall body is extruded to the front surface. Deformation of the body is large.

In the latter case, because of the existence of multiple horizontal bars, excessive tensile stress occurs in the reinforcing material during compression during rolling or when the soil layer moves downward, and the reinforcing material breaks or the wall Similar to the above, the wall body is largely deformed such that the body is inclined toward the embankment side.

[Problems to be solved by the invention]

Therefore, the object of the present invention is to prevent the concentration of stress on the reinforcing material, and to reduce the deformation of the wall body, the workability is improved further workability is improved, the soil retaining wall which has improved the drawbacks existing in the above-mentioned known technology. To provide.

[Means for solving problems]

In order to achieve the above-mentioned object, according to the present invention, a plurality of wall panels are laminated, and both end surfaces of the wall panels which are vertically overlapped with each other have slit-shaped lateral grooves at positions corresponding to each other. Is formed along the surface direction of the wall panel, and a slit-shaped vertical groove is formed from the middle of the entrance of the horizontal groove in a direction perpendicular to the wall panel surface and toward the back surface of the wall panel. Is a wall body filled with a cushion material, a stopper plate is connected to one end and a resistor body is connected to the other end, and the stopper plate is fitted so as to straddle the corresponding upper and lower lateral grooves. A reinforcing member connected to the back surface of the wall body by arranging a portion along the vertical groove filled with the cushioning material, and an embankment on the back surface side of the wall body, in which the reinforcing material is embedded. Embankment layer It consists, characterized by comprising formed deeper than the length of the stop plate to the lateral groove is fitted.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a perspective view of a specific example of the wall panel used in the present invention, and FIG. 2 shows a vertical sectional view thereof.

As can be seen from these drawings, the upper and lower end surfaces 1a, 1b of the wall panel 1 are provided with slit-shaped lateral grooves 2, 2, ...
It is formed along the surface direction of the wall panel 1, and further vertically from the middle of the slit-shaped inlets 2a of the lateral grooves 2, 2 ... 2 toward the back surface 3 of the wall panel 1 and in the direction perpendicular to the surface of the wall panel 1. The groove 4 is formed, and the slit-shaped lateral groove 2 and the vertical groove 4 form a “T” shape. The depth of the lateral grooves 2, 2 ... 2 is such that when a stopper plate 9 described later is fitted therein, a clearance a is formed below the stopper plate 9, as clearly shown in FIG.
That is, it is formed deeper than half the length of the stop plate 9. Further, the vertical grooves 4, 4, ... Are filled with a cushion material 4a such as foamed polyurethane resin. 5 is a connecting piece.
As described below, the wall panel 1 described above is formed by stacking a plurality of these to form a wall body 16 (see FIG. 9 (e) described below). The lateral grooves 2 and 2 and the longitudinal groove 4 on both end surfaces 1a and 1b
4 are formed at positions corresponding to each other. 3 and 4 are perspective views of other concrete examples of the wall panel 1, wherein the wall panel 1 of FIG. 3 is constructed by fixing any number of columns 6 to the back surface 3, and the lateral groove 2 , And the vertical groove 4 are formed on both upper and lower end surfaces 1a, 1b of the pillar 6. FIG. 4 is constructed by fitting the wall panel 1 between a plurality of columns 6 adjacent to each other, and in this case also, the lateral groove 2 and the vertical groove 4 are formed on the upper and lower end surfaces 1a and 1b of the column 6, respectively. To be done.

5 to 8 each show a perspective view of a specific example of the reinforcing member 7 used in the present invention. In the examples of FIGS. 5 and 6, a stopper plate is provided at one end 8a of the linear rod 8. 9 is connected by a nut or the like (not shown), and the resistor 10 is connected to the other end 8b by a nut 11 or the like (the example of FIG. 5, which is integrally connected in FIG. 6). To be done. Further, in the example of FIG. 7, one end 8a of the linear rod 8 is passed through a vertically long pore 9a formed in the stopper plate 9 so as to be vertically movable by the vertical width of the pore 9a. Further, in the example shown in FIG. 8, a plurality of rods 8, 8 ... 8 are used to connect an elongated stop plate 9 to one end 8a of the tension member X formed in a mesh shape by welding or the like, and Although not shown, the other end is formed by connecting the same resistor 10 as described above in the same manner as described above.

The earth retaining wall of the present invention is the wall panel 1 and the reinforcing member 7 described above.
Is constructed through the steps shown in FIGS. 9 (a) to 9 (e).

First, as shown in FIG. 9 (a), a base 13 made of concrete, for example, is installed on the ground 12, and then this base is used.
Install the wall panel 1 on 13 and the reinforcement 7 on the ground 12.
To lay. At this time, the lower half of the stop plate 9 is a groove on the base 13.
Insert it into 14 and the upper half is the lower end surface of the wall panel 1.
It is fitted in the slit-shaped lateral groove 2 provided in 1b, and the tip portion 7a of the reinforcing material 7 is further fitted along the vertical groove 4 to the cushion material 4a.
The reinforcing member 7 is connected to the back surface 3 of the wall surface panel 1 by being placed in contact with.

Further, subsequently, as shown in FIG. 9 (b), earth and sand are spread on the above-mentioned reinforcing material 7 and compacted to embank it to form a compaction layer 15 on the back surface 3 side of the wall surface panel 1. At this time, the reinforcing material 7 is embedded inside the compaction layer 15.

Then, as shown in FIG. 9C, the reinforcing material 7 is further laid on the compaction layer 15.

At this time, the lower half of the stopper plate 9 is placed on the upper end surface 1a of the wall panel 1.
The reinforcing material 7 is connected to the back surface 3 of the wall surface panel 1 by fitting it in the lateral groove 2 provided in the upper wall of the wall panel 1 and arranging the tip portion 7a of the reinforcing material 7 on the cushion material 4a along the vertical groove 4. Further, subsequently, as shown in FIG. 9 (c), earth and sand are sprinkled on the reinforcing material 7 in the same manner as described above, and the soil is compacted by embossing to form the compaction layer 15. At this time, the reinforcing material is embedded inside the embankment layer 15 as described above.

Next, as shown in FIG. 9 (d), another wall panel 1 is mounted on the wall panel 1, and the upper half of the stopper plate 9 is fitted into the lateral groove 2 provided in the lower end surface 1b and the reinforcing member 7 The tip portion 7a is laminated on the cushion material 4a by arranging it along the vertical groove 4. As is apparent from FIG. 9 (d), the lateral grooves 2 and 2 and the vertical grooves 4 and 4 of the mutually overlapping end faces 1a and 1b of the wall panels 1 and 1 which are vertically stacked are formed at positions corresponding to each other. Therefore, the stopper plate 9 is fitted so as to straddle the corresponding upper and lower lateral grooves 2, 2 and the tip portion 7a of the reinforcing member 7 is arranged so as to be tightly attached to the corresponding upper and lower cushion members 4a, 4a. As a result, the reinforcing material 7 is connected to the rear surface 3 side of the wall surface panel 1. Then, in the same manner as in FIG. 9 (c), the reinforcing material 7 is further laid on the compaction layer 15, and the reinforcing material 7 is laid on the rear surface 3 of the wall surface panel 1.
, And subsequently, as shown in FIG. 9 (d), the earth and sand are sprinkled on the reinforcing material 7, and the soil is compacted by rolling.
The compaction layer 15 is formed. Reinforcing material 7 is the same as the above, the embankment layer 15
Is buried inside.

Further, as shown in FIG. 9 (e), the wall surface panel 1
Further, another wall panel 1 is laminated thereon in the same manner as in FIG. 9 (d), and then the reinforcing material 7 is further laid on the compaction layer 15, and this is carried out in the same manner as described above. After being connected to the back surface 3, subsequently, as shown in FIG. 9 (e), the earth and sand are sprinkled on the reinforcing material 7, and the soil is compacted by embossing to form the compaction layer 15 in the same manner as described above. By repeating such steps, a wall body 16 formed by stacking a plurality of wall surface panels 1, 1, ... 1 and reinforcing members 7, 7, ... 7 connected to the back surface 3 of the wall body 16, The earth retaining wall A of the present invention is constituted by the embankment on the back surface 3 side of the wall body 16 and the embankment layer 17 in which the reinforcing material 7 is embedded. 18 is a stop member, 19 is a fixing area, 20 is a loosening area, and 21 is a slip surface.

In the present invention described above, the reinforcing material 7 is embedded in the embankment layer 17 so that the resistor 10 is located in the fixing region 19 with the slip surface 21 as a boundary.

[Action]

In the above-mentioned present invention, the reinforcing member is connected to the back surface of the wall body by fitting the stopper plate so as to straddle both upper and lower lateral grooves corresponding to the upper and lower sides, and disposing the tip end portion along the vertical groove filled with the cushion material. To be done. At this time, since the lateral groove is formed deeper than the stopper plate to be fitted, a gap is formed below the stopper plate.

The reinforcing material connected in this way can move downward by the gap of the stop plate due to the contraction of the cushion material even if it is compressed during rolling or moves downward in the soil layer. Therefore, the reinforcing member is not broken, and the wall body is not deformed such that the wall body is inclined toward the embankment side, so that the wall body is stabilized. For this reason, when stacking the wall panels, upper and lower lateral groove and vertical groove corresponding to each other are provided on both end surfaces of the wall panels which are vertically overlapped with each other, and a stopper plate of a reinforcing member is fitted so as to straddle the upper and lower horizontal grooves, and The wall is constructed by simply stacking the tip of the reinforcing material along the vertical groove filled with the cushioning material to build a wall body, which does not require temporary materials as in the past and is easy to construct and easy to work with. Be improved. It is also possible to make fine adjustments so that the position of the reinforcing material matches the height of the embankment surface during construction.

〔The invention's effect〕

As described above, the soil retaining wall of the present invention is a practically useful invention because stress concentration is unlikely to occur in the reinforcing material, the deformation of the wall body is small, the workability is excellent, and the workability is improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a specific example of a wall panel used in the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIGS. 3 and 4 are views of other specific examples of the wall panel. FIG. 5 is a perspective view, FIG. 5 to FIG. 8 are perspective views of a specific example of the reinforcing material used in the present invention, and FIG. 9 is (a).
(E) is process drawing for constructing the earth retaining wall of this invention. 1 ... Wall panel, 1a ... Top surface, 1b ... Bottom surface, 2 ... Horizontal groove, 3 ... Rear surface, 4 ... Vertical groove, 4a ... Cushion material, 7 ... Reinforcing material, 7a ... Tip Part, 8 ... Rod, 9 ... Stop plate, 10 ... Resistor, 12 ... Ground, 16 ... Wall, 17 ... Embankment layer, 19 ... Fixing area, 20 ... Loose area, 21 ... … Sliding surface, A …… Soil retaining wall.

Claims (1)

[Claims] 1. A plurality of wall panels are stacked, and slit-shaped lateral grooves are formed along the plane direction of the wall panels at corresponding positions on both end surfaces of the wall panels which are vertically overlapped with each other and contact each other. And a slit-shaped vertical groove is formed from the middle of the entrance of the lateral groove in a direction perpendicular to the wall panel surface and toward the back surface of the wall panel,
In this vertical groove, a wall body filled with a cushion material, a stop plate is connected to one end, and a resistor is connected to the other end, and the stop plate is fitted so as to straddle the corresponding upper and lower horizontal grooves. , And a reinforcing material connected to the back surface of the wall body by arranging the tip portion along the vertical groove filled with the cushion material, and embankment on the back surface side of the wall body,
Composed of a fill layer in which the reinforcing material is embedded,
An earth retaining wall formed by forming the lateral groove deeper than the length of the retaining plate to be fitted.