JPH03125721A - Retaining wall - Google Patents

Abstract

PURPOSE:To promote execution efficiency and work efficiency by fitting a stop plate connected to one end of a bar-shaped reinforcing material into a wall of wall panels, connecting the wall to the other end of the reinforcing material to provide a resistor, and filling on the rear side of the wall. CONSTITUTION:The base 13 is placed on the foundation 12 to provide a wall panel 1, and a bar-shaped reinforcing material 7 is laid on the foundation 12. After that, the lower half of a stop plate 9 is inserted into a groove 14 on the base 13, and the upper half thereof is fitted into a groove 2 on the wall panel 1. Then, the filling is made on the reinforcing material 7 to form a rolled compaction layer 15. The reinforcing material 7 is buried on the rolled compaction layer 15, the lower half of the stop plate 9 is fitted in the groove 2 of the wall panel 1 and, at the same time, the tip part 8c of a bar 8 is fitted into a groove 4, and the reinforcing material 7 is independently connected to the rear of the wall panel 1. In addition, the filling is made on the reinforcing material 7 to form the rolled compaction layer 15 as well, and the same way is repeated.

Description

[Detailed description of the invention] [Industrial application field] Regarding earth retaining walls with excellent construction properties.

[Conventional technology]

As this type of earth retaining wall, a reinforced earth retaining wall is conventionally known, which is formed by connecting a band-shaped reinforcing material or a grid to the back of a wall and embanking it.

These reinforced earth retaining walls are constructed by burying reinforcing materials in the compaction layer of the embankment, but in order to adapt to the compression of the embankment, the wall panels are fitted with cushioning material between them, etc. It is also necessary to add flexibility.

However, with these systems, the wall displacement is large due to the use of cushioning materials, and when assembling the wall during construction, temporary materials are used to temporarily stand the wall panels upright, or wedges are driven between the upper and lower wall panels. This makes the construction extremely complicated, and the rolling force of the embankment increases the tensile force generated in the reinforcing material, which causes the wall to tilt toward the embankment.

Further, as a reinforcing material, a wavy bent rod-shaped reinforcing material, or a reinforcing material constructed by having a plurality of horizontal bars intersected with each vertical bar, arranged in parallel with each other, and fixed to each other, is used.
Earth retaining walls are also known, which are constructed by connecting these to the back of the wall and embanking them. (Refer to Japanese Patent Application Laid-open No. 1-151616).

However, in the former case, since the reinforcing material is curved in a wave-like manner, the reinforcing material is stretched due to compaction due to the rolling of the embankment and the movement of the soil layer downwards, pushing the wall forward. The body is greatly deformed.

In addition, in the latter case, due to the presence of multiple horizontal bars, excessive tensile stress is generated in the reinforcement material during compaction during rolling compaction or when the soil layer moves downwards, which may cause the reinforcement material to break or cause the wall to collapse. Similar to the above, the wall is significantly deformed, with the wall tilting toward the embankment.

[Problem that the invention seeks to solve]

Therefore, the object of the present invention is to provide an earth retaining structure that reduces stress concentration in the reinforcing material, causes less deformation of the wall, has excellent workability, improves workability, and improves the drawbacks of the above-mentioned known techniques. It's about providing a wall.

[Failure to solve the problem]

In order to achieve the above object, the present invention is constructed by stacking a plurality of wall panels, and grooves are formed at corresponding positions on both end surfaces of the vertically overlapping wall panels that contact each other. A stop plate is connected to one end of the wall body, and a resistor is connected to the other end of the wall body, and by fitting this stop plate so as to span both the corresponding upper and lower grooves, the wall body can be independently attached to the back surface of the wall body. and an embankment layer that is embanked on the back side of the wall and in which the rod-shaped reinforcement is buried, and the resistor of the rod-shaped reinforcement is connected to the anchoring area of the embankment layer. It is characterized by being located in

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

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

As can be seen from these drawings, an arbitrary number of slit-like grooves 2.2...2 are formed along the surface direction of the wall panel 1 on both the upper and lower end surfaces 1a, lb of the wall panel 1, and these A shallow linear groove 4 is formed in the direction perpendicular to the entrance 2a from the middle of the slit-shaped groove 2a of the grooves 2...2 toward the back surface 3 of the wall panel 1, and the slit-shaped groove 2a and the groove 4 to form a J-shape. 5 is a connecting piece. As described later, a plurality of the above-mentioned wall panels 1 are layered together to form a wall IG (see FIG. 7(e) described later).
Grooves 2.2 on both end surfaces 1a, lb which are in contact with each other are formed at positions corresponding to each other. Figures 3 and 4
Each figure is a perspective view of another specific example of the wall panel 1, and the wall panel 1 in FIG. It is formed on both the upper and lower end surfaces 1 all b. In FIG. 4, the wall panel 1 is fitted between a plurality of columns 6.6 adjacent to each other, and in this case, grooves 2.4 are formed on both upper and lower end surfaces 1a, lb of the columns 6, respectively.

5 and 6 each show a perspective view of a specific example of the rod-shaped reinforcing material 7 used in the present invention, in which a stop plate 9 is attached to one end 8a of a straight rod 8 with a nut or the like (not shown). and connect the resistor 10 to the other end 8b with a nut 11 or the like (fifth
Illustration example. In FIG. 6, they are integrally connected. ).

The earth retaining wall of the present invention is constructed using the above-mentioned wall panel 1 and rod-shaped reinforcing material 7 through the steps shown in FIGS. 7(a) to 7(e).

First, a base 13 made of concrete, for example, is installed on the ground 12 as shown in FIG. Lay 7. At this time, the lower half of the stop plate 9 is inserted into the groove 14 on the base 13, and the upper half is fitted into the slit-shaped groove 2 provided on the lower end surface 1b of the wall panel 1, and then the tip portion 81i of the rod 8 is inserted. By fitting into the groove 4, the rod-shaped reinforcing material 7 is independently connected to the back surface 3 of the wall panel 1.

Further, as shown in FIG. 7(b), earth and sand is poured out onto the above-mentioned rod-shaped reinforcing material 7, and is compacted to form an embankment, thereby forming a compacted layer 15 on the back surface 3 side of the wall panel 1. At this time, the rod-shaped reinforcing material 7 is buried inside the embankment layer 15.

Next, as shown in FIG. 7(c), a rod-shaped reinforcing material 7 is further buried on the rolling layer 15.

At this time, attach the lower half of the stopper plate 9 to the upper end surface 1 of the wall panel l.
The rod-shaped reinforcing material 7 is independently connected to the back surface 3 of the wall panel 1 by fitting it into the groove 2 provided in the wall panel a and by fitting the tip end portion 8c of the rod 8 into the groove 4. Further, as shown in FIG. 7(C), earth and sand is poured out on the rod-shaped reinforcing material 7 in the same manner as described above, and the earth and sand are compacted and embanked to form a compacted layer 15 on the back surface 3 side of the wall panel l. do. At this time, the rod-shaped reinforcing material is buried inside the embankment layer 15 as described above.

Next, as shown in FIG. 7(d), another wall panel 1 is laminated on top of the wall panel 1 by fitting the upper half of the stopper plate 9 into the groove 2 provided in the lower end surface 1b. . 7th
As is clear from Figure (d), the grooves 2.2 of the mutually contacting end surfaces 1a1 lb of the vertically overlapping wall panels 1.1 are formed at corresponding positions, and therefore the stop plates 9 are arranged in corresponding positions. Then, in the same manner as shown in FIG. 7(C) above, a rod-shaped reinforcing material 7 is further laid on the rolling layer 15 so as to span both the upper and lower grooves 2.2, and this is placed on the back surface 3 of the wall panel 1. They are connected independently, and then, as shown in FIG. 7(d), earth and sand is poured onto the rod-shaped reinforcing material 7, and the back surface 3 of the wall panel 1 is formed by rolling and embanking.
A rolling layer 15 is formed on the side.

The rod-shaped reinforcing material is buried inside the embankment layer 15 as described above.

Furthermore, as shown in FIG. 7(e), the wall panel 1
Another wall panel 1 is laminated thereon in the same manner as shown in FIG. After independently connecting to the back surface 3 of the wall panel 1, as shown in FIG. By forming the rolling layer 15 in the same manner as above and repeating such steps, a wall body 16 formed by laminating a plurality of wall panels 1.1...1 and a back surface of this wall body 16 are formed. The retaining wall A of the present invention is constituted by the embankment layer 17 buried in the earth retaining wall A of the present invention. 18 is a stop member, 19 is a fixing area, 20 is a loosening area, and 21 is a sliding surface.

In the present invention described above, the rod-shaped reinforcing material 7 is buried in the embankment layer 17 such that the resistor 10 is located in the fixed region 19 with the sliding surface 21 as the boundary, and the rod 8 is located in the loosened region 20. Ru.

[Effect]

In the above-mentioned present invention, the reinforcing material is a rod-shaped reinforcing material,
The rod-shaped bodies are connected independently to the back of the wall, and the resistors are located in the anchoring area, so that the rod-shaped bodies are located independently in the loosened area without any relation to each other. Even when subjected to compression during compression or downward movement of the soil layer, there are only mutually independent rod-like bodies with low resistance in the loosened region, so that no excessive tensile force is generated in the reinforcement, and therefore , the reinforcing material does not break, and there is little deformation of the wall, such as the wall tilting toward the embankment, resulting in stability. For this reason, when stacking wall panels, vertical grooves corresponding to each other are provided on both end surfaces of the wall panels that are in contact with each other, and the stacking is performed simply by fitting stop plates made of rod-shaped reinforcing materials so as to span these vertical grooves. The wall is constructed, and there is no need for temporary materials as in the past, and construction is simple and workability is improved.

〔Effect of the invention〕

As described above, the retaining wall of the present invention is a practically useful invention because stress concentration is less likely to occur in the reinforcing material (and the wall body is less deformed), and furthermore, it has excellent workability and improves workability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the wall panel used in the present invention from the -member side, and FIG. 2 is a longitudinal cross-sectional view thereof. l
and FIG. 4 are perspective views of other specific examples of wall panels, FIGS. 5 and 6 are perspective views of one specific example of the rod-shaped reinforcing material used in the present invention, and FIG.
Figures (a) to (e) are process charts for constructing the earth retaining wall of the present invention. 1. Wall panel, 1a. Upper end surface, 1b. Lower end surface, 2. Groove, 3. Back surface, 7. Rod-shaped reinforcement material, 8
... Rod, 9. Stopping plate, 10. Resistor, 12, 16. Wall, 17. Embankment layer, 19. Anchoring area, 20.
... Loose area, 21. Slip surface, A. Earth retaining wall. ·ground,

Claims (1)

[Claims] Consisting of a plurality of stacked wall panels, each of the vertically overlapping wall panels has a wall body in which grooves are formed at corresponding positions on both end surfaces that contact each other, and a stop plate is connected to one end, and a rod-shaped reinforcing member, the other end of which is connected to a resistor, and which is independently connected to the back surface of the wall body by fitting the stop plate across the corresponding upper and lower grooves, and the back surface of the wall body. An earth retaining wall comprising an embankment layer that is embanked on the side and in which the rod-shaped reinforcing material is buried, and a resistor of the rod-shaped reinforcing material is located in an anchoring area of the embankment layer.