JPH022770Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a vegetation shelf in an earth retaining wall.

[Prior art]

2. Description of the Related Art Conventionally, there is an earth retaining method in which concrete blocks are piled up along the ground and the concrete blocks are used to prevent the ground from collapsing. In this construction method, an arch portion may be formed in the retaining wall by using a block having an arcuate portion in at least a portion of its cross-sectional shape.

The arch portion has a greater resistance to the bending moment of the ground than when a flat block is used, and effectively fulfills the earth retaining function.

[Problems to be solved by this idea]

The problem with such an earth retaining wall is that compared to a flat earth retaining wall, the space at the deep end of the arch is wasted, and the external appearance is not good.

[Means for solving problems]

This idea consists of protruding from the front of the earth retaining block a shelf formed into an L-shaped cross section by the bottom plate and side plates, and forming a soil replenishment groove. The arched portion of the block is effectively utilized to improve the appearance.

〔Example〕

This invention will be explained in detail below based on an embodiment shown in the drawings.

In the figure, 1 is a retaining block, which has a rectangular shape in the front view, but the cross-sectional shape has a columnar base 2 in the middle between the left and right, and wing parts 3, 3 protrude from the base 2 symmetrically on the left and right, respectively. ing. The wing parts 3, 3 are arcuate, and the thickness becomes thinner toward the tip.

A plurality of vertical reinforcing members 4 are embedded in the base 2, and anchor insertion holes 5 penetrate horizontally in the front and back directions.

Also, the PC that exits from the base 2 to the ends of the wing parts 3 and 3
Steel material insertion holes 6, 6 penetrate therethrough. That is, the insertion hole 6 penetrates from the left side of the base 2 toward the tip of the right wing section 3 and from the right side of the base 2 toward the tip of the left wing section 3. A plurality of insertion holes 6, 6 penetrating either left or right are also formed at appropriate intervals vertically.

The earth retaining block 1 having the above-mentioned configuration is erected on the ground 7. Earth retaining block 1 is wing part 3
Two earth retaining blocks 1, 1 that are continuous in the left and right direction and adjacent to each other in the left and right direction, with the overhanging side facing the ground 7.
are integrated with PC steel material 8. Stranded steel wire is used as the PC steel material 8 in the embodiment. The PC steel material 8 is inserted through the insertion hole 6 from the base 2 of one earth retaining block 1 and comes out from the end of the wing part 3, and then inserted into the insertion hole 6 from the end of the wing part 3 of the other earth retaining block 1, and then passed through the insertion hole 6 from the end of the wing part 3 of the other earth retaining block 1. get out of it. In the above manner, the PC steel material 8 is stretched over both retaining blocks 1 and 1,
Both ends are tightened and fixed using fixing tools 9 such as nuts or wedges.

As described above, the left and right earth retention blocks 1 and 1 are integrated, but the left earth retention block 1 is further integrated with the earth retention block 1 adjacent to the left, and the right earth retention block 1 is further integrated with the earth retention block 1 adjacent to the right. , a plurality of retaining blocks 1 that are continuous from side to side are connected in a chain.

The wing parts 3 and 3 of the left and right retaining blocks 1 and 1 form an arch part A that is recessed toward the ground 7 side. This arch section A is used to form a shelf section B.

That is, the retaining blocks 1 are stacked vertically, and the shelf block 10 is sandwiched between the upper and lower retaining blocks 1 to form a vegetation shelf B.

The shelf block 10 has a bottom plate 11 and a side plate 1 that form a right angle.
2, it is formed into an L-shaped cross section. Both ends of this shelf block 10 are located between the bases 2, 2 of the upper and lower retaining blocks 1, 1, respectively, and the middle part is located between the wing parts 3, 3 and held therebetween. Since the middle part is an arch part A, the bottom plate 11 is held in an arc shape, and the shelf block 10 is firmly fixed between the retaining blocks 1 over the entire length in the width direction.

The soil ditch 1 is formed by the bottom plate 11 and side plate 12 of the shelf block 10 and the wing plates 3, 3 of the earth retaining blocks 1, 1.
3 is formed, but it is sufficient to add soil to this soil trench 13 and grow vegetation.

In the earth retaining block 1, the end of an anchor 14 such as a lock bolt driven into the ground is inserted into the anchor insertion hole 5 of the earth retaining block 1, and is fixed by a fixing device 15.

As shown in FIG. 6, this invention also allows the shelf B to be formed when using a retaining block 1 having an arcuate intermediate section and a bow-shaped cross section.

Further, as shown in FIGS. 7 to 10, a shelf B may be provided integrally with the retaining block 1.
In this case, the shelf B serves as reinforcement for the earth retaining block 1 itself, allowing it to withstand earth pressure more effectively. In particular, the block 1 shown in FIGS. 8 and 10 has a shelf B provided in the middle between the top and bottom, which is effective for reinforcement.

[Effect of idea]

This idea has the above-mentioned configuration, and since a shelf is formed between the upper and lower retaining blocks for vegetation, the space in the arch can be used effectively.
Moreover, the appearance can be improved.

Furthermore, if the shelf is formed integrally with the earth retaining block, the earth retaining block will be reinforced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of this invention, Fig. 2 is a partial cross-sectional view, Fig. 3 is a front view, Fig. 4 is a cross-sectional view, and Fig. 5 is a V-V of Fig. 4. 6 is a cross-sectional view of another embodiment, and FIGS. 7 to 10 are perspective views of other embodiments of the retaining block. A... Arch part, B... Shelf part, 1... Earth retaining block, 2... Base part, 3... Wing part, 4... Reinforcement material,
5... Anchor insertion hole, 6... PC steel material insertion hole,
7... Earth, 8... PC steel material, 9... Fixture, 1
0...shelf block, 11...bottom plate, 12...side plate, 13...groove, 14...anchor.

Claims (1)

[Scope of Claim for Utility Model Registration] An earth retaining wall in which earth retaining blocks are erected continuously vertically and horizontally on the ground to form an arched section with an arcuate cross section, and is formed into an L-shaped cross section by the bottom plate and side plates. A vegetation shelf for an earth retaining wall, characterized in that a shelf protruding from the front of the earth retaining block forms a soil groove.