JPH11350505A - Stone retaining wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To combine weight of backing crushed store with that of the surface stone to eliminate backing or backing concrete. SOLUTION: First stage stone plates 10 are laid on a footing concrete 13. A joint metal fixture 15 is held between the stone plates adjacent to each other. The joint metal fixture 15 is made of a vertically long steel plate flat bar 15a with eye pieces 15b welded thereto, and the eye pieces 15b are projected to the rear sides of the stone plates 10. Both ends of a strap 16 bent in the shape of an arc are fixed to the eye pieces with bolts 17. At the same time, a wire net 19 is borne along the inside of the strap 16. By the constitution, a cage 20 is formed of the strap 16 and wire net 19. The cage 20 is filled with crushed stone. The outside of the cage is backfilled with soil. Second stage stone plates 1 are laid alternately with the first stage stone plates. A cage 20 formed of the strap and wire net is mounted also to each of the second stage stone plates. After soil is filled up to the lower surface level of the second stage cage, the second stage cage is filled with crushed stone 21. Thus, the third and fourth stage stone plates are orderly piled up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall for preventing collapse and runoff of earth and sand, which can be used as a retaining wall for building land on a slope, a retaining wall for a road, a revetment for a levee of a lake or a river, and the like. It is.

[0002]

2. Description of the Related Art Conventional retaining walls are mostly made of concrete, and concrete retaining walls have the drawback that it is difficult to maintain harmony with the surrounding scenery even though the strength is sufficient. Also,
Concrete embankments in lakes and rivers are now thought to disrupt ecosystems and cause environmental destruction.
Therefore, recently, natural stones have been desired so that they can be easily used in nature and blend with the surrounding scenery.

[0003] As a retaining wall made of natural stone, Mashiishi has been well known since ancient times. Machiishi is a truncated pyramid with a generally rectangular surface and a gradually decreasing depth, and is filled while filling concrete. In some cases, even backfill concrete is struck. The back side of the retaining wall is filled with crushed stone to improve drainage. in this way,
Conventional shiraishi masonry requires a masonry technique and a great deal of labor at a construction site, and furthermore, concrete construction is indispensable, and thus there is a problem that construction costs increase and the construction period becomes longer.

[0004]

In the case of the shiraishi masonry, earth pressure is supported by the total weight of the shiraishi and the stuffed concrete, and also the backfill concrete. The crushed stones packed behind the retaining wall are not integral with the retaining wall, so their weight does not directly support earth pressure. SUMMARY OF THE INVENTION It is an object of the present invention to obtain a retaining wall that does not require stuffing or backfill concrete by effectively utilizing the weight of backfill crushed stones integrated with a stone material.

[0005]

According to the present invention, a car is attached to the back of each of a plurality of planar stones forming the surface of a retaining wall, and a stone block (crushed stone) is packed in the basket. ).
By doing so, the stone blocks in the basket are integrated with the stone material forming the surface of the retaining wall, and it is possible to prevent the retaining wall from falling down due to the weight of the stone blocks. Therefore, backfilling or stuffing concrete for adding weight to the retaining wall is unnecessary, construction can be performed at low cost, and the construction period can be shortened. In addition, the stone blocks packed in the basket play a role in securing drainage behind the retaining wall.

[0006] The planar stone material can be simply constituted by a stone plate (claim 2). The slab may be made of natural stone or concrete. When a stone slab is used, a fitting can be sandwiched between the stone slabs, and a band can be passed between the fittings and the fittings apart from the back of the stone slab, and a cage can be formed along the wire mesh along the band. (Claim 3). This allows the car to be easily and reliably supported on the stone plate.

The planar stone material may be constituted by a fence formed by connecting a plurality of stone pillars (natural stone or concrete) with a horizontal bar. A spacer formed of an elastic material, for example, rubber is interposed between the stone pillars (claim 4). In this way, the bar can be bent so that the fence can be curved in accordance with the shape of the river. When the fence is curved, there is no elastic force applied to the stone due to the elastic spacers.

When a fence is used, connecting metal fittings are fixed on both sides of the fence with rods, and a band is passed between the connecting metal and separated from the back of the fence, and the metal mesh is supported by the band. A cage can be formed (claim 5). This allows the car to be easily and reliably supported by the fence.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an example of a retaining wall for building residential land will be described. In FIG. 1, reference numeral 10 denotes a stone plate obtained by cutting natural stone (granite), and the size is 500 mm long × 1000 mm wide × 100 mm thick.
mm. Grooves 11 are formed on both sides of the stone slab 10 from top to bottom. Holes 12 for positioning are formed on the upper and lower surfaces of the stone plate 10.

The first-stage stone slab 10 is stacked on the foundation concrete 13. As shown in FIG.
An anchor 22 is embedded in advance, and the tip of the anchor 22 is inserted into the hole 12 on the lower surface of the first-stage stone plate 10 for positioning.

The joint fitting 15 is sandwiched between adjacent stone plates. The joint fitting 15 is a flat bar 1 made of a long steel plate.
The eyepieces 15b (three in this case) are welded to the 5a at an interval. The flat bar 15a fits in the groove 11 of the two stone plates, and the eyepiece 15b is
Projecting from the back of

As shown in FIG. 2, both ends of a band 16 bent in an arc shape are fixed to the eyepiece with bolts 17. At the same time, the wire mesh 19 is supported along the inside of the band 16. The wire mesh has a mesh of about 40mm. Thus, the cage 20 is formed by the band 16 and the wire net 19. The basket has no bottom,
In this case, the foundation concrete 13 serves as a bottom. The crushed stone 21 is tightly packed in this basket. Fill the outside of the basket with soil.

The second slab 1 is stacked so as to be staggered with the first slab. The positioning piece 23 is bitten between the upper and lower stone plates so as to be inserted into the hole 12. Similarly, a basket 20 made of a band and a wire mesh is attached to each of the second slabs. Fill the soil to the lower level of the second basket, then 2
Pack the crushed stones 21 in the basket of the step. Thus, the third and fourth stages are stacked. In this example, a four-tiered, 4-m-high retaining wall is constructed (Fig. 3).

In the thus constructed retaining wall, the crushed stone 21 in the basket is integrated with the slab 10, and the total weight of the element is large. It can withstand the collapse of earth and sand. Underground water passes between the crushed stones 21 and is discharged from a drain hole (not shown) at the lower part of the retaining wall. The retaining wall may be slightly inclined, and the sectional structure in that case is shown in FIG.

Next, an example of a bank will be described. In FIG. 5, reference numeral 30 denotes a granite pillar, which is connected in parallel (five in this example) to form a fence 31. The width of the fence is 1m. In order to connect the stone pillars, as shown in FIG. 6, a steel rod 32 is passed through a hole formed horizontally in the stone pillar 30, and nuts 33 are screwed and tightened at both ends of the rod. Rod 3
2 is passed through three stages. Spacers 35 (thickness 25 m) made of an elastic material (for example, rubber) are placed between the pillars.
m). The connecting fittings 36 are attached to both sides of each of the fences 31 using the rods 32.

The fence body 31 formed in this way is erected along the river bank. In practice, the riverbed is dug down and the lower part of the fence is buried in soil. If the river is curved rather than straight, the bar 32 is bent so that the fences conform to the curve of the river (FIG. 8).

When the fence body 31 is erected, as shown in FIG.
The connection fittings of the adjacent fence are connected by bolts 37. At this time, both ends of the band 16 bent in an arc shape are bolted 37.
And the cage 20 is formed by supporting the wire mesh 19 along the inside of the band. The lower basket is provided with a bottom 40 by wire mesh. A suction prevention mat 39 (water permeable mat) is applied to the inside of the car and on the stone pillar side, and crushed stones 21 are packed in the car 20. Thus, the soil behind the fence 31 is backfilled (FIG. 7).

The embankment thus constructed also resists earth pressure, with the weight of the stone pillars and the crushed stones in the basket. In addition, scouring due to water pressure is prevented, and a natural-friendly and excellent seawall is obtained. The suction prevention mat 39 prevents the soil from being sucked into the river through the gap between the stone pillars.

[Brief description of the drawings]

FIG. 1 is a perspective view of a retaining wall as viewed from the rear side.

FIG. 2 is a horizontal sectional view of a main part of a retaining wall.

FIG. 3 is a vertical sectional view of a retaining wall.

FIG. 4 is a vertical sectional view of a lower part of the inclined retaining wall.

FIG. 5 is a perspective view of the fence-type retaining wall as viewed from the rear side.

FIG. 6 is a horizontal sectional view of a main part of the fence type retaining wall.

FIG. 7 is a vertical sectional view of a fence type retaining wall.

FIG. 8 is a plan view of a main part of the fence type retaining wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Stone board 15 Joint metal fittings 16 Belt 19 Wire net 20 Basket 21 Crushed stone (stone block) 30 Stone pillar 31 Fence 32 Bar 35 Spacer 36 Connection metal fitting

Claims (5)

[Claims] 1. A stone retaining wall in which a car is attached to the back of each of a plurality of planar stones forming the surface of the retaining wall, and a stone block is packed in the car. 2. The stone retaining wall according to claim 1, wherein said planar stone is a single stone plate. 3. A metal fitting is sandwiched between adjacent stone plates, a band is passed between the metal fittings and separated from the back surface of the stone plate, and a metal mesh is passed along the metal band along the cage. 3. The stone retaining wall according to claim 2, wherein: 4. The stone material retaining wall according to claim 1, wherein said planar stone material is constituted by a fence formed by inserting and connecting a plurality of stone pillars with a rod between spacers formed of an elastic material. 5. A connecting member is fixed on both sides of the fence by the rod, and a band is passed between the connecting members at a distance from the back of the fence, and a wire mesh is passed along the band. 5. The stone retaining wall of claim 4 wherein the cage is formed.