JPH10152848A - Retaining wall block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a strong retaining wall by inserting a support hole provided in the thick part in the center of a retaining block to a steel pipe pile vertically raised on the ground to successively stack blocks, and placing a cement milk to the clearance between the support hole and the steel pipe pile. SOLUTION: A block 1 having a horizontally elliptic support hole 3 bored in a thick part 2 and semicircular connecting grooves 4 formed on both side end surfaces is formed of concrete, and has a reinforcement buried in the inner part. A steel pipe pile 6 is driven into a ground 5 with a space by the dimension of the central distance with the support hole 3 with the adjacent block 1. The support hole 3 is inserted to the steel pipe pile 6 to successively stack a plurality of blocks. Cement milk 8 is placed into a connecting pipe 7 of vinyl chloride inserted to the adjacent connecting grooves 4, 4. After all retaining wall blocks 1 are stacked, the cement milk 8 is placed in the clearance between the support hole 3 and the steel pipe pile 6, and banking 9 is provided on the reverse side of the retaining blocks 1. Thus, a firm retaining wall can be constructed regardless of the soil condition or a buried matter in the ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall block used for retaining a cut ground.

[0002]

2. Description of the Related Art As this type of retaining wall block, there is, for example, an inverted L-shaped (or L-shaped) retaining wall block a as shown in FIG.

[0003]

In the inverted L-shaped retaining wall block a as described above, if the ground (road or the like) b is soft, the supporting force is insufficient and the ground is inclined forward due to earth pressure. , The retaining wall may become unstable.

[0004] In addition, there is an inconvenience that the construction cannot be performed when there is a buried object such as a water pipe c in the ground b.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a retaining wall block capable of constructing a stable retaining wall irrespective of soil conditions and buried objects underground. It is intended to provide.

[0006]

In order to achieve the above object, a retaining wall block according to the present invention has a vertical panel shape with a required plate thickness, and a partly erected pile can be inserted into the ground. It has a support hole that faces in a vertical direction.

[0007] It is preferable that the above-mentioned support hole is formed in a part thereof with a part being thick.

It is preferable to form a plurality of the support holes.

Preferably, a gap is formed between a part of the inner surface of the support hole and the outer peripheral surface of the pile.

It is preferable to form semicircular connecting grooves on both end surfaces.

It is preferable that reinforcing pieces having a smooth end face are connected to both side end portions in a rearward right-angle shape.

Further, the retaining wall block of the present invention has a vertical panel shape having a required thickness, and has a U-shaped outward-facing support at both ends, which is vertically oriented and into which a pile standing on the ground can be inserted. It is provided with a groove.

It is preferable that the support groove is formed in a thick portion at both side ends.

According to the present invention, a strong retaining wall is constructed by inserting a supporting hole or a supporting groove into a pile driven into the ground and sequentially stacking the retaining wall blocks.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show a retaining wall block 1 according to a first embodiment of the present invention and an example of construction thereof.

The retaining wall block 1 of this embodiment is in the form of a horizontally-elongated rectangular vertical panel having a constant thickness and having a thick portion 2 in the center of the rear surface (the right surface in the figure).

In the thick portion 2, a horizontally long and oblong support hole 3 is formed vertically penetrating, and a semicircular connecting groove 4 is formed on both side end faces in a vertical direction.

The retaining wall block 1 is made of concrete, for example, 1,000 mm long, 1,500 mm wide,
It is formed to a thickness of 100 mm (excluding the thick part),
Reinforcing bars are buried inside.

When building using the retaining wall block 1, as shown in FIG. 2, first, a steel pipe pile 6 having a diameter slightly smaller than the support hole 3 is adjoined to the ground 5 and the supporting hole of the retaining wall block 1 is arranged. It is driven vertically apart from the center of the three pieces.

Next, the retaining wall block 1 is inserted into its support hole 3.
Are inserted into the steel pipe pile 6 and sequentially stacked on the ground 5 (for example, in two stages) (see FIG. 3).

At this time, the adjacent left and right retaining wall blocks 1
4 are inserted into a circular hole defined by both connecting grooves 4 and a connecting pipe 7 made of vinyl chloride or the like is inserted into the connecting pipe 7 as shown in FIG. To prevent displacement of both retaining wall blocks 1 in the plate thickness direction.

After all the retaining wall blocks 1 are stacked, a cement milk 8 is poured from above into a gap between the support hole 3 and the outer peripheral surface of the steel pipe pile 6, and the steel pipe pile 6 and each retaining wall The block 1 is integrally fixed.

Finally, when the embankment 9 is applied to the back side of the retaining wall block 1, a retaining wall firmly held by the steel pipe piles 6 is constructed.

FIGS. 5 and 6 show a second embodiment of the present invention and a working example thereof. Block 10 for retaining wall according to the second embodiment.
Is formed to be approximately twice as long as that of the first embodiment, and two thick portions 2 are symmetrically connected on the back surface thereof. Support holes 3 and connection grooves 4 similar to those described above are formed in each thick portion 2 and both end surfaces.

When a retaining wall is constructed using the retaining wall block 10, each supporting hole 3 is formed in the ground in the same manner as in the first embodiment.
It can be easily performed by driving the steel pipe pile 6 corresponding to the above and inserting the two support holes 3 into the pile. Note that the connecting pipes 7 can be inserted into the contact end faces of each other,
Casting the cement milk 8 between the steel pipe pile 6 and the steel pipe pile 6 is the same as described above.

Also in this embodiment, since two supporting holes 3 are provided for the longer size, a strong retaining wall is constructed as in the first embodiment.

FIGS. 7 and 8 show a third embodiment of the present invention and a working example thereof. In the retaining wall block 11 of this embodiment, the thick portions 2 are formed at both end portions, and an outward U-shaped support groove 12 is formed at each end surface. Connection grooves 4 similar to those described above are formed on both end surfaces.

When a retaining wall is constructed by using the retaining wall block 11, as shown in FIG. The retaining wall blocks 11 are sequentially stacked on the steel pipe piles 6, 6 such that the support grooves 12 at both ends are inserted from above. At this time, an oval support hole 13 is formed in the contact surface between the adjacent retaining wall blocks 11.

By pouring cement milk 8 into the gap between the support hole 13 and the steel pipe pile 6 as described above, the retaining wall block 11 and the steel pipe pile 6 are integrated, and A wall is built.

A connection pipe 7 similar to that described above is inserted into a circular hole formed by both connection grooves 4 formed on the contact surface.

FIG. 9 shows a fourth embodiment of the present invention. The retaining wall block 14 of this embodiment is a modification of the first embodiment shown in FIG. 1, in which reinforcing pieces 15 having smooth side end surfaces are continuously provided on the back surfaces of both ends in a rearward right angle. .

When such a reinforcing piece 15 is provided, FIG.
As shown in the figure, the retaining wall block 1 is constructed after the construction of the retaining wall.
4, even if a large earth pressure or the like acts in the direction of the arrow on the rear surface, the contact area between the adjacent reinforcing pieces 15 is large and the load is dispersed, so that the contact portion is broken or pushed forward. Is prevented.

As described above, each of the retaining wall blocks in each of the embodiments has the support hole 3 (the support groove 1 in the third embodiment).
Steel pipe pile 6 formed into a panel with 2) and driven into the ground
Therefore, a stable retaining wall can be constructed irrespective of soil conditions and buried underground like a conventional inverted L-shaped (or L-shaped) retaining wall block.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

[0036]

According to the present invention, the following effects can be obtained.

(A) A solid retaining wall can be constructed irrespective of the soil condition or the buried object under the ground only by inserting the support holes into the piles driven into the ground and sequentially stacking them.

(B) According to the second aspect, the support hole can be enlarged and supported by a large pile, and a stronger retaining wall can be constructed.

(C) According to the third aspect, since it is supported by a plurality of piles, a stronger retaining wall is provided.

(D) According to the fourth aspect, cement milk or the like can be poured between the support hole and the pile to fix the retaining wall block and the pile.

(E) According to the fifth aspect, by inserting a pipe or the like into the connecting groove between the adjacent retaining wall blocks, the retaining wall blocks are prevented from being displaced in the thickness direction.

(F) According to the sixth aspect, a large strength is obtained against earth pressure acting on the rear surface of the retaining wall.

(G) According to the seventh aspect of the present invention, by inserting the piles into the support grooves between the adjacent retaining wall blocks, the supporting strength of the contacting ends of each other is greatly increased, and The displacement of the block in the plate pressure direction is completely prevented.

(H) According to the eighth aspect, as in the above item (b), a stronger retaining wall is obtained.

[0045]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a construction example of a retaining wall.

FIG. 3 is an enlarged vertical sectional side view taken along line III-III of FIG. 2;

FIG. 4 is an enlarged cross-sectional plan view along the line IV-IV.

FIG. 5 is a perspective view showing a second embodiment of the present invention.

FIG. 6 is a perspective view showing a construction example of the retaining wall.

FIG. 7 is a perspective view showing a third embodiment of the present invention.

FIG. 8 is a perspective view showing a construction example of the retaining wall.

FIG. 9 is a perspective view showing a fourth embodiment of the present invention.

FIG. 10 is a plan view of a main part of the same retaining wall after construction.

FIG. 11 is a side view showing a conventional retaining wall block and an example of the construction of the retaining wall using the block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Retaining wall block 2 Thick part 3 Support hole 4 Connection groove 5 Ground 6 Steel pipe pile 7 Connection pipe 8 Cement milk 9 Embankment 10, 11 Retaining wall block 12 Support groove 13 Support hole 14 Retaining wall block 15 Reinforcement piece

Claims (8)

[Claims] 1. A retaining wall block which has a vertical panel shape with a required thickness and partially has a vertical support hole into which a pile standing on the ground can be inserted. 2. The retaining wall block according to claim 1, wherein the support hole is formed in a part of the support hole to be thick. 3. The method according to claim 1, wherein a plurality of support holes are formed.
The retaining wall block according to 1. 4. The retaining wall block according to claim 1, wherein a gap is formed between a part of the inner surface of the support hole and the outer peripheral surface of the pile. 5. The retaining wall block according to claim 1, wherein semicircular connecting grooves are formed on both side end surfaces. 6. The retaining wall block according to claim 1, wherein reinforcing pieces having a smooth end face are continuously provided at both side end portions in a rearward right-angle shape. 7. A retaining wall block having a vertical panel shape with a required thickness and having, at both ends, an outwardly-facing U-shaped support groove into which a pile standing on the ground can be inserted. . 8. The retaining wall block according to claim 7, wherein the support grooves are formed at both ends thereof with thick wall portions.