JP2001214461A - Retaining wall - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a retaining wall that can be easily constructed while effectively using excess ready-mixed concrete generated at a building site or the like. A horizontal portion (11) of a retaining wall (10) is formed by casting concrete on the ground, and a vertical portion (12).
Is constituted by arranging a plurality of divided bodies 16 made of concrete in parallel on a horizontal portion, and a plurality of width stop members 20 corresponding to each divided body are arranged along the front-rear direction near the upper surface of the horizontal portion. A projection 21b that is embedded and protrudes upward from the horizontal portion near the front end of each width stop member,
Lower fasteners 23 exposed on the upper surface side of the horizontal portion are respectively provided near the rear ends of the width stopper members, and upper fasteners 24 are embedded in the respective divided bodies so as to be exposed on the rear surface side. A retaining wall in which the front side is in contact with the projection 21b, the lower fastener is connected to one end of the connecting plate 13, and the upper fastener is connected to the other end of the connecting plate 13, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall provided for supporting earth pressure on a residential land or a side of a road having a height difference.

[0002]

2. Description of the Related Art Conventionally, when a retaining wall for retaining a wall is constructed on a residential land or a road side having a height difference, concrete L-shaped panels 1 as shown in FIG.
Pour concrete into L-shape on site using formwork,
Alternatively, as shown in FIG. 12, a method is known in which a concrete base 2 is cast on the ground, and a concrete block 4 is inserted into a reinforcing bar 3 projecting upward from the base 2 while being piled up. I have.

[0003]

However, the method shown in FIG. 11 has a problem that it takes time to transport the L-shaped panel 1 to the construction site, and the manufacturing cost of the L-shaped panel 1 is high. . In addition, the method of FIG. 12 has a problem that the work of stacking a large number of blocks 4 is troublesome. On the other hand, when there is a surplus of ready-mixed concrete at a building site of a house or the like, it has been difficult to effectively use this.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide a retaining wall which can be easily constructed while effectively using surplus fresh concrete generated at a construction site or the like. Therefore, the retaining wall according to claim 1 of the present invention is a concrete retaining wall having a vertical portion for supporting earth pressure and a horizontal portion buried in the ground below the vertical portion. Is formed by pouring and solidifying concrete on the ground so that the front and rear widths are larger than the vertical width, and the vertical portion is formed by dividing a plurality of divided bodies formed of concrete on the horizontal portion in the longitudinal direction. A plurality of width stop members corresponding to each divided body are embedded along the front-rear direction near the upper surface of the horizontal portion, and a horizontal portion is positioned near the front end of each width stop member. Lower fasteners are provided, each having a projection projecting upward from the rear end of each width stopper member and exposed on the upper surface side of the horizontal portion in the vicinity of the rear end, and each of the divided bodies is provided with an upper fastener so as to be exposed on the rear surface side. Embedded in the split body With the front side is brought into contact with the projections, one end of the lower fastener connecting plate, said upper fastener is characterized in that it is respectively connected to the other end of the connecting plate.

[0005] When the retaining wall is constructed, concrete is cast on the ground as described above to form a horizontal portion, and then a plurality of divided bodies made of concrete panels are juxtaposed on the horizontal portion. Then, each divided body and the horizontal portion may be connected by the connection plate. In this case, since the projection and the lower fastener are provided on the same width stop member, the distance between the projection and the lower fastener is kept substantially constant. In a state where the divided body and the horizontal part are in contact with each other, the distance between the upper fastener and the lower fastener is also substantially constant, so that the divided body and the horizontal part can be connected by the connecting plate while supporting the divided body in an appropriate posture. Become.

A retaining wall according to a second aspect of the present invention is the retaining wall according to the first aspect, wherein a connecting member for connecting adjacent divided bodies is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, when there is a height difference on a residential land, a side of a road, or the like, the concrete retaining wall 10 of the present embodiment is provided at a step portion. That is, the ground L1 on the rear side (the right side in the figure) of the retaining wall 10 (see the two-dot chain line) is the ground L2 on the front side (the left side in the figure) of the retaining wall 10.
It is higher, and at least one of the upper and lower tiers is residential land, and when one of the upper or lower tiers constitutes a road, etc. The retaining wall 10 can be used.

The retaining wall 10 comprises a horizontal portion 11 buried in the soil and a vertical portion 12 for supporting the earth pressure at the stepped portion. The horizontal portion 11 and a plurality of divided bodies forming the vertical portion 12 16 (concrete panels) are connected by a connection plate 13.

[0011] As will be described in detail below, as shown in FIGS. 2 and 3, the horizontal part 11 is formed by placing concrete on the ground 14 via crushed stones 15 so that the front-rear width is larger than the vertical width. As a result, it is provided continuously in the longitudinal direction of the retaining wall 10.

On the other hand, the vertical portion 12 has a plurality of substantially rectangular parallelepiped divided bodies 16 arranged side by side on the horizontal portion 11. In FIG. 1, reinforcing bars 17 and 18 are embedded in each of the divided bodies 16 of the horizontal portion 11 and the vertical portion 12. In addition, horizontal section 1
A plurality of width stoppers 20 (width stoppers) extending along the front-rear direction are embedded in the vicinity of the upper surface of 1 in correspondence with each divided body 16.

As shown in FIGS. 4 and 5, the width stopper 20 has an elongated metal body 21 and an L-shaped metal body 21 which is attached by welding to a lower surface of the metal body 21 in the vicinity of an intermediate portion in the longitudinal direction. It is composed of a pull-out preventing reinforcing bar 22 and an embedded bolt 23 (a lower fastener) which is inserted from below into a hole 21a provided near the rear end of the metal fitting body 21 and fixed to the metal fitting body 21 by welding or the like.

A front end of the metal fitting body 21 is provided with a bent portion 21b (projection) which is bent upward, and a rear end thereof is provided with a bent portion 21c which is bent downward. The bent portion 21 b and the embedded bolt 23 project upward from the upper surface of the horizontal portion 11 in a state where the width stopper 20 is embedded near the upper surface of the horizontal portion 11. Each divided body 16 has its front surface brought into contact with the bent portion 21b, whereby the position of the divided body 16 in the front-rear direction is regulated.
The forward fall of the divided body 16 in the state where the earth pressure is applied is prevented.

An embedded nut 24 is provided on the upper part of each divided body 16.
(Upper fastener) is embedded so as to be exposed on the rear side. A crossing angle 25 (crossing connecting member) having an L-shaped cross section is bridged between a plurality of adjacent divided bodies 16, via a horizontal elongated hole 25 b provided in a vertical portion 25 a of the crossing angle 25. By screwing the bolt 26 to the embedding nut 24 of each divided body 16, the adjacent divided bodies 16 are connected to each other with a slight gap G for draining.

As shown in FIGS. 6 and 7, the connecting plate 13 has a bent portion 1 in a horizontal direction at a lower end and an upper end, respectively.
3a and 13b are provided. And the above-mentioned embedded bolt 2
3 is fixed to the bent portion 13a by being inserted into the hole 13c of the bent portion 13a and screwing the nut 27, and the hole 13d of the bent portion 13b is connected to the hole of the horizontal portion 25c of the passing angle 25. 25d is connected with a bolt 28 and a nut 29.

In the above structure, the front surface of the lower end portion of each divided body 16 is bent at the bent portion 21b of the metal fitting body 21 of the width fitting 20.
Therefore, even if earth pressure acts from behind the divided body 16, the divided body 16 does not fall forward. Further, since the bent portion 21b and the embedding bolt 23 are provided on the same metal fitting body 21 and the front surface of the divided body 16 is in contact with the bent portion 21b, the embedding bolt 23 and the embedding bolt 23 are embedded. Nut 24
The spacing between the divided bolts 16 is substantially constant.
3 and the passing angle 25 can be satisfactorily connected by the connecting plate 13 without particularly requiring fine adjustment of the position. Furthermore, the connecting plate 13 can be manufactured at low cost by using metal or the like, and since earth pressure acts from both left and right sides in the back-filled state, the connecting plate 13 is unlikely to be deformed.

The width stopper 20 is embedded substantially over the entire area of the horizontal portion 11 in the front-rear direction, and the adhesion to the horizontal portion 11 is strengthened by the pull-out preventing reinforcing bar 22. Divided body 1 by using plate 13 together
6 can be stably supported.

Next, the procedure for constructing the retaining wall 10 will be described. As shown in FIG. 8, first, the ground 14 around which the retaining wall 10 is to be constructed is excavated to a level slightly lower than the ground L2 on the lower stage after the completion of the construction shown in FIG.
After laying the concrete, only the side portions are partitioned by the formwork 31 and the concrete is poured and solidified so that the front and rear widths are larger than the up and down widths. Form. At this time, the reinforcing bar 17 and the width stopper 20 are embedded in the horizontal portion 11.

On the other hand, the plurality of divided bodies 16 constituting the vertical part 12 are prepared before or after the horizontal part 11 is constructed or at the same time as the horizontal part 11 is constructed. That is, as shown in FIG. 9, for example, the nut 22 is mounted on the formwork 32 on which the two divided bodies 16 can be simultaneously formed on both sides of the partition plate 33 via the support metal fittings 34, and as shown in FIG. The reinforcing bars 18 (not shown) are incorporated in a mold 32, concrete is poured into the mold 32, and the mold 32 is removed after solidification, thereby producing a large number of divided bodies 16 as shown in FIG.

Although the divided body 16 shown in FIG. 10 and the like does not have a surface pattern, if desired, an irregular pattern may be formed on the inner surface of the mold frame 32 so that the divided body 16 has a desired surface. A pattern can be provided. 16a is a concave portion formed by the support fitting 34.

For example, in the case where a house is built on a residential land having a height difference, and when the ready concrete is left after construction of the foundation of the house, the divided body 16 is diverted from the excess ready-mixed concrete. If necessary, it can be created while adding a new concrete material. As a result, ready-mixed concrete that is difficult to store can be used without waste.

Even in the case where the number of the divided bodies 16 is made larger than that required for the construction of the retaining wall 10 at the site in relation to the amount of the remaining ready-mixed concrete, unlike the ready-mixed concrete, the surplus divided bodies 16 are formed for a predetermined period. It can be stored and used as needed at other construction sites.

Construction of the horizontal portion 11 and a plurality of divided bodies 16
Is completed, a predetermined number of divided bodies 16 are sequentially placed on the horizontal portion 11 with the water drain gap G therebetween, and the front surface of the lower end of each divided body 16 is placed on the bent portion 21b. Abut. Then, as shown in FIGS. 2 and 3, adjacent divided bodies 16 are connected to each other by passing angles 25, and the connecting angles 25 and the embedded bolts 23 protruding from the horizontal portion 11 are connected to each other. It connects using the board 13. After the construction of the retaining wall 10 is completed, as shown by the two-dot chain line hatching in FIG. 1, the rear side (upper side) of the retaining wall 10 has a height L1 and the front side (lower side) has a height. L2
The earth and sand 36 may be backfilled.

As described above, since the horizontal portion 11 is constructed by casting concrete on site, for example, a facility for manufacturing a concrete L-shaped panel or the like as in the prior art is provided or manufactured. There is no need to transport the L-shaped panel to the site.

In the present embodiment, the vertical portion 12
Was created on site at the site,
The divided body 16 may be prepared in advance in a factory or the like and transported to the site. When a block or the like is stacked on the vertical portion 12 for the purpose of increasing the height of the retaining wall 10, for example, a nut (not shown) is embedded so as to be exposed on the upper surface of each of the divided bodies 16. It is only necessary to stack blocks and the like by using.

[0025]

As described above, according to the first aspect of the present invention,
Is a concrete retaining wall having a vertical portion that supports earth pressure and a horizontal portion buried in the ground below the vertical portion, and the horizontal portion vertically moves concrete on the ground. The vertical portion is formed by casting and solidifying so that the front-rear width is larger than the width, and the vertical portion is formed by arranging a plurality of divided bodies formed of concrete along the longitudinal direction on the horizontal portion. A plurality of width stop members corresponding to each divided body are embedded in the vicinity of the upper surface of the horizontal portion along the front-rear direction, and the protrusion protrudes upward from the horizontal portion near the front end of each width stop member. However, lower fasteners exposed on the upper surface side of the horizontal portion are provided near the rear end of each width stop member, and upper fasteners are embedded in the respective divided bodies so as to be exposed on the rear surface side. The front side of the body The lower fastener is connected to one end of the connection plate, and the upper fastener is connected to the other end of the connection plate. The horizontal portion of the retaining wall can be constructed on site, so the vertical portion is It is sufficient to transport only the configured divided body from the factory or the like to the site as needed, and there is an advantage that the labor of transportation can be omitted.

Further, since the projection and the lower fastener are provided on the same width stopper, the distance between the projection and the lower fastener is kept substantially constant. In the state in which the projections are in contact with the projections, the interval between the upper fastener and the lower fastener is also substantially constant.
There is an advantage that the divided body and the horizontal part can be connected while the divided body is supported in an appropriate posture.

In the retaining wall according to the second aspect, since the connecting wall for connecting the adjacent divided bodies is provided in the retaining wall according to the first aspect, the joining strength between the divided bodies is increased, and the earth pressure is increased. Of the retaining wall can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a retaining wall according to a first embodiment of the present invention.

FIG. 2 is a schematic rear view showing the retaining wall.

FIG. 3 is a schematic plan view showing the retaining wall.

FIG. 4 is a schematic plan view showing a width stopper used for the retaining wall.

FIG. 5 is a schematic plan view showing the width stopper.

FIG. 6 is a schematic side view showing a connecting plate used for the retaining wall.

FIG. 7 is a schematic rear view showing the connection plate.

FIG. 8 is a schematic sectional view showing a procedure for constructing the retaining wall.

FIG. 9 is a schematic perspective view showing a form for manufacturing a divided body constituting a vertical portion of the retaining wall as viewed from above.

FIG. 10 is a schematic perspective view showing a divided body created using the mold.

FIG. 11 is a schematic perspective view showing a conventional retaining wall using an L-shaped panel.

FIG. 12 is a schematic perspective view showing a conventional retaining wall in which blocks are stacked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Retaining wall 11 Horizontal part 12 Vertical part 13 Connecting plate 16 Divided body 20 Width stop metal (width stop member) 23 Embedded bolt (lower fastener) 24 Embedded nut (upper fastener) 25 Angle for street (connection for street) Element)

Claims (2)

[Claims] 1. A concrete retaining wall having a vertical portion for supporting earth pressure and a horizontal portion buried in the ground below the vertical portion, wherein the horizontal portion vertically moves concrete on the ground. The vertical portion is formed by casting and solidifying so that the front-rear width is larger than the width, and the vertical portion is formed by arranging a plurality of divided bodies formed of concrete along the longitudinal direction on the horizontal portion. In the vicinity of the upper surface of the horizontal portion, a plurality of width stop members corresponding to each divided body are embedded along the front-rear direction, and the protrusion protrudes upward from the horizontal portion near the front end of each width stop member. However, a lower fastener exposed to the upper surface side of the horizontal portion is provided near the rear end of each width stop member, and an upper fastener is embedded in each of the divided bodies so as to be exposed to the rear surface side. The front side of the body is Together is brought into contact, at one end of the lower fastener connecting plate, said upper fastener is characterized in that it is respectively connected to the other end of the connecting plate retaining wall. 2. The retaining wall according to claim 1, wherein a connecting member for connecting adjacent divided bodies is provided.