JP2000120089A - Earth-retaining concrete block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate installation and positional adjustment and improve the construction efficiency and the finishing accuracy when constructing a boundary wall or an earth-retaining wall by using earth-retaining concrete blocks in an earth-retaining work for a housing site construction work or the like. SOLUTION: An inclined bottom plate 2 is connected to a vertical wall plate 1 and a reinforcing rib 3 is provided to connect to both sides at the two sides of the bottom plate, in this earth-retaining concrete block. A projection 8 is formed at the one end side of the upper face part 7 in the vertical wall 1 and a recess 9 to which the projection 8 is fitted, is formed at the other end side of the upper face part 7. An inclined notch 10 is formed by obliquely cutting one end side of the foundation contact face 4 of the lower part, and a plurality of injection through holes 5 are formed on the plane of the inclined bottom plate 2 and connection holes 20 in which connection rod 21 is fitted are formed opposite to each other at a part of both side faces. The foundation contact face 4 is protruded lower than the lower face of the connection part 6 side of the inclined bottom plate 2 and the width of the inclined bottom plate 2 is made narrower than the width of the vertical wall plate 1, and further, both ends of the lower end of the vertical wall plate 1 are protruded lower than the side faces 16 of the inclined bottom plate 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention is intended to facilitate installation and position adjustment when constructing a boundary wall or retaining wall using a concrete block for retaining in a retaining work such as a residential land development. Improve construction efficiency and finish accuracy.

2. Description of the Related Art Conventionally, in the earth retaining work, an earth retaining concrete block comprising a vertical wall plate, an inclined bottom plate, and a reinforcing rib used for constructing a boundary wall or a retaining wall is sequentially connected. In order to determine the installation position based on the foundation surface, the dimensional accuracy of each concrete retaining block, especially the accuracy of the height dimension, and the horizontal flatness of the concrete foundation surface are important, and at the time of construction, In order to finish the upper surface of the vertical wall plate horizontally and flatly,
A skilled technique was required for adjusting the installation position in the up / down, front / rear, and left / right directions and correcting the run-out (tilt), and the inclined bottom plate could not be easily fixed at the installation position. Therefore, it has been difficult to improve the efficiency of the construction work in which the blocks are fixed at the fixed positions in a fixed position.

[Problems to be Solved by the Invention] Conventionally, concrete blocks for earth retaining are generally used.
The weight of the concrete block for retaining earth is 1 ton and the height is about 2m. The concrete block for retaining large-sized objects is basically adapted to the construction method that determines the installation position based on the lower part. It was not designed to make it easy to adjust, move up and down, back and forth, and left and right positions, and correct run-out (tilt). The efficiency was significantly reduced. Further, since the inclined bottom plates are successively and successively fixed firmly, it is difficult to inject concrete into the gap between the lower surface and the concrete foundation or the grindstone.

[Means for Solving the Problems]
It is a fundamental improvement of the conventional concrete block for retaining, so that the construction efficiency can be improved without requiring skilled skills. That is, in the concrete block for earth retaining, in which the inclined bottom plate is connected to the vertical wall plate, and the reinforcing ribs to which the two sides are connected to both are provided, the vertical wall portion includes
A convex portion is provided on one end side of the upper surface portion, a concave portion is provided on the other end side where the convex portion fits, and one end side of the lower base contact surface is obliquely cut off to constitute an inclined notched portion, and an inclined bottom plate A plurality of injection through-holes are provided in the plane portion, and connection holes for fitting connection rods are provided facing part of both side surfaces, and the base contact surface is added to the above configuration. And projecting from the lower surface of the connecting portion side of the inclined bottom plate, the width of the inclined bottom plate is configured to be narrower than the width of the base contact surface, and both ends of the lower end of the vertical wall portion project from the bottom plate side surface of the inclined bottom plate. It is characterized by the following.

[Action] The present invention is a concrete block for earth retaining which is suitable for construction based on the upper part. The operation will be described with reference to the accompanying drawings.
The convex portion 8 and the concave portion 9 provided at both ends of the vertical wall portion 1 determine the vertical position by being fitted, and roughly determine the front-back, left-right position, and the inclination provided on one end side of the base contact surface 4 under the vertical wall portion 1. The notch 10 is an inclined gap for pushing a wedge 19 or the like for fixing the installation position. A gap 15 formed on the lower surface of the inclined bottom plate 2 on the side of the connecting portion 6 is suitable for adjusting the position by inserting a crowbar or the like and moving it back and forth, left and right, and is formed in a flat portion of the inclined bottom plate 2. The plurality of injection through-holes 5 are holes for injecting concrete into the gap 15 below the inclined bottom plate 2 and the vertical wall plate 1 after installation, and the connection holes facing the bottom side surface 16 shown in FIG. Reference numeral 20 denotes a hole for fitting the connecting rod 21 as shown in FIG. 5, and connecting the connecting rod 21 to the adjacent existing concrete block for earth retaining while aligning the position.

At the time of construction, as shown in FIG. 7, it is lifted using the hanging holes 14, lowered to a predetermined position, and aligned with and connected to the existing concrete block for earth retaining previously fixed. I do. In this case, when the protrusion 8 is lowered from above and the protrusion 8 on one end side of the upper surface 7 is fitted into the recess 9 of the existing concrete retaining block upper surface 7, the protrusion 8 serves as a stopper, and the vertical position is reliably determined. At the same time, the front, rear, left and right positions are roughly determined. After that, as shown by the arrow, it is brought close to the existing concrete retaining block side, and the connection hole 2 in the bottom plate side surface 16 of the existing concrete retaining block is provided.
The other end of the connecting rod 21 having one end fitted into the fitting block 20 is fitted into the connecting hole 20 of the bottom plate side face 16 of the existing concrete block for connecting the retaining block, and the connecting groove 13 on the side face is connected to the existing concrete block for retaining the block. And the left and right positions can be almost determined.

[0007] The front and rear, left and right position and shake (tilt) after this
Correction and adjustment of the gap 15 below the connecting portion 6 of the inclined bottom 2
6 and 7 are moved from the front of the vertical wall plate 1 or the side of the wall plate 11 as illustrated in FIGS. 6 and 7.
The wedge 19 and the like are pushed into the inclined notch 10 at the lower end of the vertical wall plate 1 to be fixed at the installation position. After installation at the fixed position, concrete is poured from the surroundings and fixed, but it is difficult to inject the concrete into the lower part of the inclined bottom plate 2 on the connecting part 6 side, the gap 15 in the concrete foundation 17 part, and the grindstone 18 on the entire lower side. The gap has an injection through hole 5 as illustrated in FIG.
Concrete can be easily poured or flowed from the container.

[Embodiment] An embodiment shown in FIGS. 1 and 2 will be described. The inclined bottom plate 2 is connected to the vertical wall plate 1, reinforcing ribs 3 are provided on both sides of which the two side surfaces are connected, and connection protrusions 12 or connection grooves 13 are provided in the longitudinal direction on both sides of the vertical wall plate 1. Construct a retaining concrete block. The vertical wall portion 1 is provided with a convex portion 8 on one end side of the upper surface portion 7 and a concave portion 9 on the other end side where the convex portion 8 is fitted. The protrusions 8 and the recesses 9 are not limited to being formed to be approximately half the thickness of the upper surface portion 7 as shown in FIG. 1, and may be formed by removing the entire thickness as illustrated in FIG. 3. The base contact surface 4 at the lower part of the vertical wall portion 1 is provided with an inclined notch 10 for obliquely cutting one end side and pushing a wedge 19 or the like at the time of position adjustment at the time of installation. The pushing of the wedges 19 and the like is preferably performed from the direction of the wall plate side surface 11 as shown in FIG. 7 for the adjustment in the left-right direction, and is easily pushed from the front direction of the vertical wall plate 1 as shown in FIG.

The connecting rod 21 made of a reinforcing bar or a rebar-containing concrete is provided on a part of the both bottom plate side surfaces 16 of the inclined bottom plate 2 so as to be aligned with the existing concrete retaining block and firmly fixed thereto. And a plurality of injection through-holes 5 for injecting concrete into the lower gap 15 on the connection portion 6 side of the inclined bottom plate 2 and the lower gap on the entire surface of the inclined bottom plate 2. To be provided. The base contact surface 4 projects from the lower surface of the inclined bottom plate 2 on the connecting portion 6 side, and the width of the inclined bottom plate 2 is smaller than the width of the base contact surface 4. Both ends are made to project beyond the bottom plate side surface 16 of the inclined bottom plate 2. Therefore,
After the installation, the lower end portion of the vertical wall plate 1 and the inclined notch 10 can be seen from the rear side, and it becomes easy to insert a bur or the like or to push the wedge 19 or the like at the time of position adjustment or inclination correction.

[Effect of the Invention] The concrete block for retaining the soil according to the present invention can be installed on the basis of the upper part in the earth retaining work such as the development of the residential land and the construction of the retaining wall, so that the concrete block for the earth retaining can be installed in the vertical position. Is determined, the top surface is horizontal, and the connection is easy. The adjustment of the position before and after and after the installation, the correction of the inclination due to the shake, and the fixing are easy. Also, in addition to the fitting of the protrusions and recesses provided on the upper part of the vertical wall plate, the connection rods fitted in the connection holes provided on the side surfaces of the inclined bottom plate stabilize the existing adjacent concrete block for earth retaining. It is possible to improve the construction efficiency and construction accuracy because the pouring through hole facilitates the pouring of concrete into the gaps and gaps below the vertical wall plate and the inclined bottom plate. .

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a concrete block for earth retaining according to the present invention.

FIG. 2 is a rear view of the embodiment shown in FIG.

FIG. 3 is a partial view showing another embodiment of the protrusions and recesses provided on the upper surface of the vertical wall plate according to the present invention.

FIG. 4 is a cut end view of a connection hole portion of the inclined bottom plate.

FIG. 5 is a plan view showing a state in which a concrete block for retaining a soil according to the present invention is connected during construction.

FIG. 6 is an explanatory view of a case where wedges are pushed into the inclined cutout portion at the lower part of the vertical wall plate from the entire surface direction of the vertical wall plate during construction.

FIG. 7 is a construction explanatory diagram for constructing a boundary wall or a retaining wall using the concrete block for retaining the soil according to the present invention.

[Explanation of symbols]

 1. Vertical wall board 2. Inclined bottom plate 3. Reinforcement rib 4. Basic interface 5. Injection through hole 6. Connection part 7. Upper surface part 8. Protrusion 9. Recess 10. Slope lacking part 11. Wall plate side surface 12. Connecting ridge 13. Connection groove 14. Hanging holes 15. Void 16. Bottom plate side surface 17. Concrete foundation 18. Gressian stone 19. Wedge 20. Connection hole 21. Connecting rod

Claims (2)

[Claims] 1. An earth retaining concrete block in which an inclined bottom plate is connected to a vertical wall plate, and reinforcing ribs connected to both sides of the inclined bottom plate are provided, wherein the vertical wall portion has a convex portion on one end side of an upper surface portion. The other end side is provided with a concave portion in which the convex portion is fitted, and one end side of the lower base contact surface is obliquely cut off to constitute an inclined notched portion. A concrete block for earth retaining, wherein a through hole is provided, and a connecting hole for fitting a connecting rod to a part of both side surfaces is provided to face each other. 2. An earth retaining concrete block in which an inclined bottom plate is connected to a vertical wall plate and reinforcing ribs are connected to both sides of the inclined bottom plate, and the vertical wall portion has a convex portion on one end side of an upper surface portion. The other end side is provided with a concave portion in which the convex portion is fitted, and one end side of the lower base contact surface is obliquely cut off to constitute an inclined notched portion. A through hole is provided, and a connecting hole for fitting a connecting rod is provided to a part of both side surfaces so as to face each other, and the base contact surface is made to protrude from the lower surface of the connecting portion side of the inclined bottom plate, and the width of the inclined bottom plate A concrete block for earth retaining, characterized in that the width of the vertical wall plate is smaller than that of the vertical wall plate, and both ends of a lower end of the vertical wall plate protrude from side surfaces of the bottom plate of the inclined bottom plate.