JP3099882U - Concrete block - Google Patents

Abstract

An object of the present invention is to make it possible to stack concrete blocks in the upper tier by changing the posture by 90 degrees with respect to those in the lower tier.
SOLUTION: On both upper and lower sides of a substrate 1a having a square planar shape, two ridges 4 and 4 parallel to one end face of the substrate are placed at the same distance L from the substrate center on both sides of the substrate center. At the same position as the distance L from the center of the substrate to the position of the ridge on both sides of the center of the substrate in a direction perpendicular to the longitudinal direction of the ridge, and a concave step larger than the base of the ridge. Section 5 was provided.
[Selection diagram] FIG.

Description

This device is used alone as a revetment for rivers and as a revetment / consolidation. It relates to concrete blocks.

As a conventional concrete block of this type, there is a concrete block having a substantially square planar shape and provided with two ridges spaced apart in a width direction on upper and lower surfaces (for example, see Patent Document 1). Further, two ridges are provided in a double-girder shape (see, for example, Patent Document 2). Further, two ridges spaced apart in the width direction are provided on upper and lower surfaces, and projections are formed on the surface of the ridge on the front surface side. In addition, a hole is provided on the surface of the lower ridge so that the protrusion fits therein, so that when the blocks are stacked, the protrusion and the hole are fitted (for example, see Patent Document 3).

Japanese Utility Model Publication No. 55-4233 JP-A-58-168726 Japanese Utility Model Publication No. 50-69030

Even in the above-mentioned conventional concrete blocks, they can be stacked, but each block has the same posture, that is, the ridges are butt up and down with the front-back (or left-right) posture being the same, Alternatively, the ridge and the groove between the ridges are fitted so as to be shifted in the left-right direction and stacked, and the upper block does not overlap with the lower block in a posture turned 90 degrees. Was. In this manner, when the upper block is stacked with the posture shifted by 90 degrees with respect to the lower block, the ridges of the upper block contact the top surfaces of the ridges of the lower block with each other. There is a problem in that the state is made to be extremely unstable.

The present invention has been made in view of the above, and has a configuration in which two ridges parallel to one end face of the substrate are provided on both upper and lower sides of the substrate having a square planar shape. The ridges are provided in parallel at the same interval from the center of the substrate, on both sides of the center of the substrate in a direction perpendicular to the longitudinal direction of the ridges, and at the same position as the distance from the center of the substrate to the position of the ridges. It has a configuration in which a concave step larger than the base is provided.

{Circle around (4)} At least the V-groove parallel to the longitudinal direction of the ridge and the V-groove perpendicular to this are provided on at least the top surface of the projection provided on the upper side of the substrate of the concrete block in this configuration.

The upper concrete block that is stacked above the lower concrete block row can be stacked either in a posture parallel to the lower concrete block or in a posture changed by 90 degrees, and the posture is changed by 90 degrees. When stacked, the ridges mesh with each other, so that the stacking can be made extremely firmly in the front-rear direction and the lateral direction.

In addition, since the ridges of the upper and lower concrete blocks are intricately present between the stacked concrete blocks, it is possible to secure a water permeation effect in this portion and also obtain an effect of weakening the flow rate of flowing water. Can be.

Furthermore, by providing two V-grooves perpendicular to the top surface of the ridge, the laying work can be performed while monitoring these V-grooves by remote control, and this operation can be performed unattended.

1 to 4 show the concrete block 1 according to the present invention, FIG. 1 is a plan view, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. 4 is a perspective view.

基板 The substrate 1a of the concrete block 1 has a predetermined thickness, and has a square planar shape. A concave portion 2 is provided at an intermediate portion of each of the four side surfaces, and a through hole 3 is provided at a central portion of the substrate 1a. On the upper and lower surfaces of the substrate 1a, ridges 4, 4 having a trapezoidal cross-sectional shape are provided at the same distance L from the center of the substrate to both sides thereof in parallel with one side of the substrate 1a. The distance L between the projections 4 and 4 from the center of the substrate is slightly larger than 1/4 of the width of the substrate 1a. The width of the groove-shaped space between the ridges 4 and 4 is large enough to accommodate one ridge 4 turned upside down with sufficient space.

Each of the ridges 4 is located at two positions in the longitudinal direction thereof, on both sides of the substrate center in a direction orthogonal to the longitudinal direction of the ridges, at the same distance L as the distance from the substrate center of the ridges 4. And trapezoidal concave steps 5 and 5 having a depth of 1/2 of the height H of the ridge 4 are provided. The width of the opening of the concave step 5 is wider than the width of the root of the ridge 4.

A V-groove 6 in the longitudinal direction is provided at an intermediate position in the width direction of the top surface of the ridges 4 and 4 provided on the upper surface side of the block 1 in parallel with the ridge 4. Further, a V-shaped groove 7 in the width direction orthogonal to the V-shaped groove 6 in the longitudinal direction is provided at the same position as the center of the block in the middle of the top surface in the longitudinal direction.

Next, an example of using the concrete block 1 having the above configuration will be described with reference to FIGS. 5 to 8 show examples in which the upper concrete block 1 is stacked on the lower concrete block 1 in the same posture, and FIGS. 9 to 12 show the upper concrete block 1 with respect to the lower concrete block 1. This is an example in which the concrete blocks 1 are stacked while changing the posture by 90 degrees.

In FIGS. 5 to 8, the lower concrete block 1 is, for example, a plurality of linearly juxtaposed in the horizontal direction such that the ridges 4 face in the front-rear direction. Then, the upper concrete block 1 is stacked with the ridges 4 and 4 of the upper concrete block 1 inserted between the ridges 4 and 4 of the lower concrete block 1. Thus, the upper concrete block 1 is stacked in the same posture as the lower concrete block 1.

9 to 12, in the same manner as in the case where the lower step and the upper step are in the same posture, the concrete block 1 in the lower step has a plurality of lateral Arrange in a straight line. Next, the upper concrete block 1 is placed on the lower concrete block 1 while changing its posture by 90 degrees with respect to the lower concrete block 1. At this time, the upper concrete block 1 straddles the adjacent concrete blocks 1 and 1 of the lower step, and engages the concave step portions 5 of the ridges 4 of the concrete blocks 1 to overlap. At this time, a slight gap is allowed between the lower blocks. The gap is set to be equal to or less than twice the difference between the dimension from the center of the substrate to the ridge 4 and the dimension from the ridge 4 to the edge of the substrate.

コ ン ク リ ー ト The concrete blocks 1 are stacked by a crane using a wire rope or a suspending device using the through-holes 3, but the crane can be operated remotely to perform the work. At this time, a sensor such as a camera for detecting the V-grooves 6 and 7 of the concrete block 1 is provided at the tip of the working machine, and the V-grooves 6 and 7 of the ridge 4 are monitored by this sensor to position the concrete block 1. Do.

In the above configuration, the concrete blocks 1 are laid one by one in a plurality of rows in the plane direction, thereby exhibiting the function of protecting the river and securing the roots. Also, as shown in FIG. 8 or FIG. 10, by stacking the concrete blocks 1 by empty stacking, it is possible to construct a river protection floor, a revetment wall or the like. In this case, since the ridges 4 of the upper and lower blocks mesh with each other at the opposing portions of the upper and lower concrete blocks 1, a high water permeability is secured by a gap formed at this portion.

When stacking the concrete blocks 1 by changing the posture of the concrete blocks 1 by 90 degrees between the lower step and the upper step, the upper and lower concrete blocks 1 5 engages in the front-rear direction and the lateral direction, thereby forming a very strong retaining wall in the front-rear direction and the lateral direction even by vertical stacking. Since each concrete block 1 has a square shape, the stacking width in the front-rear direction does not change as shown in FIG.

Further, in the above-described embodiment, the example in which the protrusions 4 and 4 provided on the upper and lower surfaces of the substrate 1a are directed to the same direction on both the upper and lower surfaces, but this is the same as the upper protrusion and the lower protrusion. May be shifted by 90 degrees. The V-grooves 6 and 7 for sensor detection may be provided on the top surfaces of the ridges 4 on the upper and lower sides of the substrate 1a. By providing this on both sides, it is possible to eliminate the upper and lower sides of the concrete block.

FIG. 2 is a plan view showing the concrete block according to the present invention. It is the front view. It is the side view. It is the perspective view. It is a top view of the example which piles up the concrete block of an upper stage, and the same attitude | position with the concrete block of a lower stage. It is the front view. It is the side view. It is the perspective view. It is a top view of the example which changes a 90-degree attitude | position with respect to a lower side concrete block, and piles up an upper stage concrete block. It is the front view. It is the side view. It is the perspective view.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 ... Concrete block 1a ... Substrate 2 ... Concave part 3 ... Through hole 4 ... Protrusion 5 ... Concave step part 6,7 ... V groove

Claims (2)

On each of the upper and lower sides of a substrate having a square planar shape, two ridges parallel to one end face of the substrate are provided on both sides of the center of the substrate in parallel at equal intervals from the center of the substrate. A concrete block characterized in that a concave step larger than the base of the ridge is provided on both sides of the center of the substrate in a direction perpendicular to the direction and at the same position as the distance from the center of the substrate to the position of the ridge. . The concrete block according to claim 1, wherein a V-groove parallel to the longitudinal direction of the ridge and a V-groove orthogonal to the V-groove are provided on at least a top surface of the protrusion provided on the upper side of the substrate.

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