JPH10176320A - Wave dissipation block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve performance by providing a side body on an axial body projectively provided on a wall body, forming a water retarding part between the side body and the wall body and providing an inclined surface on a specified part. SOLUTION: A wave dissipation block 1 is constituted by recessively providing a side body 4 on a side surface of an axial body 3 projectively provided on a wall body 2, recessively providing a water retarding part 7 between the side body 4 and the wall body 2 and forming an inclined surface on a specified part. The block 1 is accumulated so that a front surface of the axial body 3 faces the forwarding direction of a wave. A rear part inclined surface 2a and a front part inclined surface 3a irregularly reflect a wave from the front and diminish wave motion energy, this wave is deformed as it pushes up inclined surfaces 4a, 4b, 4c and transformed to a mere flow, and the wave motion energy is further diminished by a slope effect. Consequently, it is possible to efficiently break water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave elimination block.

[0002]

2. Description of the Related Art Wave-breaking blocks used in conventional quays, seawalls, breakwaters, and the like have been invented in various shapes, but most of them have uneven surfaces or uneven portions. Waves are eliminated by frictional loss and wave breaking action in such as.

[0003]

However, in the conventional wave-eliminating blocks, the wave energy is reduced to some extent, but a sufficient wave-eliminating effect cannot be obtained because many reflected waves still remain. Was.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a wave-breaking block capable of enhancing a wave-breaking effect by wave deformation, friction loss, and wave breaking due to an inclined surface. It is.

[0005]

According to the present invention, there is provided a wave-eliminating block according to the present invention, wherein a side body is provided on a side surface of a center shaft protruding from a central portion of a wall body. A water repellent portion is formed between the wall and the wall, and an inclined surface is formed on the upper surface of the side body and is inclined upward toward the wall. It is characterized in that an inclined surface is formed.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a wave elimination block according to the present invention. FIG. 1 and FIG. 2 show a wave-elimination block, and FIG.
(5) is a plan view, side view, front view, bottom view, rear view, and FIG. 2 is a perspective view.

The wave-dissipating block 1 is made of concrete, and a central shaft 3 extending forward is integrally formed at the center of the wall 2.
Side bodies 4 are integrally formed on both side surfaces of the center shaft body 3.
This wave-dissipating block 1 is used for constructing a quay, a seawall, a breakwater, etc., and is stacked so that the front surface of the center shaft 3 faces the traveling direction of the wave.

The wall 2 is a flat mountain-shaped body, and a central shaft 3 is integrally formed at the center of the front surface with the center shaft 3 extending forward.
A fitting projection 5 for fixing another wave-eliminating block protrudes from the upper surface thereof, and a fitting groove 6 into which a fitting protrusion of the other wave-eliminating block is fitted on both side ends of the lower surface. It is recessed by half the length of the fitting projection. On the front surface of the wall 2, a rear inclined surface 2a is formed, which is inclined from the longitudinal center axis to both sides, so that waves from the front are irregularly reflected.

The center shaft 3 extends forward from the center of the wall 2 and has a fitting projection 5 on its upper surface for fixing another wave-eliminating block.
And a water repellent portion 7 is recessed between the side body 4 and the wall body 2 integrally formed on both side surfaces of the front portion.
The water repelling portion 7 is formed by a rear inclined surface 2a, an upper inclined surface 7a, and an internal inclined surface 7b.
The waves entering the water-reserving section 7 are irregularly reflected by a and 7b. Also, a front inclined surface 3a is formed on the front surface of the center shaft body 3 so as to be inclined from the center axis in the vertical direction to both sides, so that waves from the front are irregularly reflected, and the bottom inclined surface 3b is also provided on the bottom surface. Are formed.

The side body 4 is integrally formed on both side surfaces of the center shaft body 3, and a fitting concave groove 6 into which a fitting protrusion of another wave-eliminating block is fitted is formed on both side ends of the lower surface. And three inclined surfaces 4a, 4b, and 4c that are inclined upward toward the wall 2 are formed on the upper surface, respectively. These inclined surfaces 4a, 4b, 4c are respectively inclined upward toward the wall 2, but the second and third inclined surfaces 4b, 4c except the first inclined surface 4a are further inclined outward. Have been. On the front surface of the side body 4, a lower inclined surface 4d inclined downward and side inclined surfaces 4e on both sides of the lower inclined surface are formed.

Therefore, as shown in FIG. 2, the wave from the front is irregularly reflected by the front inclined surface 3a of the center shaft 3 and the inclined surfaces 4d and 4e of the side body 4, so that the wave energy is reduced and This wave has three inclined surfaces 4a, 4b,
The wave energy is further reduced by the slope effect that is deformed each time 4c is pushed up and is converted into a simple flow, and the wave energy moves from there to the water retardation part and is irregularly reflected.

As described above, the inclined surfaces 3a, 4a, 4b, 4c inclined in the respective directions on the respective portions of the wave-eliminating block 1.
Are formed to eliminate the plane perpendicular to the traveling direction of the wave, so that the wave is converted into irregular reflection and flow, and the wave energy is reduced.

FIG. 3 shows a mooring quay 10 constructed by stacking the above-described wave-breaking blocks 1 on a foundation 8 in three stages and placing cast-in-place concrete 9 thereon. This is shown in FIG.
As shown in the figure, the tip of the center shaft body 3 is piled up so as to face the traveling direction of the wave, that is, the first-stage wave-dissipating block 1
The central part 1 of the second-stage wave-dissipating block 1b
2 are positioned so as to be positioned, and each wave-eliminating block 1 is fixed by a fitting projection 5. At this time, since the fitting concave groove 6 is formed at half the length of the fitting projection and at both end portions, the center portion 12 of the wave-dissipating block 1b is inevitably joined to the joint portion of each wave-dissipating block 1a. It will be located at 11,
The positioning can be easily performed, and the movement in the left-right direction can be prevented.

Thus, the quay 10 in the wave traveling direction
On the front side are inclined surfaces 3a, 4 inclined in respective directions.
a, 4b, 4c,... are formed, and a water permeable hole 13 is formed at the left and right joints 11 of each wave-eliminating block 1.
Are formed. The water permeable hole 13 is provided between the center shaft 3 and the side
And three inclined surfaces 4a, 4b, 4 of the side body 4.
c, it becomes narrower toward the back.

Accordingly, when a wave rushing from the open sea collides with the front of the quay 10, the waves are generated by the front inclined surface 3a of the center shaft 3, the first inclined surface 4a of the side body, the lower inclined surface 4d, and the side inclined surface 4e. The wave energy is reduced by the irregular reflection. In addition, the waves entering from the water permeation holes 13 are deformed each time they rise on the inclined surfaces 4a, 4b, 4c of the side body 4, wave energy is reduced by a slope effect that is converted into a mere flow, and moves to the water chamber 14, Wave energy is further reduced by being irregularly reflected by the reflecting surfaces 2a, 3b, 7a, and 7b. The seawater whose wave energy has almost been reduced in this way raises the water level of the retarding chamber 14,
It flows out of the lower water-permeable hole 13 with a phase difference.

In this embodiment, the quay 10 is constructed by stacking the wave-breaking blocks 1 in three stages.
Not only the steps but also the layers can be stacked and constructed according to the conditions of the construction location.

FIG. 6 shows a breakwater 15 constructed by using the above-described wave-dissipating block 1. The breakwater 15 is constructed in the same manner as described above.
6 are installed. Wave elimination block 16 for this end
As shown in FIG. 7, one side of the wave-eliminating block 1 is formed vertically, and the side body 4 is formed only on the opposite side. (1) and (2) show right and left ends, and their width can be arbitrarily changed according to the installation location.

As shown in FIG. 8 (1), the breakwater 15 has a water passage hole 17 formed in the water chamber 14.
Numeral 7 denotes a notch 18 formed in the wall 2 of the wave-eliminating block 19.
Are formed together. Further, as shown in (1) and (3), the water passage holes 17 can be provided in the lowermost water-reducing chamber 14 and the upper water-retaining chamber 14.

[0019]

The irregular reflection of waves by the inclined surface provided on the front surface of the center shaft and the side body, and the inclined surface on the upper surface of the side body, which is inclined upward toward the wall, are deformed as the waves are pushed up. The wave energy can be effectively reduced by the slope effect that is converted into a simple flow.

The wave energy can be reduced twice by combining each of the inclined surfaces and the water retarding portion.

Since the fitting concave grooves formed at both ends are half the length of the fitting projections, when stacking the wave-eliminating blocks, the center of the wave-eliminating blocks is necessarily moved to each wave-eliminating block. Can be easily positioned, and can be prevented from moving in the left-right direction.

[Brief description of the drawings]

1 (1) is a plan view of a wave canceling block, (2) is a side view thereof, (3) is a front surface thereof, (4) is a bottom surface surface, and (5) is a rear surface surface thereof.

FIG. 2 is a perspective view of a wave canceling block.

FIG. 3 is a perspective view of a mooring quay using a wave breaking block.

FIG. 4 is a front view of a quay for mooring.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a perspective view of a breakwater using a wave breaking block.

FIGS. 7A and 7B are perspective views of a wave-eliminating block for a side wall.

8 (1) and (3) are perspective views of a quay for mooring,
(2) is a perspective view of the wave-dissipating block.

[Explanation of symbols]

 1, 16, 19 Wave-dissipating block 2 Wall 3 Center shaft 4 Side body 5 Fitting protrusion 6 Fitting groove 7 Water play part 8 Foundation 9 Cast-in-place concrete 10 Wharf

Claims (5)

[Claims] 1. A side body is provided on a side surface of a center shaft body protruding from a center portion of a wall body, and a water repelling portion is formed between the side body and the wall body. A wave-dissipating block, wherein an inclined surface inclined upward toward a wall is formed, and inclined surfaces inclined in respective directions are formed on a front surface of a center shaft body and a side body. 2. The wave-eliminating block according to claim 1, wherein the front surface of the wall is formed by an inclined surface inclined in each direction. 3. An upper surface is provided with a fitting protrusion for fixing another wave-eliminating block in the lateral direction, and a fitting groove having a half length of the fitting protrusion is provided on both sides of the lower surface. The wave-eliminating block according to claim 1 or 2, wherein: 4. A notch formed in a lower part of a side surface of the wall body to form a water passage hole.
Wave-dissipating block according to 2, 3. 5. The wave-eliminating block according to claim 1, wherein the side body is provided on at least one side surface of the center shaft body.