JPS63110314A - Wave-absorbing type breakwater block - Google Patents

Abstract

PURPOSE:To prevent the occurrence of waves flash as well as to permit water to flow sufficiently by a method in which the inserting port and receiving port of the adjacent blocks are coupled with each other to strongly connect body of the blocks, and waves are directed from the suction port of through holes to the small-diameter part and then to large-diameter part. CONSTITUTION:Through holes 4 directed from the outside A of harbor to the inside B are formed in columnar concrete blocks 2 sideways stacked up for, the outside A of harbor to the inside B, which is to be constructed into a dam. For each of the holes 4, a small-diameter part 7 on the outside of harbor, a small-diameter part 10 on the inside of the harbor, and a large diameter part 11 than the parts 7 and 10 between the parts 7 and 10 are provided. The part 11 is common to each through hole 4, whose tube axial direction is crossed through the tube axial direction of the hole 4 and both ends are opened on the block face, in which an insertion port 13 is provided for one open end and a receiving port 14 is provided for the other open end.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a wave absorbing wave dissipating block.

Conventional technology The conventional wave absorbing and dissipating block is Tetrabod (
Registration mark) is common. This is a concrete block formed into a star shape with four protrusions forming a 120 degree angle to each other, and the embankment body is constructed by stacking multiple blocks.

Problems to be Solved by the Invention However, in such conventional blocks, when waves collide with the block, energy is absorbed and waves are dissipated. The problem is that it reaches the land. Furthermore, the above-mentioned conventional blocks have the problem that the flow of water is inhibited, stagnation occurs, and organic matter is likely to rot.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a wave-absorbing and wave-dissipating block that can prevent wave splashes and allow water to flow sufficiently.

Means for Solving the Problems In order to solve the above problems, the wave absorbing and dissipating blocks of the present invention are arranged in a horizontal direction from the outside of the bay to the inside of the bay, and can be stacked in multiples to construct an embankment body. A plurality of through holes are formed inside the columnar concrete block from the outside of the bay to the inside of the bay. A large diameter part is provided in common to all the through holes between the inner small diameter parts and has a larger diameter than both the small diameter parts, and the large diameter part has a pipe axis direction that intersects with the pipe axis direction of the through hole. The device is characterized in that it consists of a tubular body which is arranged as a block and has both ends open to the block surface, an insertion port provided at one open end, and a socket provided at the other open end.

Effect: According to the above structure, when a plurality of Glocks are lifted up, down, left and right to form an embankment body, the sockets and sockets of adjacent blocks fit together and can be firmly connected. The waves propagating from the outside of the bay toward the inside of the bay are guided from the suction port of the through-hole to the small diameter part inside the bay, and then propagate to the large diameter part. At this time, the waves collide with the inner surface of the small diameter part and are guided to the large diameter part while receiving a wave-dissipating effect. The waves are absorbed and the waves are surely dissipated. Wave dissipation is also achieved by colliding with the inner surface of the large diameter portion. Furthermore, the pipe body forming the large diameter part connects the blocks that meet each other as a bank body in the direction intersecting the pipe axis direction of the through hole to form a diversion channel, so waves entering the large diameter part are At the same time as it collides with the inner surface, it propagates in the direction of the above-mentioned spillway, which also causes wave dissipation.

According to the above, the waves do not collide with the rigid body but are dissipated before passing through the through hole, so the generation of wave splash is effectively prevented. Further, as the waves pass through the through hole, a water flow is generated inside the through hole, so that stagnation can be prevented from occurring.

Embodiment An embodiment of the present invention will be described based on the drawings. FIG. 1 is a schematic cross-sectional view of a wave absorbing and dissipating block (hereinafter referred to as a wave dissipating block) (1) as an example of the present invention, and FIG. FIG. 3 is a partially cutaway end view.

In Figures 1 and 2, (2) is a block, which is made of concrete in the shape of a square prism. Inside the block (2), a total of 20 tube bodies (3) extending in the longitudinal direction of the block (2) are embedded in parallel.
Twenty through holes (4) are formed in each block. The number of tubes (3) to be embedded inside the block (2) is:
Any number of 2 or more can be selected.

In each through hole (4) formed by the tube body (3),
The bay side portions (4a) each have a mouth-shaped suction port (6) that opens at the bay side end face (5) of the block (2).
It has a Further, in a portion of the pipe body (3) on the inner side of the bay than the suction port (6), a small diameter portion (7) on the outside of the bay, which has a smaller diameter than the suction port (6), is formed over a certain length.

In addition, the bay inner part (4b) of each through hole (4) is also blocked (
A mouth-shaped discharge port (9) that opens at the end surface (8) inside the bay of 2) is formed, and a small diameter part Q0 inside the bay, which has a smaller diameter than the discharge port (9), is formed on the outside of the bay of this discharge port (9). It is formed.

And the bay outer part (4a) of this multiple through hole (4)
The small diameter part (7) on the outside of the bay and the small diameter part (αQ) inside the bay of the inside part (4b) are all communicated by a common large diameter part (6). That is, the inner side of the bay side small diameter part (7) and the side side of the bay side of the bay side small diameter part α0 all open into a common large diameter part αυ. This large diameter portion Q1) is arranged in a direction that intersects the tube axis direction of the tube body (3) forming the bay outer part (4a) and the bay inner part (4b) of the through hole (4). Both ends of this tube body (2) are opened on the side of the block (2), and an insertion port is provided at one open end, and an inlet is provided at the other opening. Socket α (
b) is provided. The socket C14) can be fitted between adjacent blocks when constructing a breakwater using a plurality of blocks (2).

To manufacture the above-mentioned wave-dissipating block (1), the pipe bodies (3) and @ formed in a predetermined shape are covered with a mold, and the pipe bodies (3) are
This is done by pouring concrete between the concrete and the formwork.

As shown in Figures 3 and 4, the above-mentioned wave-dissipating blocks (1) are stacked vertically and horizontally from outside the bay to the inside of the bay (8), as shown in Figures 3 and 4. Build a breakwater (not shown). When stacking the wave-dissipating blocks (1), the insertion ports and sockets α4 of the adjacent wave-dissipating blocks (1) can be fitted into each other in the left-right direction to firmly connect them as described above. The fitting parts may be in a state where they just fit together, but they may be padded or welded to prevent vibration, or the concrete surfaces may be bonded together. The opening of the large diameter portion αD of the wave-dissipating block (1) forming the side end face of the breakwater is closed as necessary. In addition, each wave-dissipating block (1) is stacked vertically.
It is preferable to form a convex portion Qf9 and a concave portion M on the upper and lower surfaces so that they fit together, thereby making the connection even stronger.

In a breakwater constructed from wave-dissipating blocks (1) K configured as shown in ε above, there are many through holes (4) extending from outside the bay to the inside of the bay (3). ), the large-diameter portion αυ is connected in a direction intersecting with the wave-absorbing block (a plurality of through holes (4) in the wave-absorbing block (ri) and a plurality of through-holes (4) in the adjacent wave-absorbing block (1) 4) is formed to communicate a large number of through holes (4).

When waves have been advancing outside the bay at such a breakwater, the waves are easily guided to the small diameter part (7) outside the bay by the action of the suction port (6), and the small diameter part outside the bay (7),
Pass through the large diameter part αD and the small diameter part QO inside the bay (B
The diversion channel α formed by the large diameter part αυ reaches
Propagates in the tube axis direction of the inner tube @.

At this time, there is a collision with the inner surface of the small diameter part (7) on the outside of the bay and the large diameter part αυ, a change in the passage cross-sectional area from the small diameter part (7) on the outside of the bay towards the large diameter part αυ, and the formation of the large diameter part αD. Energy is absorbed by propagation to the left and right in the 7f channel αη,
The wave is dissipated. Also, when propagating from the small diameter part αQ inside the bay to the inside of the bay (8), the passage cross-sectional area increases and wave dissipation is performed. In this way, the waves are dissipated while passing through the through hole (4), so it is possible to dissipate the waves while preventing the generation of wave splash. The small diameter part αO on the inside of the bay is connected to the small diameter part on the outside of the bay (
It works in the same way as 7). As the waves pass through the through hole (4), water always flows inside the through hole (4), thereby preventing stagnation from occurring.

In addition, in the above-mentioned example, the inside part (4b) of each through hole (4) was explained to have the same structure as the outside part (4a), but in the inside part (4b), The discharge port (9) of the end face (8) may not be opened with a larger diameter than the inner small diameter part Q□, but the pipe body (3) forming the inner small diameter part αQ may be opened as it is. Also, the bay outer part (4a) of the through hole (4) that communicates with the large diameter part αυ
The number of rods in the bay inner part (4b) does not necessarily have to be the same number.

In addition, the 7 bodies (3) have a suction port (6) and a discharge port (9).
It can be formed to be thicker in the radial and axial directions at the open end, and by doing so, it can have sufficient strength against collisions with ships and floating objects on the water surface.

Furthermore, since a tube body (3) made of gold is embedded in the block (2), the jib block (2) can be reinforced with this, but if necessary, the block (2) ) can also be embedded with reinforcing bars. Also, tube body (3) and @
The surface of the tR iron can be coated with anti-corrosion coating such as zinc spraying or coating to prevent algae from adhering.

Effects of the Invention As described above, in the wave absorbing wave dissipating block of the present invention, when a plurality of wave absorbing and wave dissipating blocks are scooped up, down, left and right to form an embankment body, adjacent sockets and sockets can fit together and be firmly connected. At the same time, it produces exceptional effects such as being able to perform very good wave dissipation without generating wave splash and while ensuring water flow.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing an embodiment of the wave absorbing and dissipating block according to the present invention, FIG. 2 is a partially cutaway end view taken in the direction of arrow 1-I in FIG. 1, and FIG. 3 is the same. FIG. 4 is a partially cutaway end view showing a state in which a plurality of wave absorbing and wave dissipating blocks are connected, and FIG. 4 is a schematic sectional view taken along line I-1 in FIG. 3. (2)...Block, (3)...Tube, (4)...
・Through hole, (6)... Suction port, (7)... Small diameter part on the outside of the bay, (9)... Discharge port, α(g)... Small diameter part on the inside of the bay,
αυ...Large diameter part, α3...-Socket, α→...Socket.

Claims (1)

[Claims] 1.Multiple through-holes from the outside of the bay to the inside of the bay are formed inside column-shaped concrete blocks that are arranged horizontally from the outside of the bay to the inside of the bay and can be stacked to form an embankment body. Each through hole is provided in common to all the through holes between the small diameter part on the outer side of the bay, the small diameter part on the inner side of the bay, and the small diameter part on the outer side of the bay and the small diameter part on the inner side of the bay, and has a larger diameter than both said small diameter parts. a large diameter portion, the large diameter portion is arranged such that its tube axis direction intersects the tube axis direction of the through hole, both ends are open to the block surface, and an insertion port is provided at one open end, A wave-absorbing wave-dissipating block comprising a tube having a socket at the other open end.