JPS63110312A - Wave absorbing type breakwater block - Google Patents

Abstract

PURPOSE:To make the manufacture of a breakwater block easier as well as to prevent the occurrence of waves flash in such a way as to enable water to flow sufficiently by a method in which tidal waves are directed from the suction port on the end of blocks to the small-diameter part and then through the connected part into the tube. CONSTITUTION:Metal tubes 3 having through holes 4 directed from the outside 28 of harbor to the inside 29 are buried in columnar concrete blocks 2 sideways stacked up from the outside 28 of harbor to the inside 29, which is to be constructed into a dam 25. On the end on the outside of harbor of the tube 3, a suction port 9 opening on the end of the block 2, a smaller diameter part than the tube 3 in the inside from the suction port 9, and a connecting part 11 to connect the small-diameter part 10 with the inside of the tube 3 in far inside from the port 9 are formed of a hardening material to make up a breakwater block.

Description

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

2. Description of the Related Art Tetrabod (registered trademark) is commonly used as a conventional wave absorbing and dissipating block. This means that the four protrusions are 1
It consists of concrete blocks formed in a star shape at an angle of 20 degrees, 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. In addition, the above-mentioned conventional blocks have the problem that the flow of water is inhibited, stagnation occurs, and the waste materials are likely to rot.

The object of the present invention is to solve the above-mentioned problems and provide a wave absorbing wave-dissipating block that can prevent the generation of wave splash, can sufficiently flow water, and has good manufacturability. That is.

Means for Solving the Problems In order to solve the above problems, the wave absorbing and dissipating blocks of the present invention can be arranged horizontally from the outside of the bay to the inside of the bay, and can be stacked in multiples to form a bank body of 4112. A metal hole capable of forming a negative passage hole extending from the outside of the bay to the inside of the bay is buried inside a columnar concrete block, and at least the outside end of the tube is made of a hardening material. A suction port that opens at the end face of the block, a small diameter portion that is formed on the inner surface of the tube on the back side of the suction port and has a smaller diameter than the tube body, and a small diameter portion that is formed further back than the small diameter portion. A connecting portion for connecting the inner surface of the tube body is provided.

Effect: According to the above configuration, waves propagating from the outside of the bay toward the inside of the bay are guided from the suction port on the end face of the block to the small diameter section, and then pass through the tube M after passing through the connection section. At this time, the waves easily collide with the inner surface of the small diameter portion due to the action of the suction port, and are propagated into the interior of the tube body while receiving a wave-dissipating action. Inside the tube, the cross-sectional area of the passage is larger than in the small diameter portion, so that energy is absorbed and waves are dissipated reliably. Wave dissipation also occurs when waves collide with the inner surface of the tube.

According to the above, the waves do not collide with a rigid body, but are dissipated while passing through the tube, so the generation of wave splash is effectively prevented. Further, as the waves pass through the tube, a water flow is generated inside the tube, thereby preventing the occurrence of stagnation.

When manufacturing this wave-dissipating block, concrete is poured around the tube body made of Gold R, and at least the outer end of the tube is made of a hardening material such as concrete or resin mortar, and an opening is made at the end face of the block. What is necessary is to form a suction port with a diameter smaller than the inner diameter of the tube on the inner surface of the tube on the back side of the suction port, and a connection portion with the inner surface of the tube on the back side of the small diameter portion. A negative through hole whose cross-sectional shape changes along the can be easily formed. The inner end of the tube may have the same shape as the above-mentioned outer end, or the open end of the tube may be directly connected to the inner side of the bay.

Embodiment An embodiment of the present invention will be described based on the drawings. Figure 1 (a
), (b), and (C) show examples of ml of the wave absorbing and dissipating block 1 according to the present invention.

Here, 2 is a block, which is made of concrete in the shape of a square prism. Inside block 2, this block 2
A cast iron pipe body 3 extending in the length direction is embedded,
A through hole 4 is formed by this tubular body 3 . The pipe body 3 has a socket 5 at the outer end of the block 2, and
It is configured to have a socket 6 at the inner end of the bay, and a mortar lining layer 7 for corrosion prevention is formed on the inner surface thereof.

A bellmouth-shaped suction port 9 with a frontage of 1J is formed on the outside end of the pipe body 3 by a hardening material such as concrete or resin mortar at the outside end surface 8 of the block 2, and a pipe on the inside of the bay from the suction port 9. A small diameter portion 1 smaller in diameter than the tube body 3 is provided on the inner surface of the body 3.
0, and a connecting portion 11 that connects the small diameter portion 10 and the inner surface of the tube body 3 by smoothly expanding the diameter on the inner side of the bay than the small diameter portion 10.
is formed.

The inner end of the tube 3, that is, the socket 6, is formed in the same 411-shape as the outer end. That is, a bell-mouth-shaped discharge port 13 is made of a hardening material such as concrete or resin mortar and is opened at the end face 12 of the block 2 on the inner side of the bay, and a pipe body 3 is formed on the inner surface of the pipe body 3 on the outside of the bay side from the discharge port 13. A small-diameter portion 14 having a smaller diameter than that of the pipe body 3 and a connecting portion 15 that smoothly expands in diameter from the small-diameter portion 14 toward the inner surface of the tube body 3 are formed on the outer side of the bay than the small-diameter portion 14 .

Since the concrete block 2 is formed into a square prism shape, its outer surface has four sides 16.17°18, 1.
9 appears. Block 2 on one side 18
Convex portions 20 of a constant height are formed over a certain range at both ends in the length direction. This convex portion 20 is
8 is completely formed over the entire width. A concave portion 21 corresponding to the convex portion 20 is formed on the side surface 16 located on the opposite side to the side surface 18 on which the convex portion 20 is formed, so that when a plurality of blocks 2 are arranged side by side, the adjacent blocks 2 The convex portion 20 and the concave portion 21 are configured to fit into each other. Similarly, a pair of convex portions 20 are formed on the side surface 17 at the central portion in the length direction of the block 2, and a pair of concave portions 21 are formed on the side surface 19 at corresponding positions.

A pair of hanging anchors 22 are provided on the side surface 16 closer to the center than both the recesses 21.

When manufacturing the wave-dissipating block 1 shown in FIG. 1, the block 2 is formed by covering a tube 3 of a predetermined length with a formwork and pouring concrete between the tube 3 and the formwork. Next, insert the mold 23a having the shape shown by the imaginary line into the socket 5 and the socket 6 of the pipe body 3, fill it with a hardening material such as concrete or resin mortar, and open it at the outer end face 8 of the bay. A small diameter portion 10 and a connecting portion 11 on the inner side thereof, a discharge port 13 opening at the inner end face 12 of the bay, a small diameter portion 14 and a connecting portion 15 on the inner side thereof can be formed. At this time, the end of the block 2 is formed of a curable material extending from the end of the tube body 3, and anchor bolts 24 are inserted at the extended connection points for reinforcement. Also, the connection part 11.1
5, the material protrudes from the end of the mold part 23a, naturally forming a curved cross-sectional shape as shown in the figure. In addition, when covering the tube body 3 with a formwork and pouring concrete as described above, at the same time, the mold material 23a is inserted into the socket 5 and/or the socket 6 of the tube body 3, and the concrete is poured all at once. May be molded.

The n-iron surface of the tube body 3 can also be anticorrosion-protected by zinc spraying or the like. In addition, since a metal tube 3 is embedded in the block 2, the block 2 can be reinforced with this tube 3, but if necessary, reinforcing bars can be embedded in the block 2. You can also do that.

FIG. 4 is a cross-sectional view of a breakwater 25 as a breakwater body constructed by stacking a plurality of wave absorbing and dissipating blocks 1 vertically and horizontally. Here, reference numeral 26 denotes a foundation part provided on the seabed, and the upper surface 27 of this foundation part 26 is formed to form an upward slope from the outer side 28 of the bay to the inner side 29 of the bay. The wave absorbing wave dissipating block 1 is stacked on the upper surface 27 of the base portion 26 and is similarly arranged to be inclined. Furthermore, when stacking, the convex portions 20 and concave portions 21 of adjacent wave absorbing and wave dissipating blocks 1 are fitted into each other to firmly connect them. A mounting part 30 is arranged on top of the wave absorbing and dissipating block 1 at the top, and its upper surface 31 is formed horizontally so as to allow passage of people and the like. Convex portions 20 and concave portions 21 are also formed on the upper portion 30 and the base portion 26, and are configured to fit into the concave portions 21 and convex portions 20 of the wave absorbing and dissipating block 1.

FIG. 5 shows a breakwater 25 having a configuration similar to that shown in FIG.
FIG.

As shown in the figure, the wave absorbing and dissipating blocks 1 are arranged and stacked to form a diamond shape when viewed from the end. By adopting such a stacked structure, stress in the vertical direction can be dispersed laterally, so that a breakwater 25 with excellent strength can be obtained.

When waves advance toward the breakwater 25 shown in FIG. It passes through the small diameter section 14 and reaches the inner side 29 of the bay. At this time, collision with the small diameter part 10 and the inner surface of the tube body 3, and the small diameter part 10
Energy is absorbed and dissipated by the change in the cross-sectional area of the passage from the tube body 3 to the tube body 3. Also, when propagating from the small diameter part 14 on the inside of the bay to the inside of the bay 29, the passage cross-sectional area increases,
Wave dissipation takes place. In this way, the waves are dissipated while passing through the n-hole 4, so it is possible to dissipate the waves while preventing the generation of wave splash. The small diameter portion 14 on the inside of the bay acts on waves returning from the inside 29 of the bay to the outside 28 of the bay in the same manner as the small diameter portion 10 on the outside of the bay. As the waves pass through the n-through hole 4, water is constantly flowing inside the through-hole 4, thereby preventing stagnation from occurring.

Further, by tilting the wave absorbing and wave dissipating block 1 as illustrated in FIG. 4, a water flow can be generated based on this tilt.

Figure 2 (a), (b) and Figure 3 (a), (b)
1 shows second and third embodiments of the wave absorbing and dissipating block 1 according to the present invention. In the second embodiment shown in FIG. 2, the end surface 5a of the socket 5 of the tube 3 forms a part of the outer end surface 8 of the block 2, and hardened concrete or resin mortar is placed inside the tube 3. Depending on the material, socket 5
A hellmouth-shaped suction port 9 that opens at the opening, a small diameter part 10 smaller in diameter than the pipe body 3 on the inside of the bay from the suction port 9, and a small diameter part 10 and the inner surface of the pipe body 3 on the inside of the bay from the small diameter part 10. A connecting portion 11 is formed which smoothly expands in diameter and connects the two.

Further, a protrusion 3a that protrudes radially inward is formed in a portion of the tubular body 3 corresponding to the location where the small diameter portion 10 is formed by pressing or the like, and the tubular body 3 and the curable material are hung together. Therefore, these small diameter portions 1G are prevented from being pulled out in the axial direction. Furthermore, the inner end of the tube 3, that is, the socket 6, is formed in the same shape as the socket 5 at the outer end of the pipe. However, the portion of the tubular body 3 corresponding to the small diameter portion 14 is not provided with a protrusion like the one on the socket 5 side. The rest of the structure is exactly the same as that of the first embodiment as shown in FIG.

In the third embodiment shown in FIG. 3, the end of the socket 5 of the tube 3 is expanded in diameter at the outer end of the tube 3, and concrete, resin mortar, etc. are formed inside the tube 3. It constitutes a frontage end 9a of a bellmouth-shaped suction port 9 which is made of a curable material and opens at the outer end surface 8 of the block 2. It also includes the bay inner end of the tube body 3, that is, the part of the insertion port 6,
The rest of the structure is exactly the same as the second embodiment shown in FIG.

In the second and third embodiments described above, the end of the socket 5 of the pipe body 3 can be formed thickly. When configured, it can have sufficient strength against collisions with ships and floating objects on the water surface.

In addition, the wave absorbing wave dissipating block 1 of the second and third embodiments
When manufacturing the tube body 3 of a predetermined length as in the first embodiment,
is covered with a formwork, concrete is poured between the tube body 3 and the formwork to form the block 2, and then a tubular or round bar-shaped mold 231) as shown by the imaginary line in FIG. The curable material is inserted into the socket 5 and the insertion port 6 of the tube body 3, and the small diameter part 10, the connecting part 11, the discharge port 13, and the small diameter part 14 are filled with the curable material.
, the connecting portion 15 can be formed. At that time, the suction port 9
is shaped into a predetermined shape. Note that when the tubular mold 23b is used, it does not necessarily have to be removed.

In the first to third embodiments described above, the inner end of the tube 3, that is, the socket 6, has the outer end of the pipe, that is, the socket 5.
Although a configuration has been described in which a discharge port 13, a small diameter portion 14, and a connecting portion 15 are formed with almost the same structure as the side, a configuration in which the opening end of the insertion port 6 is simply opened to the bay side 29 may also be used. . Further, the small diameter portion 14 may be formed by forming an in-thick cylindrical body externally in advance, and after this cylindrical body is hardened, it is inserted into the inside of the insertion port 6 and fixed.

Effects of the Invention As described above, according to the present invention, it is possible not only to perform wave dissipation very well without generating wave splash and while ensuring water flow, but also to improve productivity. A good wave absorbing and wave dissipating block can be obtained.

[Brief explanation of the drawing]

FIG. 1 shows the first wave absorbing and dissipating block according to the present invention.
(a) is a plan view thereof, (b) is a sectional view as seen from the front, (C) is a left end view thereof, and FIG. 2 also shows a second embodiment, (a) is a cross-sectional view of the front view, (
b) is its left end view, FIG. 3 similarly shows the third embodiment, (a) is a sectional view as seen from the front, (b) is its /i: end view, and FIG. 4 is shown in m1 drawing. 4 with wave absorption and dissipation block
Fig. 5 is a cross-sectional view showing the breakwater constructed in Japan, and Figure 5 is a side view of the breakwater. 2...Block, 3...Pipe body, 4...Through hole, 9
... Suction port, 10... Small diameter part, 11... Connection part,
25... Breakwater (bank body), 28... Bay outside, 29.
... Inside the bay.

Claims (1)

[Claims] 1. A through-hole can be formed from the outside of the bay to the inside of the bay inside a columnar concrete block that is arranged horizontally from the outside of the bay to the inside of the bay and can be stacked in multiple blocks to construct an embankment body. A metal pipe body is embedded, and at least the outer end of the pipe body is made of a hardening material, and a suction port is formed on the inner surface of the pipe body on the inner side of the block. a small diameter part smaller than the pipe body;
A wave absorbing wave dissipating block characterized in that a connecting portion is formed further back than the small diameter portion and connects the small diameter portion and the inner surface of the tube body.