JPH042182Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a wave-dissipating block.

Conventional technology Conventional wave-dissipating blocks that dissipate waves include:
Tetra Pot (registered trademark) is common. It consists of a star-shaped concrete block with four protrusions forming an angle of 120 degrees with each other, and the embankment body is constructed by stacking multiple blocks.

Problems that the invention aims to solve However, with 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 conventional blocks described above have the problem that the flow of water is inhibited, resulting in stagnation and the organic matter is likely to rot. In recent years, the waterfront idea, or the idea of seeking people's living spaces along the water, has been proposed, and as towns and resort areas are being constructed based on this idea, efforts have been made to solve the above problems and create a comfortable environment near the water. It is hoped that this will be realized.

This invention solves the above-mentioned problems by preventing the generation of wave splash and water stagnation, and also by creating a pleasant sound artificially by wave motion and wave force, creating a comfortable environment at the waterside. The purpose is to provide a wave-dissipating block that creates

Means for Solving the Problems In order to solve the above problems, the present invention has a columnar body with a through hole formed in the axial direction whose cross-sectional area of the flow path changes by narrowing and expanding. It is a wave-dissipating block that has one end opening facing the wave propagation direction and is stacked vertically and horizontally in multiple stages to form an embankment.One end communicates with the middle of the through hole, and the other end A ventilation hole opened to the outside is formed, and a sounding body is provided in the middle of the ventilation hole to generate sound by the flow of air.

Effect In the above configuration, waves are guided into the through hole from the opening on one end side. At this time, the cross-sectional area of the flow path of the through-hole changes by narrowing and expanding, so that waves undergo pressure loss and decrease in flow pressure when passing through the through-hole, and are attenuated and dissipated. Further, as the waves pass through the through hole, a water flow is generated within the through hole, thereby preventing the occurrence of stagnation. When the waves pass through the through-hole, the air inside the through-hole is affected by the motion of the waves, and an air current is generated in the ventilation hole that communicates with the through-hole, causing the sounding body provided in the ventilation hole to pronounce. Additionally, this sound resonates within the through hole and reverberates as a loud sound.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. In Figures 1 to 3, the wave-dissipating block 1
is in the form of a columnar body, and a through hole 2 is formed in the axial direction by a cast iron pipe 3. The cast iron pipe 3 includes narrow passage portions 5a and 5b whose cross-sectional area is narrower than that of the openings 4a and 4b, and the narrow passage portions 5a and 5b.
A water retarding portion 6 having a wider cross-sectional area of the flow passage is formed, and the cross-sectional area of the flow passage as a whole is formed in a shape that narrows and widens. And the ventilation holes 7a, 7
One end of the vent hole b is formed to communicate with the narrow passage portions 5a and 5b, respectively, and the other end side of the vent hole 7a and 7b branches into two parts and opens at the upper and lower surfaces of the wave dissipating block 1 to be open to the outside. has been done. A whistle 9, which is a sounding body that produces sound by the flow of air 8, is placed in the middle of the ventilation holes 7a, 7b. It is designed to generate sound even if it flows in the direction of .

This wave dissipating block 1 has one end opening 5a.
are oriented in the direction in which the waves 10 propagate, and are stacked vertically and horizontally to form a wave-dissipating wall 11 which is an embankment body. At this time, the wave-dissipating blocks 1 having whistles 9 are stacked only at positions corresponding to the waves 10, and the through-holes 2 of the vertically adjacent wave-dissipating blocks 1 are the ventilation holes 7a,
It communicates via 7b. Among the wave-dissipating blocks 1 having whistles 9, the openings on one side of the ventilation holes 7a and 7b of those located at the highest and lowest positions are made by the wave-dissipating blocks 12 in which the ventilation holes 7a and 7b are not formed. It is blocked.

The operation of the above configuration will be explained. First, the waves 10 propagating toward the wave-dissipating wall 11 are guided into the through hole 2 through the opening 5a at one end. While passing through the through hole 2, the wave 10 suffers a pressure loss in the narrow passages 5a and 5b, and is attenuated and dissipated by reducing the flow pressure in the retarding part 6. At this time, the through holes 2 of the wave dissipating blocks 1 adjacent to each other in the vertical direction are the ventilation holes 7a,
It communicates via 7b. For this purpose, wave 1
When the wave 10 passes through the narrow passages 5a and 5b, the pressure water head decreases based on Beinoulli's theorem, and air flows from the through hole 2 through which the waves 10 do not pass to the through hole 2 through which the waves 10 pass. 7a, 7b
Inflow through. Then, the flute 9 generates a sound due to the flow of air 8 generated within the ventilation holes 7a and 7b. This sound resonates within the through hole 2 and reverberates as a loud sound. Furthermore, the generation of this sound is intermittent depending on the period of the waves. By setting flutes 9 of several pitches to emit chords, and by setting each flute 9 to a different tone, it is possible to adjust the sound of the waves 10 according to changes in the water level due to ebb and flow or the height of the waves 10. Since the through holes 2 to be passed through are different, it is possible to generate chords by setting whistles 9 of several pitches, or by setting different tones of each whistle 9, the wave 10 can be created by sound. Not only can you know the condition, but you can also enjoy the changes in the sound. Therefore, according to the wave-dissipating block 1 of this embodiment, it conforms to the waterfront concept,
Wave-dissipating wall 11 that makes the waterside environment comfortable
can be constructed.

FIG. 4 shows another embodiment of the present invention, which is characterized in that a ventilation hole 21 communicating with the water retarding section 6 is provided, and a whistle 9 is provided in the middle of this ventilation hole 21. In this configuration, waves 10
When the water passes through the through hole 2, the air inside the water retarding section 6 is pushed out of the through hole 2 through the ventilation hole 21. That is, air is trapped in the retarding section 6 when the waves 10 fill both the narrow passage sections 5a and 5b. Then, as the water surface of the waves 10 further rises, air is pushed out through the ventilation hole 21 into the through hole 2 of the other wave dissipating block 1 through which the wave 10 does not pass. Then, the flute 9 generates a sound due to this pushed-out airflow. Conversely, when the sea level falls, air is sucked in through the ventilation hole 21, and the flute 9 makes a sound due to the flow of the sucked air.

Effects of the invention As described above, according to the invention, waves can be effectively dissipated without generating wave splash and while ensuring the flow of water. Moreover, the waves create an airflow inside the vent, and this airflow causes the sounding body to generate sound, which not only alerts you to the state of the waves.
Sound can provide peace of mind to people near the water.

[Brief explanation of drawings]

FIG. 1 is an overall sectional view showing an embodiment of the present invention;
Fig. 2 is a view taken along the line A-A in Fig. 1, Fig. 3 is a view showing the state in which the wave-dissipating blocks of the present invention are stacked, and Fig. 4 is a view taken along the arrow A-A in Fig. 1.
The figure is an overall sectional view showing another embodiment of the present invention. 1...Wave dissipating block, 2...Through hole, 5a, 5
b... Narrow path section, 6... Water retarding section, 7a, 7b, 21
...Vent, 8...Air, 9...Flute, 10...Wave, 11...Wave-dissipating wall.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A through-hole that forms a columnar body and whose cross-sectional area of the flow path changes by narrowing and expanding is formed in the axial direction, and one end of this through-hole is opened in the direction in which waves propagate. It is a wave-dissipating block that is stacked vertically and horizontally in multiple stages to form an embankment body, with one end communicating with the middle of the through hole, and the other end forming a ventilation hole open to the outside. A wave-dissipating block characterized in that a sounding body is provided in the middle of the ventilation hole to generate sound by the flow of air. 2. A claim for utility model registration characterized in that vent holes are formed so that vertically adjacent through holes communicate with each other when stacked, and one end of the vent hole communicates with a narrow portion of the through hole. The wave-dissipating block described in Range 1.