JPS61211409A - Float wave dissipating device - Google Patents

Abstract

PURPOSE:To reduce a manufacturing cost, by a method wherein plural float bodies are disposed to a cradle in a zigzag state at intervals of a proper distance in a way that a draft is located in the level of the middle part of the float body. CONSTITUTION:Cylindrical float bodies 1, each formed by filling a skin, made of synthetic resin or a metal, with roamed resin, e.g., polyurethane, are secured in a zigzag state at intervals of a proper distance to a cradle 3 to form a float wave dissipating device. The upper end of a mooring rope 12 is coupled to a mooring ring 5 of the float wave dissipating device, a 3-eye ring 13 is inserted in the middle of the mooring rope 12, and is coupled to an auxiliary sinking weight 15 sunk on a sea bottom through a shackle. This causes incoming waves to rapidly spread after passage of the waves through gaps between the float bodies 1 at a high speed, resulting in production of violent eddy currents to to subdued through consumption of energy.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a wave dissipating device using a floating body.

Conventional technology Conventional floating wave devices mainly suspend a wall that obstructs the direction of waves from the buoyant body, or moor a long floating body laterally with respect to the waves. It constituted a wave dissipating device.

(c) Problems to be solved by the invention However, all of these floating wave devices are subject to large waves, and in order to withstand this impact, it is necessary to use multi-point mooring using multiple strong mooring lines. However, there were other problems, such as the need for a heavy and large sinking weight, resulting in a large mooring device and high cost.

(b) Means for solving the problem In this invention, a plurality of floating bodies are arranged on a pedestal in a zigzag pattern at appropriate intervals so that the water is in the middle of the floating bodies, and the waves pass through the gaps between the floating bodies. The energy of the waves is consumed by the vortices that occur at the time, or the reflected waves that occur when they hit a floating body.
As the waves gradually consume energy as they pass through, excessive impact force is not applied to the floating wave device, so the mooring device can be relatively small-scale, and the structure is simple and economical. Regarding equipment. The details will be explained in detail below according to the drawings.

FIG. 1 is a perspective view of the floating wave device of the present invention, showing a case where a cylindrical floating body is used as the floating body. FIG. 2 is a plan view thereof.

In the figure, (1) is a cylindrical buoyant body made of a synthetic resin or metal outer shell filled with foamed resin such as polyurethane, and is fixed to the upper surface of the pedestal (6) with an appropriate gap (2 x 2'). The pedestal (3) is assembled with strips such as angles, the upper surface (4) is constructed in a planar rough lattice shape to secure the floating body (1), and the lower side with mooring rings (5) provided at both ends. As shown in the figure, it is assembled three-dimensionally using beam members (6) and diagonal members (7). Fenders such as tires (
9) is attached. (10) is a connecting ring provided on both end faces for connecting with the adjacent floating wave device (5).

Figure 3 shows several floating wave devices (3) connected to a cable (11).
This shows the state in which they are connected in a row to form a wave-dissipating bank and moored to the seabed. Fig. 4 is a front view of the dam in this state.

As shown in the figure, both ends of the wave-dissipating bank are connected by one mooring line (12), and the middle of the line is connected to the center of a mooring branch (12) that connects the mooring ring (5) of the adjacent wave-dissipating device (3). Three and four rings (
It is moored to an anchor or sinker (14) on the bottom of the water by a single mooring line (12) connected to 13). In addition, a three-four ring (16) is inserted in the middle of the mooring line (12) at a position corresponding to approximately the water depth, and is connected to the auxiliary sinker (15) on the bottom of the water via a shackle, so that the mooring line (12) is vertical. It reaches the auxiliary sinker (15) with almost no slack. The underwater weight of the auxiliary sinker (15) is smaller than the reserve buoyancy of the floating wave device.

(E) Effect The waves that rush in from the front of the device first pass through the narrow gap (2) in the floating body at high speed, and then suddenly spread out, creating a violent vortex. Similarly, when passing through the next gap (2'), a violent vortex is generated, and the upper layer of the wave rapidly consumes energy in stages and calms down.

Also, part of the wave energy hits a floating body and becomes a reflected wave, which collides with other floating bodies or interferes with incident waves, rapidly consuming the energy. Since the energy of waves is mainly located in the surface layer, waves for which the floating wave device has been optimized in this way rapidly reduce their wave height, becoming small waves and calming down. In addition, in this embodiment, the horizontal plate (8) is provided in the middle of the pedestal (3).
This suppresses the circular or circular motion of the wave molecules, rapidly consuming the wave energy in the middle layer and helping to calm it down.

In addition, an auxiliary sinker (
15), in the event of large waves, the sink 1 (15) will be lifted from the ground at the bottom of the water.
That much helps in wasting the energy of the waves.

(f) Embodiment FIG. 5 shows another embodiment of the present invention, in which a rectangular floating body is attached to a floating body. In this case as well, there are effects similar to those of the cylindrical floating body described above, but the wave-dissipating effect due to the generation of reflected waves is slightly increased compared to the previous example.

(G) Effects of the Invention As described above, this floating wave device has a simple structure and low manufacturing cost, and the resistance due to waves is much lower than that of other general floating wave breakers, making the mooring device economical. It is particularly effective as a wave-dissipating device installed in front of fish farming equipment, etc.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the device of the present invention, FIG. 2 is a plan view thereof,
Fig. 3 is a perspective view of this device arranged in a row to form a floating wave bank, and Fig. 4 is a side view illustrating the state of wave dissipation.
FIG. 5 shows another embodiment of the invention. (1)... Floating body, (2X2')... Gap between floating bodies, (5)... Frame, (5)...
...Mooring ring diagram Plane 4ψ pull completed Ci? ] Figure 3 (21% 4)

Claims (1)

[Claims] 1. A floating wave device characterized in that a plurality of floating bodies are arranged on a pedestal in a zigzag pattern at appropriate intervals so that the sputtering water is in the middle of the floating bodies, and the pedestal is moored to a sinker by a mooring cable.