JPH0411107A - Vertical floating wave-extinguishing bank - Google Patents

Abstract

PURPOSE:To damp an incident wave by forming a bank body having an inverted-T shaped cross section, and by providing a stepped wave-extinguishing member between a central vertical part and horizontal parts on both sides. CONSTITUTION:A wave extinguishing step 3 of descending steps from the center toward both ends, is formed on a horizontal part on both sides of a bank main body 2 having an inverted-T shaped cross section. Each step 4 of the wave extinguishing step 3 is formed out of a vertical plate 5 and of a horizontal plate 6. The wave surface of a lateral wave 07 generated following the vertical oscillation of the wave extinguishing bank body is perturbed by the wave extinguishing step 3, and the wave energy is consumed thereby. Wave- extinguishing effect can thus be improved by damping incident waves.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a vertical floating wave dyke.

[Conventional technology]

Conventionally, as a floating wave levee, for example, as shown in the plan view of FIG. 9 and the cross-sectional view of FIG. A structure in which they are arranged in parallel with an interval S is known. Here, 03 is a mooring cable that anchors the embankment body 02 to a sinker 04 at the bottom of the water.

In such a vertically installed floating wave levee, as shown in the side view of FIG. Transverse waves 07 (see FIG. 9) are induced, which collide with each other and cause an interference effect, thus consuming the energy of the incident wave 01.

However, such a structure has almost no wave-dissipating effect except in the wavelength range where the pitching 06 of the embankment body 02 is maximum, so although it has the advantage of not interfering with traffic in the wave-dissipating area, However, it has not been put into practical use.

[Problem to be solved by the invention]

The present invention was proposed in view of these circumstances, and
The purpose of the present invention is to provide a highly practical vertical floating wave bank that does not obstruct traffic in wave-dissipating water areas and has a wide wave-dissipating wavelength range.

[Means to solve the problem]

To this end, the present invention provides a vertically installed floating wave bank in which a plurality of bank bodies whose longitudinal directions coincide with the traveling direction of incident waves are arranged in parallel with appropriate intervals, and each of the bank bodies is arranged in an inverted T. The embankment body has a letter-shaped cross section, and between its central vertical part and horizontal parts on both sides, stepped wave-dissipating members descend toward both sides, or are arranged in parallel at appropriate intervals and the leading edge forms a step-like step. It is characterized by providing a plurality of horizontal or vertical parallel wave-absorbing plates.

[Effect]

According to such a configuration, the wave-dissipating staircase disturbs the wavefront of the transverse wave generated between each embankment body and consumes the energy of the wave, so that the incident wave is greatly attenuated. In addition, multiple longitudinal wall plates or longitudinal shelf plates essentially form wave-dissipating stairs, which disturbs the wave front of the transverse waves generated between each embankment body and consumes wave energy, thus attenuating the incident wave. becomes thicker.

〔Example〕

The embodiments of the present invention will be explained with reference to the drawings.
The cross-sectional view in the figure shows the first embodiment, in which wave-dissipating stairs 3 in the form of descending steps are provided on both horizontal parts of the embankment main body 2, which has an inverted T-shaped cross-sectional shape, from the center toward both sides. In the formed embankment body, each staircase 4 is formed by a vertical plate 5 and a horizontal plate 6.

In such a structure, the wave surface of the transverse wave 07 generated due to the pitching of the wave-dissipating levee body is disturbed by the wave-dissipating staircase 3 as shown in the cross-sectional view of FIG. 2, and the energy of the wave is wasted.

The cross-sectional view in FIG. 3 shows a modification of the first embodiment, in which a horizontal flange 8 is protruded from the upper end of a vertical plate 5 that projects from the embankment body 7.

Even in such a structure, the operation and effect are substantially the same as those of the structure shown in FIG. 1, and it also has the advantage of disturbing the wave front and promoting the energy consumption of the wave.

Next, a perspective view of FIG. 4, a cross-sectional view of FIG. 5, and a partially enlarged view of FIG. A plurality of Mi!s are erected on both horizontal parts of the main body 9 at appropriate intervals in the lateral direction, and the height decreases from the central part toward both sides, and furthermore, a horizontal flange 11 is provided protruding from the upper end. 13 and 14 are front end walls and rear end walls attached to the front and rear ends of each vertical wall board 12, respectively, and 15 is a water inlet opened at each corner.

In such a structure, a wave-dissipating staircase is substantially formed by the plurality of longitudinal wall plates 12, so the effect is the first.
In addition to being substantially the same as the structure shown in the figure, it also has the advantage of disturbing the wave front and accelerating wave energy consumption, as well as reducing weight and cost.

In addition, the partial cross-sectional view in FIG. 7 shows the third embodiment, in which 16 is horizontally extended from the vertical side of the embankment body 9 at appropriate intervals in the vertical direction, and the overhang width is downward from the water surface. The embankment body is large in size and has a plurality of longitudinal shelf boards 18 each having a downward flange 17 projecting from its tip.

In such a structure, the plurality of longitudinal shelves 18 substantially form a wave-dissipating staircase, so the effect is the first.
In addition to being substantially the same as the structure shown in the figure, it has the advantage of disturbing the wave front and accelerating wave energy consumption, as well as reducing weight and cost.

Here, the flange is as shown in the partial cross-sectional view of FIG.
An upward flange 2o may be provided protruding from the tip, and in such a structure, the effect is substantially the same as that of the structure shown in FIG. It has the feature of promoting

According to these structures, the following effects can be achieved.

(1) In the wave-dissipating staircase of the first embodiment, this disturbs the wave front of the transverse wave generated between each embankment body and consumes the energy of the wave, so the incident wave is attenuated and the wave-dissipating effect is improved. .

(2) With the plurality of longitudinal wall plates of the second embodiment or the plurality of vertical shelf plates of the third embodiment, they substantially form a wave-dissipating staircase, so that waves can be generated between each embankment body. Since the wave front of the transverse wave is disturbed and the energy of the wave is wasted, the incident wave is attenuated, thus improving the wave-damping effect and simplifying the structure, reducing weight and cost.

〔Effect of the invention〕

In short, according to the present invention, in a vertical floating wavebank in which a plurality of bank bodies whose longitudinal directions coincide with the traveling direction of incident waves are arranged in parallel with appropriate intervals, each of the bank bodies is inverted. The embankment body has a T-shaped cross section, and between the central vertical part and the horizontal parts on both sides, stepped wave-dissipating members descend toward both sides, or are arranged in parallel at appropriate intervals and the leading edge forms a step-like step. By installing multiple horizontal or vertical parallel wave-dissipating plates, it is possible to obtain a highly practical vertical floating wave levee that does not obstruct traffic in the wave-dissipating area and has a wide dissipating wavelength range. It is extremely useful.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing the first embodiment of the present invention, FIG. 2 is a cross-sectional view showing the wave-dissipating state of the embankment body in FIG. 1, and FIG. 3 is a modification of FIG. 1. Similarly, FIG. 4 is a cross-sectional view, FIG. 4 is a perspective view showing a second embodiment of the present invention, and FIG. 5 is a V-V in FIG.
Figure 6 is a partially enlarged view of Figure 5, Figure 7 is a cross-sectional view along
This figure is a partial cross-sectional view showing a third embodiment of the present invention, and FIG. 8 is a partial cross-sectional view showing a modification of FIG. 7. FIG. 9 is a plan view showing a known vertical floating wavebank, and FIGS. 10 and 11 are a cross-sectional view and a side view of FIG. 9, respectively. 1... Embankment body, 2... Embankment body body, 3... Wave-dissipating stairs,
4...Stairs, 5...Vertical board, 6...Horizontal board, 7.
...Embankment body, 8...Horizontal flange, 9...Embankment body,
10... Embankment body, 11... Horizontal flange, 12...
Gil! Wall plate, 13...front end wall, 14...rear end wall,
15... Water inlet, 16... Embankment body, 17... Downward flange, 18... Longitudinal shelf board, 19... Embankment body, 20
...Upward flange, 07...Transverse wave,

Claims (1)

[Claims] In a vertical floating wave bank in which a plurality of bank bodies whose longitudinal directions coincide with the traveling direction of incident waves are arranged in parallel with appropriate intervals, each of the bank bodies is a bank having an inverted T-shaped cross section. A step-like wave-dissipating member descending toward both sides between the center vertical part and horizontal parts on both sides, or a plurality of horizontal or vertical parallel members arranged in parallel at appropriate intervals and whose tip edges form a step-like step. A vertically installed floating wave bank characterized by the provision of wave-dissipating plates.