JPS6047408B2 - wave-dissipating dyke - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ura wave dyke, and more particularly to a ura wave dyke that has a sufficient ura wave effect even when downward force from waves is applied.

Some conventional Urahami dykes include those in which the Urahami levee itself is given buoyancy to float near the water surface, an anchor is placed on the seabed, and the anchor is connected to the Urahami levee body using a wire.

However, since this Urahami levee connects the Urahami levee body and the anchor with wire, when the downward force of waves acts on the Urahami levee body, the Urahami levee body is flooded without resisting it, so the Urahami effect is good. There is no problem.

Furthermore, since the impact force of waves acts on the wire repeatedly, the durability of the wire cannot be expected.

On the other hand, since the main body of the Urahami levee is a buoyant body, a force acts on the anchor that prevents it from sliding in the direction of making it float, so in order to make the anchor resist sliding, the anchor itself must be made large. No.

Furthermore, since the Urahami levee body is a buoyant body, if the Urahami levee body is damaged by driftwood, etc., the Urahami levee body may tilt or sink, causing many problems such as worsening the Urahami effect. Ta.

Therefore, the present invention was made in order to solve the problems of the conventional ura wave dyke mentioned above. The purpose of the present invention is to provide a Urahami levee that can prevent tilting and sinking due to damage to the Urahami levee itself, and that can also provide a sufficient slip prevention effect even if the anchor is made smaller. do.

Next, embodiments of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, the Urahami levee main body 1 has a frame 2 formed of, for example, a steel pipe, and a large number of Urahami materials 3 within this frame 2.
Place the attached item at an appropriate angle to the water line. In addition, in order to enhance the Uranami effect, an auxiliary frame 4 is erected upward from the top end of the frame 2, and this auxiliary frame 4
It is preferable that the Uranami material 3 is also attached to the base. Below the Urahami levee main body 1 formed in this way, subsidence prevention plates 5 are installed at the corners of the frame 2 at locations adapted to the shape of the Urahami levee main body 1, for example, in three locations in this embodiment. arranged to correspond.

The subsidence prevention plate 5 has an area that will not subside into the ground even when the Urahami levee is installed on soft ground, and a projection 6 for preventing slipping that also serves as reinforcement of the subsidence prevention plate 5 is properly provided on the lower surface of the subsidence prevention plate 5. It is preferable to form several. On the other hand, the Urahami levee main body 1 and each subsidence prevention plate 5 are connected and fixed by connecting members 7 made of a rigid material, such as a steel vibrator.

Further, these connecting members 7 are each reinforced by struts 8 extending from the frame 2. Further, the intermediate portions of the connecting members 7 are connected by a universal joint 9, so that even if the subsidence prevention plate 5 is tilted, the breakwater main body 1 is not tilted and excessive force is not generated on itself. There is.
In other words, the breakwater can be installed in a stable state even if there are irregularities on the seabed. By the way, on the subsidence prevention plate 5,
An anchor 10 whose movement in the horizontal direction is restricted by a connecting member 7 is placed. This anchor 10 is used to prevent the wave-dissipating levee from floating up, and its size and weight can be determined as appropriate depending on the size and shape of the wave-dissipating levee and the sea conditions at the location where it is used. . Also, anchor 1
The anchor 10 may be inserted from above the connecting member 7 as in this embodiment, or the anchor 10 may be formed with a U-shaped groove and inserted into the connecting member 7 from the side. Furthermore, a plurality of anchors 10 may be used in a stacked manner. Now, even if the wave-breaking bank constructed as described above is installed and a downward force is applied to the wave-breaking bank main body 1 due to waves, the connecting member 7 is rigid, so the wave-breaking bank main body 1 will not sink. Therefore, the desired wave-dissipating effect can be achieved.

Moreover, since the wave-dissipating levee main body 1 is supported by the subsidence prevention plate 5 and the connecting member 7, there is no need to give it buoyancy so that it floats near the water surface as in the conventional case.

death. Therefore, since the anchor 10 does not have the buoyancy of the wave-dissipating bank body 1, the anchor 10 can be made smaller and lighter.
In other words, the small anchor 10 can resist the horizontal force applied to the wave breakwater main body 1. In this case, it is preferable to provide the protrusions 6 as in the embodiment on the lower surface of the subsidence prevention plate 5 because the anti-slip effect can be significantly improved.

Furthermore, since the wave-dissipating dam body 1 does not need to have buoyancy to float near the water surface as described above, the wave-dissipating dam body 1
Even if the wave-dissipating main body 1 is damaged due to collision with driftwood or the like, it will not tilt or sink, and the desired wave-dissipating effect can be obtained.

Furthermore, since the weight of the breakwater main body is supported by the subsidence prevention plate 5, by appropriately enlarging this area, it is effective on soft ground.

Furthermore, since the universal joint 9 is provided in the middle of the connecting member 7, even if the subsidence prevention plate 5 itself is tilted, the wave-breaking bank body 1 will not be tilted or excessively tilted.

In other words, it has many advantages, such as the ability to install wave-dissipating banks in a stable state even if there are irregularities in the ground, and its effects are great.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is an overall perspective view and FIG. 2 is a side view. 1... Breakwater main body, 5... Subsidence prevention plate, 7... Connecting member, 9... Universal joint, 10... Anchor.

Claims (1)

[Claims] 1. A wave-dissipating levee characterized by connecting a wave-dissipating levee main body and a subsidence prevention plate with an anchor disposed below it by a rigid connecting member, and providing a universal joint in the middle of this connecting member.