JPH0585688B2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention is applicable to the construction of wave dissipators for embankments and seawalls on coasts and rivers, breakwaters and moorings in ports, by arranging or stacking a large number of blocks. This is a wave-dissipating block featuring the following.

``Prior art'' This type of conventional technology includes, for example, quadrupeds, hexapods,
There are hollow triangular blocks and breakwaters with vertical walls.

``Problem to be solved by the inventor'' The above-mentioned four-legged, six-legged, hollow triangular blocks, etc. are used to form breakwaters by arranging them in parallel or stacking them up, but the width of the breakwater is large. As a result, the usable water area becomes narrower. In addition, a breakwater with an upright wall reflects wave energy well, so the inside of the breakwater can be maintained calmly and protect ships and bay facilities, but the outside reflects waves. , it never calms down at all, and the seawater in the bay tends to stagnate and become polluted.

"Means for Solving the Problems" Therefore, the present invention was proposed to solve the above-mentioned inconvenience, and its structure is such that a column is provided at the center of the lower surface of the plate and A plate-shaped part is provided toward the four corners at an interval of To construct the wave breakwater, as shown in Fig. 5, a large number of plates are placed in parallel or stacked in several stages with their side surfaces butted against each other at the desired location. By doing so, the waves first enter the interior from the front, and then split into left and right sides by the column inside, or pass through the front through hole or the horizontal hole of the plate, or the wave enters the interior from the front. Resistance from the rear to the rear horizontal hole of the block, to the rear block, to the rear through hole, to the horizontal hole of the plate-shaped part,
Collision with waves coming from adjacent blocks,
Due to frictional resistance with the inner wall of the block, etc.
By dissipating the energy of waves from the open sea, the uplift force on the block is reduced, improving stability, lowering the wave reflection rate of the breakwater, and making the inside of the breakwater calm and safe for ships and the bay. This is to preserve the facility.

Next, the configuration will be explained with reference to the drawings. 1 is a plate and has a constant thickness. 2 is a column 2 that is integrally provided at the center of the lower surface of the plate.
Reference numeral 3 denotes a plate-like portion that is integrally provided with the plate body 1 and facing toward the four corners at a constant interval from the column body 2. 4 is
These are through holes provided at the front and rear of the plate body 1. 5 is a horizontal hole provided in the plate-like portion 3. Reference numeral 6 indicates recesses provided on both sides of the plate body 1.

``Function'' Since the present invention has the above-described structure, in order to construct it, as shown in FIG. The construction is carried out by stacking the parts having the recesses 6 on the sides of the parts 1 in contact with each other.

``Effects of the Invention'' Since the present invention has the above-described configuration, the waves that come rushing in are directed toward the open plate-like portion 3 at the front of the block, as shown by the arrows in FIGS. 1 and 2. , 3, and is tapered in the depth direction, so it first collides with this and the energy is attenuated, then collides with the internal column 2, and then splits into the left and right parts and hits the rear plate upper part 3. , 3, passing through the horizontal hole 5, or passing through the horizontal hole 5.
The energy is reduced by colliding with the waves passing from above and below, and some of it is absorbed by the through holes 4 and recesses 6 of the plate 1.
The energy passes through the upper part, collides with the waves flowing down from the upper part, and becomes turbulent, reducing and completely erasing the energy, which keeps the interior of the harbor calm and safe for ships to navigate safely and for facilities in the bay. In addition, the through holes 4 provided in the plate body 1 reduce the uplift force of the block and prevent the block from sliding, thereby constructing a strong wave-breaking bank. However, the inside of the embankment, where the blocks are piled up, promotes the exchange of seawater between the inside and outside of the embankment and serves as a reef for fish and shellfish.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
The first figure is a perspective view of the present invention, the second figure is a plan view,
FIG. 3 is a bottom view, FIG. 4 is a sectional view taken along the line A--A in FIG. 2, and FIG. 5 is a perspective view of the construction state. 1... Plate body, 2... Column body, 3... Plate-like part, 4...
... through hole, 5 ... horizontal hole, 6 ... recess.

Claims (1)

[Claims] 1. A column is provided at the center of the lower surface of the plate, plate-like parts are provided at a certain distance from the plate towards the four corners, and through-holes communicating vertically are provided in the plate, and horizontal holes are provided in the plate-like part. A wave-dissipating block characterized by having recesses formed on both sides of the plate.