KR20150141224A - Seawater exchanging caisson for breakwater - Google Patents

Abstract

The present invention relates to a caisson used for breakwater construction. A water flow hole (20) is formed as a waterway penetrating the caisson. A downwardly inclined wall (31) inclined from a harbor-side top to a seawater-side bottom of the water flow hole (20) and an upwardly inclined wall (32) inclined from a harbor-side bottom to a seawater-side top of the water flow hole (20) are installed inside the water flow hole (20) and the downwardly inclined wall (31) and the upwardly inclined wall (32) cross each other on side surfaces to prevent wave propagation, but to enable the flow of seawater. The present invention enhances the water and ecological environments of a harbor without a decrease in the static temperature of the harbor and reduces construction periods and costs as the production periods and costs of the seawater-exchangeable caisson are similar to the same of a common caisson.

Description

{SEAWATER EXCHANGING CAISSON FOR BREAKWATER}

The present invention relates to a caisson for use in the construction of a breakwater and comprises a water passage port 20 which is a water channel passing through the inside of the caisson and is formed inside the water port 20 at the upper end side of the water port 20 A downward sloping wall 31 extending downward from the outer sea side and an upward sloping wall 32 extending from the lower end of the piercing mouth 20 to the outer sea upper side are provided, 32) are crossed with each other so that the wave propagation is suppressed, but the flow of the sea water inside and outside the vessel is made possible.

A caisson used for port construction such as a breakwater is usually a large enclosure with an open top and a closed bottom. It is usually made of precast concrete onshore, and after it is launched and towed, it is filled with sandstone or soil, And is installed in such a manner as to be settled.

The breakwater constructed with caissons is a structure in which a plurality of caissons are arranged in a side-by-side contact state, and has a structure in which seawater circulation through breakwaters is completely shut off.

Accordingly, a caisson for constructing a breakwater capable of exchanging seawater between the inside and outside of the sea and moving marine life by forming a water passage crossing the caisson has been developed, and related patent publication No. 2011-26042 can be cited.

The conventional seawater exchange type caisson including the open No. 2011-26042 is a type in which a water passage passing through a caisson is formed, a type in which a caisson is partially incised and a complex zigzag structure interference or blocking wall is installed in the incision portion , And a type in which a wall of the outer side of the caisson and a wall of the side of the quay side are formed as a porous body and a ceiling particle for the ceiling is filled in the caisson.

The conventional seawater exchange type caissons, which can be classified into the water passage type, the blocking wall type, and the sofa type, have the following problems by type.

First, in the case of the water line type, a water channel passing through the caisson is formed, which may deteriorate the structural stability of the caisson and increase the manufacturing cost of the caisson due to the complexity of the internal structure.

Particularly, in order to suppress wave propagation through the water channel, it is necessary to form the inlet and the outlet elevation of the water channel differently, so that it is basically impossible to freely flow seawater between the inside and outside of the sea, , A serious problem may arise where seawater can flow only in a certain time zone in a tidal zone.

Accordingly, it is possible to consider providing a plurality of water passages passing through the caissons and forming the respective inlets and outlets at various positions, but this seriously weakens the structure of the caissons and can cause an increase in the construction cost .

In addition, if the headway difference between the entrance and the exit is not formed depending on the structure of the waterway, there may be a serious problem that the operation itself is impossible.

The barrier wall-type caisson is alternately provided in a standing portion in an incision portion penetrating the caisson, which is advantageous in terms of structural stability of the caisson itself as compared with the above-mentioned waterway type structure. However, excessive construction cost and construction The time span problem is the same.

Particularly, the barrier wall in a standing state, which is installed in many in the incision portion, has a cross section orthogonal to the propagation direction of the wave on the side as well as the plane, and the wave energy has a structure directly affecting the blocking wall without any reduction action , There is a serious problem that the blocking wall is broken due to the repeated wave impact and the break-out function is lost thereby.

In this case, a method of cutting a part of the blocking wall, constructing the blocking wall in a stepwise manner, or forming a through-hole in the blocking wall has been applied. However, both of them cause a part of the blocking wall in the standing state to be removed, deck and the like, as well as the problem of increasing the construction cost due to the above-mentioned structure complexity.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a seawater free passage through a caisson while minimizing the structural stability deterioration of the caisson itself, To minimize the impact of the caisson structure, and to maximize the bearing capacity of the caisson upper structure.

That is, in order to achieve the above-described object, the present invention provides a waterproofing structure for a water tank, comprising: a front wall 11 on the outer sea side; a ship wall 12 on the dock side; and side walls 13 on both sides connecting the front wall 11 and the ship wall 12 And a plurality of compartments 15 are formed in the front wall 11, the back wall 12 and both the side walls 13. A plurality of compartments 15 are filled in the compartments 15, The front wall 11 and the back wall 12 are cut along the upper and lower portions of the caisson and the inner wall 21 connecting both side ends of the incision part and both side ends of the incision part of the front wall 11 And a downward inclined wall 31 extending from the upper side of the water inlet 20 to the lower side of the water outlet 20 is formed in the inner wall 21 on one side of the water inlet 20, And an upward inclined wall 32 extending from the lower end of the piercing mouth 20 to the upper side of the water hole 20 is provided in the other side inner wall 21 of the water supply port 20, Characterized in that the slope wall (31) and the upward inclined wall (32) intersect sideways and the end faces of the downward inclined wall (31) and the upward inclined wall (32) It is a breakwater caisson.

By constructing a crossing slope wall having a relatively simple structure in the water passage 20 crossing the caisson, the wave propagation can be effectively suppressed while ensuring free flow of seawater over the entire operation water level of the caisson.

Particularly, even when there is no water head difference between the front surface and the back surface of the caisson, not only smooth seawater flow but also free movement of marine life is possible, and the water inlet 20 is formed on the front surface and the back surface of the caisson, Since it has a completely closed structure, wave propagation through the caisson can be effectively blocked.

In addition, since the wave incident on the water supply port 20 is blocked by the inclined wall, the impact of the wave acts on the inclined wall in an oblique direction, so that a considerable portion of energy is dispersed and extinguished. It is possible to obtain an effect of minimizing impact acting.

That is, the present invention minimizes damage to the caisson structure, while ensuring an effective seawater flow with a simple structure and at the same time suppressing the propagation of waves to the utmost. By applying the present invention to a breakwaters, It is possible to obtain the effect of improving the water quality and the ecological environment of the port without inducing deterioration and it is possible to shorten the total air and reduce the construction cost by taking the same time and cost as the general caisson in the production of the sea- Can be obtained.

1 is a partially cutaway perspective view of a breakwater to which the present invention is applied;
2 is a perspective view of the present invention
3 is a rear perspective view of the present invention.
4 is a partial cutaway perspective view of the present invention
5 is a cross-sectional view
FIG. 6 is a plan view comparative view of the present invention,

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A detailed configuration of the present invention will be described with reference to the accompanying drawings.

As shown in the drawings, the present invention is a caisson used for a breakwater construction. The caisson includes a front wall 11 on the outer sea side, a ship wall 12 on the dock side, The side walls 13 connecting the wall 11 and the rear wall 12 are closed in a planar manner and a plurality of compartments 15 are formed in the front wall 11, the rear wall 12, And some of the compartments 15 are filled with parcels and embedded in the seabed so that a plurality of caissons are arranged in line in the longitudinal direction of the breakwaters so that the side walls 13 of adjacent caissons are in close contact with each other.

A breakwater superstructure such as a concrete deck or a slab is provided on the breakwater and a slit 19 is formed in the wall of the caisson including the front wall 11 to penetrate the wall. (19) Behind the compartment (15) acts as a water storage room, and the wave incident through the slit (19) is soaked and saved in the water storage room.

1, a caulking port 20 is formed at the center of the caisson according to the present invention so as to penetrate the caisson. Through the caulking port 20, seawater flows along the seawater, The downward inclined wall 31 and the upward inclined wall 32 are formed so as to suppress wave propagation of the wave incident from the outside sea. The caisson pouring port 20, the downward inclined wall 31 and the upward inclined wall 32 are shown in Figs. 2 to 4. Fig.

2 to 4, the water supply port 20 of the present invention is formed by cutting a caisson along the center line of the caisson in plan view. The water supply passage 20 is provided with a front wall 11 and a rear wall 12 are cut and formed with inner walls 21 for connecting both ends of the cutout of the front wall 11 and both ends of the cutout of the wall 12.

4, the water inlet 20 is a kind of water channel passing through the caisson. In the illustrated embodiment, the bottom plate of the caisson forms the bottom of the water outlet 20 And both side walls 21 transverse to the caissons form the side wall 13 of the water passage 20 so that an open channel is formed with respect to the entire section from the bottom of the caisson to the top, The sea level can be guaranteed against the water level over the sea level.

In addition, in the illustrated embodiment, the vents 20 extending from the lower portion to the upper portion of the caisson are formed, but most of the caissons for the breakwaters do not require the operating water level over the caisson heights, If the operation level considered to have the allowance in the water level is secured, the sea water can flow at all times, so that the lower end of the water outlet 20 can be adjusted upward.

2 to 4, a downward inclined wall 31 and an upward inclined wall 32 are provided in the interior of the water supply port 20 as wave breaking means. The inner wall 21 of the water inlet 20 Is provided with a downward inclined wall 31 extending from the upper end side of the piercing mouth 20 to the lower side of the piercing mouth 20 and a downward inclined wall 31 extending from the lower end side of the piercing mouth 20 to the other side inner wall 21 of the piercing mouth 20, Side upward sloping wall 32 is provided.

That is, the downward inclined wall 31 and the upward inclined wall 32, which are parallel to the center line of the planar caissons, are formed symmetrically in the water inlet 20, and the downward inclined wall 31 and the upward inclined wall 31, As shown in the cross-sectional view taken along the line A-A 'shown in the lower portion of FIG. 5, the first inclined surface 32 intersects the central portion of the caisson on the side surface, The end faces of the wall 31 and the upward inclined wall 32 are positioned on the same line on the plane of the caisson.

Therefore, the water inlet 20 has a completely closed structure by the front face and the wedge downward inclined wall 31 and the upward inclined wall 32 of the caisson, so that the wave propagating through the caisson can be effectively blocked, As shown in FIG. 6, through the unique X-shaped crossing structure between the downward sloping wall 31 and the upward sloping wall 32 of the present invention, the flow of seawater and the movement of marine life can be ensured even under any water level condition.

5, the downward sloping wall 31 and the upward sloping wall 32 are inclined with respect to the incident path of blue, and the impact of the wave is transmitted to the downward inclined wall 31 and the upward inclined wall 32 32), it is possible to remarkably reduce the impact due to the wave as compared with the orthogonal incidence.

In addition, since the downward inclined wall 31 and the upward inclined wall 32 formed in the water inlet 20 form a bracing structure, it is possible to effectively support the upper deck structure such as a deck.

11: Front wall
12: Roof wall
13: Side wall
15: compartment
19: slit
20:
21: inner wall
31: downward inclined wall
32: Upward inclined wall

Claims (1)

The front wall 11 on the outer sea side and the side wall 13 on both sides connecting the front wall 11 and the back wall 12 are integrally formed in a planar manner. A plurality of compartments 15 are formed in the compartments 12 and the side walls 13 and a part of the compartments 15 is filled with gravels,
The front wall 11 and the back wall 12 are cut along the upper and lower portions of the caisson and the inner wall 21 connecting the opposite ends of both the side edges of the front wall 11 and the side wall 12 is formed, (20) passing therethrough;
A downward inclined wall 31 extending from the upper end side of the water inlet 20 to the lower end side of the water inlet 20 is provided at one side inner wall 21 of the water supply port 20;
An upward inclined wall 32 extending from the lower end of the piercing mouth 20 to the upper side of the outer side of the water inlet 20 is provided in the other side inner wall 21 of the water inlet 20;
Characterized in that the downwardly inclined wall (31) and the upwardly inclined wall (32) intersect sideways and the end faces of the downwardly inclined wall (31) and the upwardly inclined wall (32) Sea water exchange type breakwater caisson.

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