KR20150141225A

KR20150141225A - Seawater exchanging caisson type breakwater

Info

Publication number: KR20150141225A
Application number: KR1020140069262A
Authority: KR
Inventors: 조용식; 조혜린
Original assignee: 한양대학교 산학협력단
Priority date: 2014-06-09
Filing date: 2014-06-09
Publication date: 2015-12-18

Abstract

The present invention relates to a breakwater comprising a plurality of caissons arranged in close contact with each other, wherein a recessed portion (20) is formed on a side surface of the caisson and an inclined wall is formed on the recessed portion (20) And the inclined walls of the two side caissons are crossed with each other on the side surface so that the wave propagation is suppressed but the flow of the anti-seawater sea water is made possible.
According to the present invention, it is possible to obtain an effect of improving the water quality and the ecological environment of the harbor without causing deterioration of sea level temperature (staticness), and in the production of a seawater exchange type caisson constituting a breakwater, The time and cost are required to shorten the total air and reduce the construction cost.

Description

[0001] SEAWATER EXCHANGING CAISSON TYPE BREAKWATER [0002]

The present invention relates to a breakwater comprising a plurality of caissons arranged in close contact with each other, wherein a recessed portion (20) is formed on a side surface of the caisson and an inclined wall is formed on the recessed portion (20) And the inclined walls of the two side caissons are crossed with each other on the side surface so that the wave propagation is suppressed but the flow of the anti-seawater sea water 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 breakwater 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 of a porous body and the inside of the caisson is filled with a particle for disinfection.

Conventionally, caissons for seawater exchange breakwaters, which can be classified into a water passage type, a blocking wall type, and a 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.

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 flow path through a breakwater while minimizing the structural stability deterioration of the caisson constituting the breakwaters, To minimize the impact of working waves, 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 caisson is formed by closely adhering and arranging the side walls 13. The caisson is recessed into both side walls 13 of the caisson to penetrate the inside of the caisson, A downward inclined wall 31 extending from the upper end side of the recessed portion 20 to the lower end side of the outer side of the recessed portion 20 is provided in the recessed portion 20 on one side, 20 is provided with an upward sloping wall 32 extending from the lower end of the recessed portion 20 to the upper side of the outer sea side and the upward sloping wall 31 and the upward sloped wall 32, And the end faces of the downward sloping wall 31 and the upward sloping wall 32 and the outer surface of the side wall 13 are located on the same plane as the plane of the caisson.

In the present invention, the caisson having a relatively simple structure in which the recessed portion 20 is formed on the side surface and the inclined wall is formed on the recessed portion 20 ensures the free flow of seawater over the operating water level of the breakwater, .

In particular, even if there is no water head difference between the front and back surface of the caisson, it is possible not only to smoothly flow seawater but also to freely move the marine life, and the water passage formed at the caisson connecting portion is formed on the front surface and the back surface of the caisson, Since the wall has a completely closed structure, wave propagation through the breakwater can be effectively blocked.

In addition, when the wave incident on the breakwater 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 the energy is dispersed and disappears. As a result, It is possible to obtain a minimized effect.

That is, the present invention minimizes deterioration of the breakwater structure while ensuring an effective seawater flow with a simple structure and at the same time suppressing the propagation of waves to the utmost. Through the present invention, it is possible to cause deterioration of the static temperature of the harbor It is possible to obtain the effect of improving the water quality and the ecological environment of the harbor without making it. In addition, it takes the same time and cost as the general caisson to manufacture the caisson used for the breakwater construction, Can be obtained.

1 is a partial cutaway perspective view of the present invention
Figure 2 is a perspective view of the caisson of the present invention
3 is a perspective view of a caisson extracting rear face of the present invention
FIG. 4 is a cross-sectional view
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 FIG. 1, the present invention is constructed in such a manner that a plurality of caissons are closely arranged and arranged in a row, and the caisson applied to the present invention includes a front wall 11 on the outer sea side Side walls 13 connecting the front wall 11 and the rear wall 12 are integrally formed in a planar manner and the front wall 11 and the rear wall 12 and the side walls 13, A plurality of compartments 15 are formed in the compartments 15, and some of the compartments 15 are filled with sediment, and are buried on the seabed.

A breakwater superstructure such as a concrete deck or a slab is installed on the upper part of the caisson and a slit 19 passing through the wall is formed in the wall of the caisson including the front wall 11 As a result, the compartment 15 in the rear portion of the slit 19 acts as an inflow chamber, and the wave incident through the slit 19 is reduced in the inflow chamber and the sofa is reduced.

1, the breakwater of the present invention is constructed by arranging a plurality of caissons in a line in a state where the side walls 13 of adjacent caissons are in close contact with each other. As shown in the figure, (Recessed) recessed portion 20 is formed. When the caissons are arranged, the recessed portion 20 of the adjacent caisson is combined to form a water passage in the form of a water passage through which the breakwater passes.

Therefore, without forming a water passage directly penetrating the main body of the caisson, a water passage can be formed naturally through the breakwater during the construction process in which a plurality of caissons are closely arranged and arranged, The problem of the conventional seawater exchange type caisson can be solved at all.

As a result, the sea water and the buoyant seawater flow through the combined water passage passing through the breakwater transversely crossing the breakwater. In the combined portion of the water inlet portion 20, that is, the downward inclined wall 31 and the upward inclined wall The concrete structure of the caisson in which the downward sloping wall 31 and the upward sloping wall 32 are formed is formed by the combination water of the incision part 20 as shown in Fig. 2 to Fig.

As shown in Figs. 2 to 4, the side walls 13 of the caisson applied to the present invention are recessed into the caisson to form a water passage extending over the front wall 11 and the back wall 12, A downward inclined wall 31 is formed on one of the concave portions 20 of the concave portions 20 of the caisson side walls 13 and an upward inclined wall 20 is formed on the other concave portion 20 32 are formed.

The downward inclined wall 31 provided at the concave portion 20 is an inclined wall extending from the upper end of the recessed portion 20 to the outer lower end side of the recessed portion 20 and the upward inclined wall 32 is formed at the lower end of the recessed portion 20 of the recessed portion 20 Is an inclined wall extending from the upper side to the upper sea side.

The downwardly inclined wall 31 and the upwardly inclined wall 32 are mutually intersected in an X-shaped manner on the side surface, and the end surfaces of the downwardly inclined wall 31 and the upwardly inclined wall 32 and the outer surface of the side wall 13, As shown in FIG.

Accordingly, as shown in FIG. 4, when the plurality of caissons are closely arranged, the downward inclined wall 31 of the one side caisson and the upward inclined wall 32 of the other side caisson intersect with each other in the X- Blocking and seawater flow functions are performed simultaneously.

On the other hand, as shown in Figs. 2 to 4, the water passage, which is formed by combining the concave portions 20, is a kind of water passage passing through the caisson. In the illustrated embodiment, Since the open channel is formed for the whole section, the flow of seawater can be guaranteed with respect to the water level over the entire height of the caisson. In case of most caissons for the breakwaters, the operation level throughout the caisson heights is not required. In the invention as well, if the operation water level considering the margin level at the highest water level according to the tide level is secured, the sea water can flow at all times, and the lower end portion of the incision 20 can be adjusted upward.

The downward inclined wall 31 and the upward inclined wall 32 which are wave breaking means formed on the wall of the concave portion 20 are formed in parallel with the side wall 13 of the planar caisson as in Fig. The downward inclined walls 31 and the upward inclined walls 32 on both sides are mutually symmetrical with respect to the center point of the contact surface between the caissons.

The downward sloping wall 31 and the upward sloping wall 32 intersect each other at the central portion of the caisson on the side, as in the sectional view taken along line A-A 'shown in the lower portion of Fig. 5, The end face of the downward sloping wall 31 and the end face of the upward sloping wall 32 are located on the same plane in the plane of the breakwater, as in the cross-sectional view of -B '.

Accordingly, the water passage formed by combining the recessed portions 20 has a structure completely closed by the front face and the wedge downward inclined wall 31 and the upward inclined wall 32 of the caisson, As shown in FIG. 6, the unique cross structure between the downward sloping wall 31 and the upward sloping wall 32 of the present invention ensures the flow of seawater and the movement of marine life in 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, the downward sloping wall 31 and the upward sloping wall 32 formed in the recessed portion 20 form a bracing structure of a kind, so that the upper deck structure such as a deck can be effectively supported.

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

Claims

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 plurality of caissons are filled in the compartments 15 and are embedded in the seabed so that the side walls 13 are closely arranged In the breakwaters,
The side walls 13 of the caissons are recessed inwardly of the caissons to form recesses 20 forming the passages extending over the front wall 11 and the rear wall 12;
A downward inclined wall 31 extending from the upper end side of the recessed portion 20 to the lower end side of the outer side is provided in the recessed portion 20 on one side;
An upward inclined wall 32 extending from the lower end of the recessed portion 20 of the recessed portion 20 to the upper side of the outer sea is provided in the other recessed portion 20;
The downwardly inclined wall 31 and the upwardly inclined wall 32 intersect sideways and the end face of the downwardly inclined wall 31 and the upwardly inclined wall 32 and the outer surface of the side wall 13 are formed in a plane- Wherein said seawater exchange type caisson type breakwater is located at a center of said seawater.