KR100764915B1 - Floating breakwater of low centroid comprising extending pannel - Google Patents

Abstract

A low center type floating breakwater is provided to reduce roll motion, and minimize the shaking of the floating breakwater by installing at least a pair extending walls and mounting a weight body. A low center type floating breakwater comprises a floating body part(10), extending walls(20a,20b), and a weight body(30). The floating body part is floated on a sea water surface. The extending walls are extended from the floating body part, and separated from each other to be opposed. The weight body is placed at the lower part of the extending bodies to make the floating body part have low center. The lower part between the extending walls is opened and through holes(26a,26b) are formed in the extending walls for inflow of the sea water. The extending walls include upper reinforcements(21), center reinforcements(22a,22b), and lower reinforcements(23).

Description

Floating breakwater of low centroid comprising extending pannel

1A illustrates a typical gravity hybrid breakwater.

Figure 1b is a view showing a typical gravity slope breakwater.

Figure 2 is a perspective view showing a low center of gravity breakwater according to a first embodiment of the present invention.

3 is a cross-sectional view taken along the line II ′ of FIG. 2.

Figure 4 is an exploded perspective view of the floating body portion provided in the low center of gravity breakwater according to the first embodiment of the present invention.

5 is a perspective view showing a low center of gravity breakwater according to a second embodiment of the present invention.

6 is a perspective view showing a low center of gravity breakwater according to a third embodiment of the present invention.

7 is a perspective view showing a low center of gravity breakwater according to a fourth embodiment of the present invention.

8 is a cross-sectional view taken along the line II-II ′ shown in FIG. 7.

Figure 9 is an exploded perspective view of the floating body portion provided in the low center type breakwater according to the fourth embodiment of the present invention.

Figure 10 (a) is a view showing a state in which a low center of gravity breakwater including an extension wall according to the present invention phase-up flow.

Figure 10 (b) is a view showing a state in which the low center of the breakwater including the extension wall in accordance with the present invention mooring the bottom.

Figure 11 (a) (b) is a view showing a state in which the low center of the secondary breakwater according to the present invention in both phases.

12 is a view showing a correlation between buoyancy and eccentric force of a low center of type breakwater comprising an extension wall according to the present invention.

13 is a graph showing the transmission characteristics according to the width wavelength ratio of the breakwater in the present invention and the comparative example.

<Explanation of symbols for main parts of the drawings>

10: floating body portion 10a: floating body

20a, 20b: extension wall 21: upper reinforcement

22a, 22b: center stiffener 23: lower stiffener

25: vertical fixing bar 26a, 26b, 29a, 29b: through hole

27: horizontal sofa plate 28: bulkhead

30: weight 41: upper mooring plate

42: lower mooring plate 43: connecting member

43a: auxiliary connecting member

TECHNICAL FIELD The present invention relates to a breakwater, and a low center type breakwater including an extension wall.

In general, the breakwater is an outer facility to protect a port facility or a ship from the waves of the open sea. It is a gravity type that is fixed on the sea floor such as a structural stone breakwater, an upright breakwater, a hybrid breakwater, a sofa block-covered hybrid breakwater, and a sloped breakwater. It is a structure.

Hybrid breakwater 100 of the conventional gravity type breakwater, as shown in Figure 1 (a), is firmly supported on the sea floor (B) and submerged in the seawater, which is a substructure that blocks the flow of seawater mounds ( 110, and the caisson 120, which is supported on the upper surface of the sandstone mound 110 and a part of the upper portion protrudes over the surface of the seawater and absorbs the blue energy transmitted along the sea surface T. . In addition, the sofa block-coated hybrid breakwater is configured to have a sofa function by installing a release block (not shown) on the front of the caisson 120.

And, the inclined breakwater 200, as shown in Figure 1 (b), the lower end is firmly supported on the sea bottom (B), the left and right sides of the sandstone mound 210 and both sides inclined at a predetermined angle, sea level Consists of a concrete cap 220 is installed on the upper surface of the sandstone mound 210 to be exposed on (T).

Conventional gravity breakwater is configured as described above, the mound mound (110, 210) of the lower structure blocks the seawater flow in the deep portion to prevent the inflow of seawater into the harbor and the upper structure caisson 120 is sea level It was to block the wave energy transmitted along the way to perform the breakwater function.

Accordingly, since the gravity breakwater is a structure that is integrally constructed from the bottom to the surface of the sea, it is true that the structure is stable and has the advantage of safely anchoring the vessels by sufficiently maintaining the constant temperature in the harbor. In addition, due to excessive blockage of the sea water there was a problem that the sea water circulation is not made smoothly, the water quality in the harbor is contaminated.

In addition, the gravity breakwater has a problem that the height of the upper structure is higher than necessary during the low tide, since the upper structure must be installed on the basis of the high tide in the region where the tidal difference is large, and the lower structure is firmly supported on the sea bottom. To this end, not only the excessive amount of dredging and material increase, but also the construction conditions are not good due to underwater construction, there is a problem that the construction is delayed and the construction cost is rapidly increased.

On the other hand, in order to solve the problems of the gravity breakwater floating floats on the sea surface by fixing them to the bottom of the sea through a chain or cable by way of a breakwater that reflects or extinguishes the blue waves coming from the sea to the inner sea side is known.

However, these breakwaters have the advantage of being able to be installed in a short period of time at low cost in places where the breakwater is difficult to install due to the deep water depth, the difference between tidal tides, and the ground is soft, while preventing the water pollution in the harbor. Attention Blue has a weak point.

In addition, the disappearance ability of the transmitted wave passing between the floating body and the sea floor is reduced, and the restoring power is weak when the floating body is shaken by the wave energy, so it is synchronized with the movement of the wave or generates a diverging wave due to the shaking. It has a problem of degrading performance.

It is an object of the present invention to provide a low center type breakwater having a structure in which wave energy transmitted to the breakwater can be effectively dissipated.

Another object of the present invention is to provide a low center of type breakwater having a structure that is easy to install, the installation cost can be reduced.

Low center type breakwater according to an aspect of the present invention; An extension wall extending from the floating body part and spaced apart from each other; And a weight body disposed below the extension wall such that the breakwater has a low center of gravity.

The lower part between the extending wall facing each other is characterized in that the open so that the sea water can be introduced.

According to the low center type of breakwater comprising an extension wall according to an aspect of the present invention, at least one pair of lengths extending directly below the left and right sides of the floating body portion floating a portion of the body on the sea surface, the lower portion between them By providing an extended wall of and having a weight body disposed below it so that the auxiliary wave breaker has a low center of gravity, the wave energy transmitted to the negative breakwater can be dissipated. Therefore, it is possible to increase the restoring force to the original state of the floating body which flows from side to side by such wave energy, to reduce the roll motion movement to minimize the shaking of the breakwater, and the reflection and sofa performance can be improved. have.

In addition, according to the low center type breakwater, the wave energy of the incident wave on the straight wall of the breakwater is significantly reduced, which can lower the transmittance of the long-period wave transmitted to the inner sea side, and the seawater circulation is below the extended wall. It is naturally made to prevent water pollution in the harbor, while the depth of the water, the tidal difference is severe, and the ground is fragile, so it can be installed quickly at low cost in the place where the breakwater is difficult to install.

Hereinafter, with reference to the drawings will be described in the breakwater according to the embodiments of the present invention.

FIG. 2 is a perspective view illustrating a low center type breakwater according to a first embodiment of the present invention, FIG. 3 is a cross-sectional view taken along line II ′ of FIG. 2, and FIG. 4 is a first embodiment of the present invention. Is an exploded perspective view of the floating body portion provided in the low center type breakwater according to.

2 to 4 together, the sub breakwater 1 according to the present embodiment has a deep water depth, a large difference between tidal tides, and the ground is soft, so that the floating part made of steel is difficult to install the gravity breakwater at sea level. As an airtight space is formed in the inside to be floated up, and the floating floating part is difficult to float, such a breakwater 1 includes a floating part 10, an extension wall 20, and a weight 30. It is configured by.

That is, the floating body portion 10 is provided with at least one floating body (10a) having an internal space sealed inside so that it can float on the sea surface (T).

This floating body (10a) is a rectangular parallelepiped iron structure consisting of a rolled steel plate material for welded structure consisting of upper and lower plates (11) (12), side plates (13a) and (13b) and front and rear sealing plates (14, 15). Consists of water. However, the present invention is not limited thereto, and may be made of a synthetic steel concrete structure in which steel materials and concrete are synthesized.

The floating body 10a having such a configuration is arranged in plural in a longitudinal direction.

The upper and lower plates 11 and 12 are rectangular plate members arranged in parallel in the longitudinal direction with a predetermined interval up and down, and the side plates 13a and 13b are left and right sides of the upper and lower plates 11 and 12. It is a rectangular welded structure steel plate which constitutes the left and right side walls by welding or fastening so that the edge and the upper and lower ends are perpendicular to each other, and the front and rear sealing plates 14 and 15 are the upper and lower plates 11 and 12. ) Is a steel plate for welded structure connected to seal the front and rear surfaces of the inner space on the rectangular cross section formed by the connection of the side plates (13a) and (b).

Accordingly, when the floating body 10 is composed of two or more floating body 10a, the rear sealing plate of the front floating body and the front sealing plate of the rear floating body may be composed of different members, but jointly It is preferred to be used.

The extension walls 20a and 20b are formed of a pair of left and right vertical rectangular plates facing each other by extending a predetermined length from the left and right sides of the floating body portion 10 which is locked below the sea level to face directly below each other.

The extended walls 20a and 20b are connected to the lower ends of the side plates 13a and 13b constituting the floating body 10a by welding or fastening, so that the left and right lower surfaces of the floating body 10a are left and right sides. It may be composed of a plate extending a certain length from directly below.

Here, the extension walls 20a and 20b are shown to be formed vertically from the left and right sides of the floating body portion 10 vertically, but this is exemplary. That is, a panel having a predetermined area extending from the upper part body 10 can function as the extension walls 20a and 20b in the present invention, and various shapes such as bends and bends are formed in such extension. It is also possible to, and it is to be understood that this type of extension wall is included in the spirit of the present invention.

In addition, the extension walls 20a and 20b are shown to extend in pairs left and right, but this is exemplary. That is, the extension walls 20a and 20b may be composed of at least one pair, that is, three, four (two pairs), or the like.

The lengths of the extended walls 20a and 20b are completely immersed in the water together with a part of the body of the floating body 10 so as to dissipate the transmitted wave and the wave energy transmitted to the side of the floating body 10. Longer than the height of the side of the floating body portion 10, it is preferable to be provided with a length corresponding to 20% or more of the depth of the breakwater is installed.

In addition, the total height (h of FIG. 3) of the extended walls 20a and 20b and the floating body 10a is the width of the lateral direction of the floating body 10a, that is, the width of the wave energy from the external sea. It is formed larger by a predetermined size than (b in Fig. 3).

By forming as described above, the width (b) of the floating body (10a) is minimized compared to the total height (h) of the floating body (10a), while minimizing the manufacturing cost of the floating body (10a), blue energy The area of the extended wall (20a, 20b) facing the sea water having an increase can be improved, the sofa performance of the breakwater (1).

In addition, the extension walls 20a and 20b are formed to extend downward from the floating body 10a, and the lower ends of the extension walls 20a and 20b are opened to the outside. That is, as shown in FIGS. 2 and 3, the lower space between the lower reinforcement 23 and the extension walls 20a and 20b on which the weight body 30 is disposed is opened to the outside. Seawater having a wave energy is flowed back into the space between the extension walls 20a and 20b through the open lower portion between the extension walls 20a and 20b. Since the seawater flowing between the extension walls 20a and 20b flows in the space blocked by the extension walls 20a and 20b, the wave energy may be dissipated. In addition, the flow in such a confined space can cause large and small vortices in the circulated seawater, dissipating the wave energy of the introduced seawater. Therefore, the sofa performance of the breakwater (1) can be improved.

The extension walls 20a and 20b are connected to the left and right ends of the upper plate 11 of the floating body 10a by welding or fastening so as to increase the coupling force with the floating body 10a. It may be composed of a plate extending a certain length from the left and right sides of 10a directly below.

Between the extending walls 20a and 20b facing each other, the upper reinforcing material 21 fixed to the lower surface of the floating body 10a to sufficiently endure the wave energy transmitted from the external sea, and the upper reinforcing material 21 of the Both ends and the upper ends of the central reinforcing material (22a) and (22b) intersecting in a 'Ｘ' shape, respectively, and the lower end and both ends of the central reinforcing material (22a, 22b) is fixed and at the same time the extension wall (20a, 20b) Equipped with a lower reinforcing material 23 is fixed to.

The center reinforcing materials 22a and 22b cross each other as described above to reinforce the extension wall bodies 20a and 20b.

In addition, the inner wall of the extension wall (20a, 20b) on the upper surface of the central reinforcing material 22 to be fixed to the extension wall (20a, 20b) that is continuously disposed in the longitudinal direction of the floating body portion 20, It is preferable to have an auxiliary reinforcement (24a, 24b) fixed to the lower end and both ends of the upper and lower reinforcement (21, 23).

A plurality of through holes 26a and 26b may be formed below the extension walls 20a and 20b. As the seawater passes freely through the through holes 26a and 26b, vortices are induced, and the wave energy of the seawater can be dissipated.

The weight body 30 is made of a material having a heavier specific gravity than water, so that the weight center of the breakwater 1 is placed at an arbitrary position between the lower portion of the floating body portion 10 and the lower end of the extension walls 20a and 20b. The pair of left and right extension walls 20a and 20b are heavy materials fixedly disposed at lower ends facing each other so as to be formed.

The weight body 30 is placed on the lower reinforcing material 23 which is fixed at both ends between the lower ends of the extending wall (20a, 20b) facing each other side by side in the longitudinal direction of the floating body portion 10 It is provided to be located in the lower center of the body portion (10). In addition to the arrangement as described above, the weight 30 may be located close to the extended wall (20a, 20b) side, that is, located on both sides of the lower portion of the floating body portion 10, and the like.

Since the weight body 30 is disposed below the floating body portion 10 in various forms as described above, the floating body portion 10 has a low center of gravity. After the oscillation, the return to its original state can be achieved quickly. In addition, the weight 30 disturbs the seawater flowing through the open lower portion of the extension walls 20a and 20b and bypasses the seawater, thereby dissipating the wave energy of the introduced seawater. Therefore, the reflection and sofa performance as well as the restoring force of the sub breakwater 1 to its original state can be improved.

On the other hand, the lower reinforcing material 23 is preferably provided with a vertical fixing bar 25 so that the left and right movement of the weight body 30 is difficult.

The breakwater (1) configured as described above is floating on the water surface, dissipating the wave energy transmitted from the external sea. Since the wave energy transmitted from the open sea is concentrated on the upper surface of the water, the concentrated wave energy of the upper surface of the water can be dissipated by the sub-breakwater (1).

5 is a perspective view illustrating a low center type breakwater according to a second embodiment of the present invention.

Referring to FIG. 5, the breakwater breaker 1a according to the present embodiment includes at least one horizontal sofa plate 27 along the length direction of the floating body part 10 under the outer surface of the extension walls 20a and 20b. It is.

Accordingly, the wave energy transmitted to the extension walls 20a and 20b of the sub breakwater 1a may be dissipated while colliding with the horizontal sofa plate 27.

Between the horizontal sofa plate 27 and the extending wall 20a, 20b, the horizontal sofa plate 27 can be firmly fixed in a horizontal state perpendicular to the vertical outer surface of the extending wall 20a, 20b. It is preferable to have a plurality of reinforcing plates (27a) so that.

On the other hand, the floating body portion 10 is provided with an upper mooring plate 41 connected to the upper end of the connection member 43 of a predetermined length such as a chain or wire to limit the floating movement, the connection member 43 The bottom of the sink is connected to the anchor block (4), which is a concrete structure that is fixed to the sinking position on the sea floor (B), the weight weight (5) is suspended in the middle.

Accordingly, the floating movement range of the floating body portion 10 connected to the connecting member 43 having the lower end fixed to the bottom surface B is limited by the length of the connecting member 43.

On the other hand, when the upper mooring plate 41 is provided on both the left and right sides of the floating body portion 10, as shown in Figs. 5 and 10 (a), the upper part of the breakwater (1a) to minimize the left and right shaking There is an advantage to this.

On the other hand, if a sudden large impact force is transmitted to the floating body portion 10 by a blue wave having a large energy, such as a typhoon, the tension is excessively increased in the connecting member 43 supporting it and thus the connecting member 43 The tension applied is excessively large, which may cause an accident to be cut off in the middle of the road.

6 is a perspective view illustrating a low center type breakwater according to a third embodiment of the present invention.

Referring to FIG. 6, the breakwater 1b according to the present embodiment has a predetermined length such as a chain or a wire so as to restrict the floating movement of the floating body 10 under the outer surface of the extension walls 20a and 20b. The lower mooring plate 42 is connected to the upper end of the connection member 43.

6 and 10 (b), when the lower mooring plate 42 is provided in the extended wall (20a) 20b corresponding to the position lower than the floating body portion 10, by blue The upper part of the sub breakwater (1b) can significantly reduce the tension burden on the connecting member (43) by allowing the upper swing range width to swing left and right about the lower step flow plate (42), which is a mooring line The connection between the connection member 43 and the mooring plate of the floating portion can prevent the accident.

FIG. 7 is a perspective view illustrating a low center type breakwater according to a fourth embodiment of the present invention, FIG. 8 is a cross-sectional view taken along the line II-II ′ of FIG. 7, and FIG. 9 is a fourth embodiment of the present invention. Is an exploded perspective view of the floating body portion provided in the low center type breakwater according to.

7 to 9 together, the breakwater 1c according to the present embodiment extends downwardly from the side plates 13a and 13b of the floating body 10a to extend the walls 20a and 20b. Is formed.

Through-holes (29a, 29b) are formed in the upper portion of the extended wall (20a), 20b, that is, the portion close to the floating body (10a). Through the through holes 29a and 29b, seawater near the surface of the water may flow in and out. The seawater near the surface of the water has a greater wave energy than the seawater in the relatively deep.

In the present embodiment, the partition wall 28 is disposed between the extension walls 20a and 20b to dissipate the wave energy in the vicinity of the water surface as described above.

In detail, the partition wall 28 has a wide plate shape having a predetermined area, and an upper end of the partition wall 28 is coupled to the lower plate 12 of the floating body 10a and extends from the lower plate 12. To achieve. In addition, the partition wall 28 is disposed to be wider in the front-rear direction of the floating body 10a, and is disposed to face the side of the floating body 10a.

As described above, as shown in FIG. 8, the seawater flowing between the extension walls 20a and 20b through one side through hole 29a is blocked by the partition wall 28. Then, the introduced seawater is discharged to the outside through the other side through-hole (29b) bypassing the partition wall 28 toward the other side through-hole (29b). In the process of bypassing the partition wall 28, the introduced seawater may cause vortices, and the blue energy of the seawater may be dissipated. Therefore, even when the through-holes 29a and 29b are formed near the surface of the water and the seawater having a relatively large wave energy acts on the sub breakwater 1c, the wave breaker 1c makes such wave energy reliable. Can be dissipated.

Figure 11 (a) (b) is a view showing a state in which the low center of the secondary breakwater according to the present invention in both phases.

Referring to Figure 11 (a) (b), the floating portion 10 is fixed to one end fixed to the bottom surface (B) to allow horizontal movement while minimizing excessive shaking of the upper portion of the breakwater (1) The upper mooring plate 41 is connected to the other end of the connecting member 43.

At the same time, the other end of the auxiliary connection member 43a of a predetermined length, one end of which is fixed to the connection member 43, so as to minimize the mooring tension applied to the connection member 43 to the extension walls 20a and 20b. The lower mooring plate 42 may be connected at the same time.

In addition, the front and rear edges of the floating body portion 10 may be provided with a cushioning material so as to reduce the impact when colliding with a float including a ship floating at sea.

The breakwater (1) (1a) (1b) is a tar-free epoxy that is harmless to the human body so that the inner surface is more harmless to the human body to prevent corrosion in exposed areas exposed to the atmosphere and underwater parts submerged in water (tar free epoxy) is used for painting, and the outer surface, which has a high degree of corrosion and is rapidly generated, is coated with a thick-film epoxy-based anticorrosive paint, while the underwater part adopts an anti-corrosion method by electric method. It is preferable.

The operation of the present invention having the configuration as described above will be described.

The breakwater (1) (1a) (1b) of the present invention is floated so that a body part is always exposed on the sea surface by a sealed space formed inside the floating body portion 10, from the left and right sides of the floating body portion 10 Extension walls 20a and 20b extending directly below are immersed below the sea level, and are suspended by the connecting member 42 connected to one end of the sea bottom to maintain floating state while the movement is restricted.

In this state, when the wave generated from the external sea hits the floating body part 10 while being pushed toward the inner sea side, the wave energy of blue waves continuously generated on the water surface is collided with the outer surface of the floating body 10. It is reduced and part is transmitted to the outer sea side by the reflected reflected wave.

Further, the wave energy transmitted below the sea level is reflected by the extension walls 20a and 20b immersed below the sea level, and the wave energy transmitted below the sea level is reflected.

At the same time, vortices are induced as seawater flows through the open lower portion between the extension walls 20a and 20b, and part of the wave energy of the seawater is dissipated as it interacts with the vortices.

In addition, when the through holes 26a and 26b are formed below the extension walls 20a and 20b, vortices are induced while the seawater flows through the through holes 26, such vortices and blue energy As it interacts, the wave energy is dissipated.

In addition, when through holes 29a and 29b are formed on the extension walls 20a and 20b, seawater having relatively large blue energy near the sea surface is introduced through the through holes 29a and 29b. do. The inflow seawater bypasses the partition wall 28, causing vortices, and the wave energy is dissipated while the vortex and the wave energy exchange with each other.

In addition, the movement component of the water particles due to the wave energy hitting the outer surface of the extended wall (20a, 20b) and the water flow generated strongly in the horizontal sofa plate 27 provided on the outer surface of the extended wall (20a, 20b) It is offset and dissipated by alternating current.

At this time, an external force is applied to the extension walls 20a and 20b by the wave energy, but between the extension walls 20a and 20b, the horizontal reinforcing material 21, the central reinforcing material 22, and the lower reinforcing material 23 are applied. Since it is designed to withstand wave energy, it is possible to maintain a stable vertical state below sea level.

And, the breakwater (1) (1a) (1b) is caused by the sway (Sway) movement by the horizontal force acting on the floating body portion 10 due to the circular motion of the water particles excessive vibration of the floating body portion 10 Although it may be generated, the sway movement is suppressed by the volume weight of the sea water column filled between the extension walls (20a, 20b) to minimize the shaking of the floating body.

On the other hand, the floating breakwater (1) (1a) (1b) floating on the sea surface is a roll motion (roll motion) in which the left and right ends of the floating body portion 10 shakes left and right by the wave energy transmitted from the external sea, but the extension wall The center of gravity is positioned lower than the floating part 10 by the weight 30 provided between the lower ends of the 20a and 20b to increase the restoring force of the floating part 10 to the original state, while the roll motion is increased. Can be reduced.

As shown in Fig. 12, the restoring force of the breakwater (1) (1a) (1b) swinging from side to side is the buoyancy force (B) of the floating body portion 10 and the center and weight of the floating body portion 10. It is determined by the eccentric force E1 (E2) which is proportional to the eccentric distance between (30).

That is, when the weight 30 is located between the lower ends of the extending walls 20a and 20b under the same condition of the buoyancy B of the floating body 10, the center of the floating body 10 ( C) and the eccentric force E2 proportional to the eccentric distance between the own weight A2 of the weight body 30 is the center C of the floating body part 10 and the weight body when the weight body is located in the floating body part 10. It is larger than the eccentric force E1 which is proportional to the eccentric distance between its own weight A1.

Accordingly, the horizontal restoring force of the sub breakwater (1) (1a) (1b) can be significantly increased as compared to the case where a weight body is provided in the floating body (10).

Figure 13 is a graph showing the transmission characteristics according to the width wavelength ratio of the sub-breakwater in the present invention and the comparative example, which is the implementation of the present invention having a weight body 30 between the lower end of the extending wall (20a, 20b) for example, a portion body 10, only the Comparative example to to generate the blue in the same conditions on the same sea-level of blue is negative by the breakwater is some dissipation rate of the blue passing through a lower transmittance of having (rate of transfer: C _t ) And the wavelength ratio of the width to the width B of the blue wave to the width L of the floating body 10 is shown.

In this graph, it can be seen that the transmittance of the present invention is markedly lower than that of the comparative example based on the width wavelength ratio 4 or more, and the sofa characteristics for the long period are improved.

The transmittance is remarkably low in the wavelength range of 4 to 7 and the wavelength is long and the wavelength is long. It can be seen that the response ability is excellent.

According to the low center type breakwater comprising an extension wall according to an aspect of the present invention, at least a pair of lengths extending directly below the left and right sides of the floating body portion in which a portion of the body floating on the sea surface, the lower portion is opened between them By providing an extended wall and having a weight body disposed below the breakwater to have a low center of gravity, the wave energy transmitted to the breakwater can be dissipated. Therefore, it is possible to increase the restoring force to the original state of the floating body which flows from side to side by such wave energy, and to reduce the roll motion movement to minimize the shaking of the breakwater, and the reflection and sofa performance can be improved. It has an effect.

In addition, according to the low center type breakwater, the wave energy of the incident wave on the straight wall of the breakwater is significantly reduced, which can lower the transmittance of the long-period wave transmitted to the inner sea side, and the seawater circulation is below the extended wall. It is naturally made to prevent water pollution in the harbor, while the depth of water, the tidal difference is severe, and the ground is fragile, so it is possible to install it quickly and inexpensively in places where breakwater installation is difficult.

While the invention has been shown and described with respect to specific embodiments thereof, those skilled in the art can variously modify the invention without departing from the spirit and scope of the invention as set forth in the claims below. And that it can be changed. Nevertheless, it will be clearly understood that all such modifications and variations are included within the scope of the present invention.

Claims (11)

In the breakwater, Floating part which can be injured in sea level; An extension wall extending from the floating body part and spaced apart from each other; And And a weight body disposed below the extension wall such that the breakwater becomes a low center of gravity. A lower center breakwater, characterized in that the lower portion between the facing walls facing each other is open so that the water can be introduced. The method of claim 1, The extending wall facing each other is formed with a through hole through which seawater can flow, and the low center of gravity type breakwater further comprises a partition wall through which seawater flowing between the through holes is bypassed. The method of claim 2, One end of the partition wall is fixed to the floating body portion low center type breakwater. The method of claim 1, The total height of the floating body portion and the extension wall is a low center of gravity breakwater, characterized in that formed larger than the width of the floating body portion in the direction to which the wave energy with the seawater is applied. The method of claim 1, The upper reinforcing material is fixed to the lower surface of the floating body between the mutually facing extension wall, and both ends and the top of the upper reinforcing material is fixed to each other and the lower end and both ends of the central reinforcing material and '중앙' shape It is fixed and at the same time low center type breakwater comprising an extension wall further comprises a lower reinforcing material which is fixed to the extension wall. The method of claim 1, The lower center of the breakwater including an extension wall having a plurality of through-holes in the lower portion of the extension wall to increase the formation of the vortex dissipating wave energy while freely passing sea water. The method of claim 1, The weight body is a low center of gravity type comprising an extended wall, characterized in that located in the width center of the floating body side by side in the longitudinal direction of the floating body portion to the lower reinforcing material is fixed between the lower ends of the extending wall facing each other Breakwater. The method of claim 1, The extended wall is a low center of gravity breakwater comprising an extension wall characterized in that it comprises at least one horizontal sofa plate in the longitudinal direction of the floating body portion on the lower surface. The method of claim 1, The floating body of the low center type breakwater comprising an extension wall characterized in that it has an upper mooring plate connected to the other end of the connection member of a predetermined length fixed to the bottom surface. The method of claim 1, The extended wall has a low center of gravity breakwater comprising an extended wall, characterized in that the bottom mooring plate is connected to the other end of the connection member of a certain length fixed to the bottom surface. The method of claim 1, The floating body is provided with an upper mooring plate connected to the other end of the connection member having a fixed length at one end on the sea bottom, and the extension wall is connected to the other end of the auxiliary connection member having a fixed length at one end to the connection member. Low center type breakwater comprising an extended wall, characterized in that it has a lower mooring plate.

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