KR101220832B1 - Pontoon structure for improve of pitching and rolling resistance and floating structure system adoptive thereof - Google Patents

Pontoon structure for improve of pitching and rolling resistance and floating structure system adoptive thereof Download PDF

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KR101220832B1
KR101220832B1 KR1020100083497A KR20100083497A KR101220832B1 KR 101220832 B1 KR101220832 B1 KR 101220832B1 KR 1020100083497 A KR1020100083497 A KR 1020100083497A KR 20100083497 A KR20100083497 A KR 20100083497A KR 101220832 B1 KR101220832 B1 KR 101220832B1
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pontoon
pontoons
floating
present
seawater
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KR1020100083497A
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KR20120019908A (en
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정연주
유영준
황윤국
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한국건설기술연구원
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Abstract

The present disclosure relates to a pontoon structure for improving the shaking resistance and a floating structure system using the same. The present invention configures the pontoon-type floating structure in the form of a prismoid structure to provide an open space for transmitting blue waves on the side of the pontoon body, and to have a waffle-shaped recess in the lower portion thereof, and penetrates the lower portion in the blue penetrating space of the side surface. It is configured to install a seawater distribution port. Accordingly, the present invention reduces the impact force of the wave and provides the effect that the shake resistance is improved by the water pressure in three directions, and that the shake resistance by the wave as a whole is greatly improved by the natural attenuation effect by the seawater circulation.

Figure 112010055609257-pat00001

Description

Pontoon structure for improve of pitching and rolling resistance and floating structure system adoptive}

The present invention relates to a pontoon-type floating structure, and more particularly, a pontoon structure in the form of a prismoid, with a blue permeation space at the side, a waffle-shaped recess at the bottom, and a blue permeation space at the side. The present invention relates to a pontoon structure and a floating structure system using the same to improve the shaking resistance by forming a seawater distribution port penetrating the lower part to improve the shaking resistance caused by the waves.

Structures installed on the sea or under the sea are collectively called offshore structures, and classified into fixed, bottomed and floating types according to the method of connection with the seabed.

Floating structures are applied to floating marine structures, and the floating structures are usually manufactured in a pontoon type. Floating offshore structures are mainly used for the exploration, collection and storage of energy sources such as oil and natural gas, and for other leisure, harbor and environmental facilities.

The conventional pontoon-type floating structure 10 has a box-shaped structure of a hexahedron as shown in FIG. 1A, and uses the box-shaped (hexahedral) structure type of FIG. 1A as shown in FIG. 1B through welding or beam connection. It is composed of a simple structure of an extended form having continuously.

This conventional box-type pontoon structure type has been used a lot because it can maximize the volume submerged in seawater, so it is easy to secure buoyancy, and the internal space can be used for storage spaces and machine rooms.

However, as shown in FIG. 1B, since the side is closed to transmit the blue wave, the impact force due to the blue wave is transmitted to the floating structure as it is, resulting in a large wave and bending moment caused by the blue wave.

Therefore, there is a problem in that it is mainly available in a calm sea in the port where the blue wave hardly occurs, and the use of the blue wave in the sea where the blue wave occurs is limited due to the shaking condition.

In addition, in order to control the shaking and bending moments due to blue waves, the cross section of the pontoon has to be increased because a large draft and cross-sectional force indicating the depth of the submerged portion is required.

Accordingly, an object of the present invention is to solve the above-mentioned problems, the pontoon structure in the form of a prismoid structure instead of the conventional box shape, the blue penetrating space on the side, a waffle-shaped recess in the lower portion, and The present invention provides a pontoon structure and a floating structure system using the same to improve the shaking resistance by forming a seawater distribution port penetrating the lower part in the wave passing space of the side to improve the shaking resistance caused by the blue.

The pontoon structure for improving the shaking resistance of the present invention for achieving the above object, in the pontoon structure of the floating structure, the pontoon is composed of the top, bottom and body, the body is narrower from the bottom to the top The pyramidal shape is characterized in that when the pontoons are connected, an open space for transmitting blue waves is formed between the side surfaces of the body.

The pontoon structure for improving the shaking resistance for achieving the object of the present invention is also characterized in that the recess is formed at equal intervals in the lower pontoon.

In order to achieve the object of the present invention, the pontoon structure for improving the shaking resistance is also that at least one of the lower pontoons is bent to form a seawater distribution port for seawater distribution between the lower edges of each of the pontoons connected. It features.

Floating structure system applying the pontoon structure for improving the shaking resistance to achieve the object of the present invention, characterized in that the floating offshore structure is manufactured by using a pyramidal pontoon or a box-shaped pontoon and a pyramidal pontoon.

The pontoon structure and the floating structure system using the same for improving the shaking resistance of the present invention are applied to the pontoon by the bidirectional wave transmission space formed on the side of the pontoon floating structure by introducing a pyramidal structure type instead of the existing box type structure. It reduces the impact force of the wave, improves the resistance to shaking by three-way water pressure acting on the waffle-shaped recess formed in the lower part, and the natural attenuation effect by the seawater outlet that penetrates the lower part in the blue permeation space on the side. Overall, it has the effect of providing stable sea space by greatly improving the resistance to shaking due to blue waves.

Figure 1a-1b is a view showing the basic shape and expanded form of the box-shaped pontoon structure of the conventional pontoon floating structure, respectively,
Figure 2a-2b is a view showing the basic shape and expanded form of the pyramidal pontoon structure of the pontoon-type floating structure for improving the shaking resistance according to the present invention, respectively,
3a-3b is a view for comparing the wave transmission of the floating structure according to the conventional and pontoon structure of the present invention,
4a-4c is a view for comparing the shape of the lower portion according to the existing and pontoon structure of the present invention and the hydraulic pressure acting on it;
5 is a view showing a seawater distribution port structure penetrating the side and bottom in the pontoon structure of the present invention,
6 is a view showing a floating structure system applying a pontoon structure for improving the shaking resistance according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2a-2b shows the basic shape and expanded form of the pontoon structure for improving the shaking resistance according to the present invention, respectively.

The pontoon 20 structure of the present invention is composed of an upper, a lower, and a body, as shown in FIG. Consists of an extended form of pyramidal structure. The top and bottom of the pontoon 20 is a rectangular shape of a predetermined size having a bonding surface so as to connect and expand the pontoon as shown in FIG. Facilities will be installed according to the purpose.

In the pyramidal pontoon 20 of the present invention, as shown in FIG. 2B, the side open space 21 is naturally generated between adjacent pontoons. The generated side open space 21 enables the transmission of waves in both directions, which is an effect of reducing the impact force of the blue waves acting on the pontoon-type floating structure. It will work. In addition, since the center of gravity of the pyramid shape of the pontoon 20 is lower than that of the conventional box-shaped pontoon 10 shown in FIGS. 1A and 1B, the shape itself is more stable, thereby improving shaking resistance. In the present embodiment, the pyramid shape of the pontoon 20 is a square pyramid shape, but is not limited thereto, and may be in various forms such as a triangular pyramid or a truncated cone, such as a triangular pyramid or a hexagonal pyramid.

This type of structure allows buoyancy (locked volume), internal space, and cross-sectional rigidity to be similar to the existing box-type pontoons (10) while allowing the transmission of waves in both directions through the side space to reduce the shaking caused by the waves. do. That is, as shown in comparison with FIGS. 3a and 3b, respectively, the floating structure by the conventional box-shaped pontoon 10 of FIG. The floating structure by (20) has an open side and freely transmits waves through the space.

On the other hand, the lower portion of the pontoon 20 of the present invention, as shown in Figure 4a, as a whole has a structure having a waffle (waffled) of the rectangular lattice arrangement, the concave portion 23 is concave All four sides are configured in a trapezoidal shape that becomes narrower in width as they go inward. Since the same water pressure acts in three directions in the water, only the water pressure in the vertical direction acts as shown by the arrow in FIG. 4B in the lower portion of the flat pontoon 10 of FIG. 1A. However, in the lower part such as FIG. 4A having the waffle-shaped recess 23 like the pontoon 20 of the present invention, as well as the hydraulic pressure in the vertical direction as shown in FIG. Hydraulic pressure also acts so that the three-way water pressure acting on the concave portion 23 resists the shaking of the pontoon 20 and consequently improves the shaking resistance of the pontoon 20. In the present embodiment, the shape of the recess 23 of the pontoon 20 may be a trapezoidal shape of a square grid, but is not limited thereto, and may have various shapes such as a square or round shape of a square grid, but only three-way hydraulic pressure may be applied. In addition, the convex portion 25 generated by installing the concave portion 23 in the lower portion may be more advantageously used to secure the rigidity and strength of the floating structure according to the increase in the cross-sectional area of the lower portion.

Further, as shown in FIG. 5, a seawater distribution port 27 penetrating a lower portion in the open side surface 21 for permeation of blue is installed at each corner of the pyramid-shaped pontoon 20 as shown in FIG. (27) enables free seawater distribution on the sides and bottom. As shown in the enlarged view, the seawater distribution port 27 is formed by bending at least one corner portion of the lower pyramid-shaped pontoon 20 into a predetermined shape by bending the pontoons. Corner holes, that is, seawater flow openings 27, may be formed. In this embodiment, the bottom corner of the pontoon 20 is bent at a right angle to form a hollow rectangular seawater distribution port 27, but the present invention is not limited thereto. The structure of the various forms, but the bent shape of the lower edges of the pontoons to be conjoined to be opposed to each other, so that a hole (hole) is formed when the connection. Through the seawater distribution port 27 penetrating the space and the lower side of this side, the seawater flows from both sides and the lower side of the side naturally, so that the own weight of the seawater stored in the side open space 21 for penetrating the wave in the vertical direction is Slowly increasing and decreasing effects occur. At this time, the distribution of seawater improves the resistance to the shaking of the pontoon 20 by a natural attenuation effect that reduces the shaking speed and the period of the pontoon 20 by resisting the movement speed of the pontoon 20. This is the same principle that the movement of the human body in water is significantly slower than the movement in the atmosphere due to the resistance of the fluid.

At this time, the side open space 21 according to the pyramid-shaped pontoon 20 has a funnel shape to enable active seawater distribution through the seawater distribution port 27 to increase shaking resistance.

When manufacturing the pontoon-type floating offshore structure, as shown in Figure 3b is configured by applying the pyramid-shaped pontoon 20 of the present invention, or as shown in Figure 6 the existing box-shaped pontoon ( 10), the periphery may be applied to the pyramidal pontoon 20 of the present invention to produce a floating structure (30). In this case, it exhibits excellent shaking resistance due to blue than the existing box-type pontoon alone, which reduces the shaking problem when applied to rough seas, thereby making it possible to utilize stable maritime space for various purposes.

As described above, the pontoon structure and the floating structure system using the same for improving the shaking resistance according to the present invention have been described with reference to the illustrated drawings, but the present invention is not limited to the embodiments and drawings described above, and claims Various modifications and variations can be made by those skilled in the art within the scope of the present invention.

20: Pontoon 21: Blue transmission space
23 concave portion 25 convex portion
27: seawater distribution area

Claims (8)

In the pontoon structure of the floating structure,
The pontoon is composed of an upper portion, a lower portion, and a body, and the body has a pyramidal shape that becomes narrower from the lower portion to the upper portion. When one is bent to pontoons are connected to each other, the seawater outlet for seawater distribution is formed between the lower edge of each of the pontoons, pontoon structure for improving the shaking resistance. The pontoon structure of claim 1, wherein the pontoon body has a triangular pyramid, a square pyramid, a hexagonal pyramid, or a polygonal truncated cone. The pontoon structure of claim 1, wherein recesses are formed at equal intervals under the pontoons. The method of claim 3, wherein the concave portion has a waffle (waffled) shape of a rectangular grid arranged on the lower portion of the pontoon, all four concave surfaces are formed in a trapezoidal shape that is narrower in width as the inner side is improved. Pontoon structure for. delete The pontoon structure of claim 1, wherein the seawater distribution port is formed in a hollow rectangular shape when the pontoons are bent at right angles to be joined to the pontoons. Floating structure system consisting of a floating offshore structure consisting of the pontoon structure of any one of claims 1 to 4. 8. The floating structure system according to claim 7, wherein the floating offshore structure comprises box-shaped pontoons in the center and pyramidal pontoons in the periphery.
KR1020100083497A 2010-08-27 2010-08-27 Pontoon structure for improve of pitching and rolling resistance and floating structure system adoptive thereof KR101220832B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101687988B1 (en) 2015-07-15 2016-12-20 김인홍 Improved pontoon

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6364594U (en) * 1986-10-20 1988-04-28
KR20010085480A (en) * 2000-02-23 2001-09-07 추후제출 Low heave motion semi-submersible vessel
KR100619738B1 (en) 2005-03-18 2006-09-19 주식회사 씨포트 Floating apparatus on water
KR200441485Y1 (en) 2007-04-25 2008-08-20 주식회사폴리피아 Offshore Floating Structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6364594U (en) * 1986-10-20 1988-04-28
KR20010085480A (en) * 2000-02-23 2001-09-07 추후제출 Low heave motion semi-submersible vessel
KR100619738B1 (en) 2005-03-18 2006-09-19 주식회사 씨포트 Floating apparatus on water
KR200441485Y1 (en) 2007-04-25 2008-08-20 주식회사폴리피아 Offshore Floating Structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101687988B1 (en) 2015-07-15 2016-12-20 김인홍 Improved pontoon

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