KR20130093914A - Offshore structure and construction method thereof - Google Patents

Offshore structure and construction method thereof Download PDF

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KR20130093914A
KR20130093914A KR1020120015158A KR20120015158A KR20130093914A KR 20130093914 A KR20130093914 A KR 20130093914A KR 1020120015158 A KR1020120015158 A KR 1020120015158A KR 20120015158 A KR20120015158 A KR 20120015158A KR 20130093914 A KR20130093914 A KR 20130093914A
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sinking
marine structure
submerged
chamber
inlet
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KR1020120015158A
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KR101434603B1 (en
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권혁철
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정상종합건설 주식회사
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00—Caissons; Construction or placing of caissons
    • E02D23/08—Lowering or sinking caissons
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00—Caissons; Construction or placing of caissons
    • E02D23/02—Caissons able to be floated on water and to be lowered into water in situ
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/063—Tunnels submerged into, or built in, open water

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Wind Motors (AREA)
  • Earth Drilling (AREA)

Abstract

PURPOSE: A sinking-type marine structure with a plurality of water storing rooms and a construction method thereof are provided to prevent the marine structure from moving in a lateral direction and to control the speed of sinking at a time of sinking of marine structure. CONSTITUTION: A construction method of a sinking-type marine structure with a plurality of water storing rooms comprises the following steps of: lifting a sinking type marine structure (100) to the installation position in a state where an inlet (103) is closed; inducing water into a water storing room (120) by opening the inlet, and sinking the sinking type marine structure; and controlling the speed of sinking by slowly discharging air in the water storing room by repeating the opening and closing of the outlet (101).

Description

복수의 침수실을 구비한 침몰식 해양구조물 및 그 시공방법{OFFSHORE STRUCTURE AND CONSTRUCTION METHOD THEREOF}BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submerged offshore structure having a plurality of submergence chambers,

본 발명은 토목기술 분야에 관한 것으로서, 상세하게는 해양구조물의 시공방법에 관한 것이다.Field of the Invention [0002] The present invention relates to a civil engineering field, and more particularly, to a method of constructing an offshore structure.

해상교량의 교각의 기초, 해상 풍력발전 구조물의 기초와 같이 해저면에 설치되는 해양구조물은 현장에서 콘크리트 타설에 의해 시공하기가 대단히 곤란하므로, 이를 미리 지상에서 제조하여 해상의 설치위치까지 인양한 후, 침몰시켜 해저면에 설치하는 침몰식(침수식) 공법을 일반적으로 사용한다.It is very difficult to construct an offshore structure on the sea floor such as the foundation of bridge bridges and the foundation of offshore wind power generation structures because it is very difficult to construct by concrete casting in the field. , Sinking (submerging) method which is installed on the sea floor is commonly used.

도 1,2는 종래의 침몰식 해양구조물의 시공방법을 설명하기 위한 공정도이다.1 and 2 are process drawings for explaining a conventional method of constructing a submerged offshore structure.

종래의 침몰식 해양구조물(10)은 일반적으로 상부가 개방되고 내부에 해수의 수납공간(11)이 형성된 구조를 취하며, 이 수납공간(11)에 해수가 유입되어 해양구조물(10)이 침몰되는 방식을 취한다.The conventional submerged offshore structure 10 generally has a structure in which an upper portion is opened and a receiving space 11 for seawater is formed therein and seawater flows into the receiving space 11 to sink the offshore structure 10 .

그런데, 이러한 종래의 공법을 적용하는 경우, 침수 시 해수가 수납공간(11)에 일정하게 유입되지 않음으로 인하여 해양구조물(10)이 좌우로 유동하면서 침몰하게 되고, 침몰속도도 조절할 방법이 없으므로, 해양구조물(10)이 해저면이나 기설치된 해양구조물과 충돌하여 손상이 발생한다는 문제가 있었다.However, when such a conventional method is applied, since the seawater does not constantly flow into the storage space 11 during flooding, the offshore structure 10 sinks while flowing left and right, and there is no way to control the sinking speed. There is a problem that the offshore structure 10 collides with the ocean floor or the installed offshore structure to cause damage.

본 발명은 상기와 같은 문제점을 해결하기 위하여 도출된 것으로서, 해양구조물의 침몰 시 측방향 유동을 방지하고, 침몰속도를 조절할 수 있도록 하는 침몰식 해양구조물 및 그 시공방법을 제시하는 것을 그 목적으로 한다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a submerged offshore structure and a method of constructing the submerged offshore structure, which can prevent a lateral flow when a marine structure sinks and control a sinking speed .

상기 과제의 해결을 위하여, 본 발명은 본체(110); 상기 본체(110)의 내부에 폐쇄구조로 형성됨과 아울러, 상하로 복수가 형성된 침수실(120); 상기 복수의 침수실(120) 중 최하부 침수실(120c)의 하부에 형성된 유입구(103); 상기 복수의 침수실(120) 상호를 연결하는 연결통로(102); 상기 복수의 침수실(120) 중 최상부 침수실(120a)의 상부에 형성된 유출구(101);를 포함하는 것을 특징으로 하는 침몰식 해양구조물(100)을 제시한다.In order to solve the above-described problems, the present invention provides a display apparatus including a main body 110; A water immersion chamber 120 formed in a closed structure inside the body 110 and having a plurality of upper and lower portions; An inlet 103 formed in a lower portion of the lowermost water immersion chamber 120c of the plurality of water immersion chambers 120; A connection passage (102) connecting the plurality of immersion chambers (120); And an outflow port (101) formed on an upper part of the uppermost water immersion chamber (120a) of the plurality of water immersion chambers (120).

상기 침수실(120)의 폭은 상기 유입구(103), 연결통로(102) 및 유출구(101)의 폭에 비해 크게 형성된 것이 바람직하다.The width of the water immersion chamber 120 is preferably larger than the width of the inlet 103, the connection passage 102 and the outlet 101.

상기 침수실(120)의 폭은 높이에 비해 크게 형성된 것이 바람직하다.The width of the water immersion chamber 120 is preferably larger than the height.

본 발명은 상기 침몰식 해양구조물(100)의 시공방법으로서, 상기 유입구(103)를 폐쇄한 상태에서, 상기 침몰식 해양구조물(100)을 해양의 설치위치로 인양하는 인양단계; 상기 유입구(103)를 개방하여 상기 침수실(120)에 물이 유입되도록 함으로써, 상기 침몰식 해양구조물(100)을 침몰시키는 침몰단계;를 포함하는 것을 특징으로 하는 침몰식 해양구조물의 시공방법을 함께 제시한다.The present invention relates to a method of constructing the sinking offshore structure (100), comprising the steps of lifting the sinking offshore structure (100) to a position where the sinking structure is installed, with the inlet (103) closed; And a sinking step of sinking the sinking offshore structure (100) by opening the inlet (103) to allow water to flow into the water immersion chamber (120). Together.

상기 침몰단계는 상기 유출구(101)의 폐쇄 및 개방을 반복하여, 상기 침수실(120)의 공기가 천천히 배출되도록 함으로써, 상기 침몰식 해양구조물(100)의 침몰속도를 조절하는 침몰속도 조절단계;를 더 포함하는 것이 바람직하다.The sinking step may include a sinking rate control step of controlling the sinking rate of the sinking-type offshore structure 100 by repeating the closing and opening of the outflow port 101 so that the air in the sinking room 120 is slowly discharged; .

상기 침몰단계는 상기 유출구(101)를 통해 공기를 역유입하여, 상기 침수실(120)의 공기의 부피가 천천히 감소하도록 함으로써, 상기 침몰식 해양구조물(100)의 침몰속도를 조절하는 침몰속도 조절단계;를 더 포함하는 것이 바람직하다.In the sinking step, the volume of the air in the water immersion chamber 120 is slowly decreased by reversely flowing air through the outlet 101 to adjust the sinking speed of the sinking water structure 100 The method further comprising:

본 발명은 해양구조물의 침몰 시 측방향 유동을 방지하고, 침몰속도를 조절할 수 있도록 하는 침몰식 해양구조물 및 그 시공방법을 제시한다.The present invention proposes a submerged offshore structure and its construction method that can prevent lateral flow when sinking an offshore structure and control the sinking speed.

도 1,2는 종래의 침몰식 해양구조물의 시공방법을 설명하기 위한 공정도.
도 3 이하는 본 발명의 실시예를 도시한 것으로서,
도 3은 침몰식 해양구조물의 일실시예의 단면도.
도 4,5는 침몰식 해양구조물의 시공방법의 제1 실시예의 공정도.
도 6은 침몰식 해양구조물의 시공방법의 제2 실시예의 공정도.1 and 2 are process drawings for explaining a conventional method of constructing a submerged offshore structure.
3 or less shows an embodiment of the present invention,
3 is a cross-sectional view of one embodiment of a sinking offshore structure.
4 and 5 are process drawings of a first embodiment of a method of constructing a submerged offshore structure.
6 is a process diagram of a second embodiment of a method of constructing a submerged offshore structure.

이하, 첨부도면을 참조하여 본 발명의 실시예에 관하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3 이하에 도시된 바와 같이, 본 발명에 의한 침몰식 해양구조물(100)은 기본적으로, 본체(110); 본체(110)의 내부에 폐쇄구조로 형성됨과 아울러, 상하로 복수가 형성된 침수실(120); 복수의 침수실(120) 중 최하부 침수실(120c)의 하부에 형성된 유입구(103); 복수의 침수실(120) 상호를 연결하는 연결통로(102); 복수의 침수실(120) 중 최상부 침수실(120a)의 상부에 형성된 유출구(101);를 포함하여 구성된다.3, the submerged offshore structure 100 according to the present invention basically comprises a main body 110; A water immersion chamber 120 formed in a closed structure inside the main body 110 and having a plurality of upper and lower portions; An inlet 103 formed in a lower portion of the lowermost water immersion chamber 120c of the plurality of water immersion chambers 120; A connection passage (102) connecting the plurality of immersion chambers (120); And an outlet (101) formed in an upper part of the uppermost water immersion chamber (120a) among the plurality of water immersion chambers (120).

이는 유입구(103)를 폐쇄한 상태에서, 침몰식 해양구조물(100)을 해양의 설치위치로 인양하고, 유입구(103)를 개방하여 침수실(120)에 물이 유입되도록 함으로써, 침몰식 해양구조물(100)을 침몰시키는 방식에 의해 시공된다.This allows the submerged offshore structure 100 to be lifted to the installation position of the ocean while the inlet 103 is closed and water is introduced into the submergence chamber 120 by opening the inlet 103, (100) is sunk.

이러한 구성을 취하는 경우, 복수의 침수실(120) 중 최하부 침수실(120c)에서부터 물이 서서히 차오르게 되는데, 이 시점에서 해양구조물(100)의 하부에는 물이 차있지만 상부는 공기가 차있게 되므로, 안정적인 부력 구조를 이루게 되어 해양구조물(100)의 측방 유동이 일어나지 않게 된다.When this configuration is adopted, water slowly flows from the lowermost water immersion chamber 120c among the plurality of water immersion chambers 120. At this point, water is present in the lower part of the ocean structure 100, So that the buoyancy structure is stabilized and the lateral flow of the offshore structure 100 does not occur.

또한, 최하부 침수실(120c)로부터 연결통로(102)를 통해 최상부 침수실(120a)까지 물이 차야 비로소 침수가 완료되게 되므로, 침몰속도가 느리게 됨에 따라, 해양구조물(100)이 해저면 또는 기설치된 해양구조물과 빠른 속도로 충돌하여 손상되는 것을 방지할 수 있다.Since the submergence of the water from the lowermost water immersion chamber 120c to the uppermost water immersion chamber 120a through the connection passage 102 is completed, It can be prevented from colliding with the installed offshore structure at a high speed to be damaged.

나아가, 추후 해양구조물(100)의 해체 시에는, 유출구(101)를 통해 공기를 역주입하여 해양구조물(100)을 부양시키는 방식을 취하면 되므로, 해체작업이 용이하다는 장점이 추가된다.Further, when the offshore structure 100 is to be dismantled, the offshore structure 100 may be floated by injecting air through the outflow port 101, so that the disassembly operation is facilitated.

이를 위하여, 침수실(120)의 폭은 유입구(103), 연결통로(102) 및 유출구(101)의 폭에 비해 크게 형성되는 것이 바람직하다.It is preferable that the width of the water immersion chamber 120 is formed larger than the width of the inlet 103, the connecting passage 102 and the outlet 101.

즉, 유입구(103), 연결통로(102) 및 유출구(101)의 폭이 침수실(120)의 폭에 비해 상당히 작게 형성되는 것이 필요한 것이다.That is, it is necessary that the width of the inlet port 103, the connecting passage 102 and the outlet port 101 is formed to be considerably smaller than the width of the water immersion chamber 120.

또한, 침수실(120)의 폭은 높이에 비해 크게 형성된 구조(납작한 구조)를 취하는 것이 안정적으로 서서히 상부를 향하여 물이 차오르도록 한다는 측면에서 바람직하다.In addition, it is preferable that the width of the water immersion chamber 120 is made larger than the height (flat structure) in terms of stably and slowly bringing water upward.

이러한 구조의 해양구조물(100)의 침몰 시 그 침몰속도는 다음과 같은 방법에 의해 조절할 수 있다.The sinking speed of an offshore structure 100 having such a structure can be controlled by the following method.

첫째, 유출구(101)의 폐쇄 및 개방을 반복하여, 침수실(120)의 공기가 천천히 배출되도록 함으로써, 침몰식 해양구조물(100)의 침몰속도를 조절하는 방식을 취할 수 있다.First, a method of regulating the sinking speed of the sinking-type offshore structure 100 by repeating the closing and opening of the outflow opening 101 and allowing the air in the water immersion chamber 120 to be slowly discharged.

즉, 유출구(101)를 통한 공기의 배출속도는 유입구(103)를 통한 해수의 유입속도에 비례할 것이므로, 공기의 배출속도를 조절함으로써 해수의 유입속도를 조절할 수 있는 것이다.That is, the discharge speed of the air through the outlet 101 is proportional to the inflow speed of the seawater through the inlet 103, so that the inflow speed of the seawater can be adjusted by adjusting the discharge speed of the air.

둘째, 유출구(101)를 통해 공기를 역유입하여, 침수실(120)의 공기의 부피가 천천히 감소하도록 함으로써, 침몰식 해양구조물(100)의 침몰속도를 조절하는 방식을 취할 수 있다.Secondly, it is possible to regulate the sinking speed of the sinking-type offshore structure 100 by allowing air to flow in through the outflow port 101 to slowly decrease the volume of the air in the water immersion chamber 120.

물체의 부력은 수중에서 그 물체가 차지하는 부피에 비례하는데, 공기와 같은 압축성 유체의 경우, 수심이 깊은 곳에 들어갈수록 수압에 의해 부피가 작아지게 되므로, 그 부력도 점차 작아지게 된다.The buoyancy of an object is proportional to the volume occupied by the object in water. In the case of a compressible fluid such as air, the buoyancy becomes smaller as the volume becomes smaller by the water pressure as it enters a deep water depth.

따라서 고심도의 수중에 설치되는 대규모 해양구조물의 경우에는, 본 실시예와 같이, 고압 공기주입기(200) 등에 의해 유출구(101)를 통해 공기를 역유입하여, 침수실(120)의 공기의 부피가 고심도의 상태에 불구하고 천천히 감소하도록 함으로써, 침몰속도를 조절하는 것이 더욱 바람직한 것이다(도 6).Therefore, in the case of a large-scale offshore structure installed in a high-altitude water, the air is flowed backward through the outlet 101 by the high-pressure air injector 200 or the like as in the present embodiment, (FIG. 6), by slowing down the rate of sinking despite the high degree of severity.

이상은 본 발명에 의해 구현될 수 있는 바람직한 실시예의 일부에 관하여 설명한 것에 불과하므로, 주지된 바와 같이 본 발명의 범위는 위의 실시예에 한정되어 해석되어서는 안 될 것이며, 위에서 설명된 본 발명의 기술적 사상과 그 근본을 함께 하는 기술적 사상은 모두 본 발명의 범위에 포함된다고 할 것이다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

100 : 침몰식 해양구조물 101 : 유출구
102 : 연결통로 103 : 유입구
110 : 본체 120 : 침수실100: sinking type offshore structure 101: outlet
102: connecting passage 103: inlet
110: main body 120: water immersion chamber

Claims (6)

본체(110);
상기 본체(110)의 내부에 폐쇄구조로 형성됨과 아울러, 상하로 복수가 형성된 침수실(120);
상기 복수의 침수실(120) 중 최하부 침수실(120c)의 하부에 형성된 유입구(103);
상기 복수의 침수실(120) 상호를 연결하는 연결통로(102);
상기 복수의 침수실(120) 중 최상부 침수실(120a)의 상부에 형성된 유출구(101);
를 포함하는 것을 특징으로 하는 복수의 침수실을 구비한 침몰식 해양구조물(100).Main body 110;
A water immersion chamber 120 formed in a closed structure inside the body 110 and having a plurality of upper and lower portions;
An inlet 103 formed in a lower portion of the lowermost water immersion chamber 120c of the plurality of water immersion chambers 120;
A connection passage (102) connecting the plurality of immersion chambers (120);
An outlet 101 formed in an upper portion of the upper submerged chamber 120a among the plurality of submerged chambers 120;
Sinking marine structure (100) having a plurality of submerged chamber, characterized in that it comprises a. 제1항에 있어서,
상기 침수실(120)의 폭은 상기 유입구(103), 연결통로(102) 및 유출구(101)의 폭에 비해 크게 형성된 것을 특징으로 하는 복수의 침수실을 구비한 침몰식 해양구조물(100).The method of claim 1,
The width of the submerged chamber 120 is larger than the width of the inlet 103, the connection passage 102 and the outlet 101, the sunken marine structure having a plurality of submerged chambers (100). 제2항에 있어서,
상기 침수실(120)의 폭은 높이에 비해 크게 형성된 것을 특징으로 하는 복수의 침수실을 구비한 침몰식 해양구조물(100).The method of claim 2,
The submerged marine structure 100 having a plurality of submerged chambers, characterized in that the width of the submerged chamber 120 is formed larger than the height. 제1항 내지 제3항 중 어느 한 항의 침몰식 해양구조물(100)의 시공방법으로서,
상기 유입구(103)를 폐쇄한 상태에서, 상기 침몰식 해양구조물(100)을 해양의 설치위치로 인양하는 인양단계;
상기 유입구(103)를 개방하여 상기 침수실(120)에 물이 유입되도록 함으로써, 상기 침몰식 해양구조물(100)을 침몰시키는 침몰단계;를
포함하는 것을 특징으로 하는 침몰식 해양구조물의 시공방법.As a method of construction of the sinking marine structure 100 according to any one of claims 1 to 3,
A salvage step of lifting the sinking offshore structure (100) to an installation position of the ocean while the inlet (103) is closed;
The sinking step of sinking the sinking marine structure 100 by opening the inlet 103 to allow water to flow into the submerged chamber 120;
Construction method of the sunk marine structure comprising a. 제4항에 있어서,
상기 침몰단계는
상기 유출구(101)의 폐쇄 및 개방을 반복하여, 상기 침수실(120)의 공기가 천천히 배출되도록 함으로써, 상기 침몰식 해양구조물(100)의 침몰속도를 조절하는 침몰속도 조절단계;를
더 포함하는 것을 특징으로 하는 침몰식 해양구조물의 시공방법.5. The method of claim 4,
The sinking step
Repeating the closing and opening of the outlet 101, so that the air in the submerged chamber 120 is slowly discharged, the sinking speed adjusting step of adjusting the sinking speed of the sinking marine structure 100;
Construction method of the sunken marine structure further comprises. 제4항에 있어서,
상기 침몰단계는
상기 유출구(101)를 통해 공기를 역유입하여, 상기 침수실(120)의 공기의 부피가 천천히 감소하도록 함으로써, 상기 침몰식 해양구조물(100)의 침몰속도를 조절하는 침몰속도 조절단계;를
더 포함하는 것을 특징으로 하는 침몰식 해양구조물의 시공방법.5. The method of claim 4,
The sinking step
Sinking speed adjusting step of adjusting the sinking speed of the sinking marine structure 100 by slowly introducing air through the outlet 101 so that the volume of the air in the submerged chamber 120 is slowly reduced;
Construction method of the sunken marine structure further comprises.
KR1020120015158A 2012-02-15 2012-02-15 Offshore structure and construction method thereof KR101434603B1 (en)

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