KR20110118669A - Submersible platform with blocked thrust for offshore wind plants in open sea in concrete-steel hybrid solution - Google Patents

Submersible platform with blocked thrust for offshore wind plants in open sea in concrete-steel hybrid solution Download PDF

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KR20110118669A
KR20110118669A KR1020117018816A KR20117018816A KR20110118669A KR 20110118669 A KR20110118669 A KR 20110118669A KR 1020117018816 A KR1020117018816 A KR 1020117018816A KR 20117018816 A KR20117018816 A KR 20117018816A KR 20110118669 A KR20110118669 A KR 20110118669A
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platform
infrastructure
concrete
steel
central body
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Korean (ko)
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실베스트로 카루소
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블루 에이치 인털렉츄얼 프로퍼티 키프로스 리미티드
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B2021/003—Mooring or anchoring equipment, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B63B2021/505—Methods for installation or mooring of floating offshore platforms on site
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2231/00—Material used for some parts or elements, or for particular purposes
    • B63B2231/02—Metallic materials
    • B63B2231/04—Irons, steels or ferrous alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2231/00—Material used for some parts or elements, or for particular purposes
    • B63B2231/60—Concretes

Abstract

본 발명은 콘크리트-스틸 하이브리드 방식의 해상 풍력발전소용 잠수식 플랫폼에 관한 것으로, 이 플랫폼은 반잠수식 플랫폼으로서, PC로 만들어진 축대칭형 중앙 몸체와, 스틸로 만들어져 다수의 보강부재들을 이용해 몸체에 연결된 주변구조물을 구비한다. The present invention relates to a submersible platform for offshore wind power plants of a concrete-steel hybrid method, which is a semi-submersible platform, an axisymmetric central body made of PC, and made of steel and connected to a body using a plurality of reinforcing members. A peripheral structure is provided.

Description

콘크리트-스틸 하이브리드 방식의 해상 풍력발전소용 잠수식 플랫폼{SUBMERSIBLE PLATFORM WITH BLOCKED THRUST FOR OFFSHORE WIND PLANTS IN OPEN SEA IN CONCRETE-STEEL HYBRID SOLUTION}SUBMERSIBLE PLATFORM WITH BLOCKED THRUST FOR OFFSHORE WIND PLANTS IN OPEN SEA IN CONCRETE-STEEL HYBRID SOLUTION}

본 발명은 이태리 특허 제1331996호에 소개된 몇가지 특징을 갖는 콘크리트-스틸 하이브리드 방식의 해상 풍력발전소용 잠수식 플랫폼에 관한 것이다.The present invention relates to a submersible platform for offshore wind power plants of a concrete-steel hybrid type having several features as disclosed in Italian Patent No. 1331996.

상기 이태리 특허 1331996은 풍력발전소용의 지지 베이스와 해양플랜트의 이중 기능을 갖는 잠수식 부유 플랫폼에 관한 것이다. 플랫폼은 부분 잠수형으로서 현장까지 운반된 다음, 해저면에 설치된 기반구조물에 고정되는데, 이런 고정은 타이로드를 연결하여 이루어지고, 타이로드는 부력과 해수와 바람에 의한 외력으로 인한 영향과 중력과 압력을 견뎌야 한다.The Italian patent 1331996 relates to a submersible floating platform having a dual function of a support base for a wind power plant and an offshore plant. The platform is partly submerged and transported to the site and then secured to the infrastructure installed on the sea floor, which is secured by connecting tie rods, which are the effects of external forces caused by buoyancy, seawater and wind, and gravity and pressure. Endure it.

미국특허출원 2008/14025는 풍력발전기와 같은 구조물과 장비를 수면에 설치하는 시스템을 소개하는데, 여기서는 캐리어를 연결요소를 통해 기초구조물에 결합한다. 이 캐리어는 고유 부력을 갖고, 연결요소는 캐리어를 수중에 안정된 위치로 유지하는데 사용된다. US patent application 2008/14025 introduces a system for installing structures and equipment on the water surface, such as wind turbines, where the carrier is coupled to the foundation via connecting elements. This carrier has inherent buoyancy and the connecting elements are used to keep the carrier in a stable position in water.

WO02/10589에서 소개된 풍력발전기는 해수면에 설치되는 것으로 콘크리트나 스틸로 된 반잠수 구조물을 이용해 풍력터빈을 운반한다. 반잠수 구조물은 부력실을 갖고 있으며 계류선과 같은 1차 앵커케이블과 2차 앵커케이블을 이용해 해저면에 고정된다. 1차 앵커케이블은 연결브래킷을 통해 부력실에 고정된다. 또, 반잠수 구조물을 1차 앵커케이블로 부력에 대항해 아래로 당겨주는 위치기구도 있다. The wind turbine introduced in WO02 / 10589 is installed at sea level and transports wind turbines using semi-submersible structures made of concrete or steel. Semi-submersible structures have buoyancy chambers and are anchored to the sea floor using primary and secondary anchor cables, such as mooring lines. The primary anchor cable is fixed to the buoyancy chamber via a connecting bracket. There is also a positioning mechanism that pulls the semi-submersible structure down against the buoyancy with the primary anchor cable.

FR1,327,924에서 소개된 플랫폼은 PC(pre-stressed concrete)로 만들어진 제1, 제2 수문들을 갖는다. 제2 숨문은 케이블로 제위치에 고정된다. 수위조정을 위해 모서리마다 윈치가 설치되고, 이런 윈치는 사용중에 바닷물에 노출된다.The platform introduced in FR1,327,924 has first and second gates made of pre-stressed concrete (PC). The second blind is secured in place with a cable. Winches are installed at each corner for level adjustment, and these winches are exposed to sea water during use.

본 발명의 목적은 이태리 특허 1331996호의 특징을 갖는 플랫폼을 이용하는데서 생기는 문제점들, 구체적으로는 구조, 사용된 재료, 플랫폼을 기반구조물에 고정하는 시스템, 그리고 이 시스템을 반잠수 부교로 사용하는 것과 관련된 문제를 해결하는데 있는데, 이런 플랫폼은 제작공장에서 제작되어 조립되는 것이다. 제작공장에서, 풍력터빈을 구조물에 설치한 다음 전체 구조물을 해양의 현장으로 운반한다. The object of the present invention relates to the problems arising from using a platform having the features of Italian Patent 1331996, specifically the structure, the materials used, the system of securing the platform to the infrastructure, and the use of the system as a semi-submersible pontoon. To solve the problem, these platforms are built and assembled at the manufacturing plant. In the manufacturing plant, wind turbines are installed on the structure and then the entire structure is transported to the offshore site.

본 발명의 플랫폼은 반잠수식 플랫폼으로서, PC로 만들어진 축대칭형 중앙 몸체와, 스틸로 만들어져 다수의 보강부재들을 이용해 몸체에 연결된 주변구조물을 구비한다. The platform of the present invention is a semi-submersible platform having an axisymmetric central body made of PC and a peripheral structure made of steel and connected to the body using a plurality of reinforcing members.

본 발명은 해양 풍력발전소에 사용되는 하이브리드 콘크리트-스틸 방식의 잠수식 플랫폼에 있어서:The present invention is a hybrid concrete-steel submersible platform used for offshore wind power plants:

PC(prestressed concrete)로 된 중앙 몸체(1)를 갖고;Has a central body 1 of prestressed concrete (PC);

스틸 스티프너(9,10,5)에 의해 중앙 몸체(1)를 둘러싸도록 스틸로 된 주변구조물(2)이 고정되는 플랫폼을 제공한다.A steel stiffener 9, 10, 5 provides a platform on which the steel periphery 2 is fixed to surround the central body 1.

본 발명의 플랫폼은 기반구조물(15)을 플랫폼에 고정하는 시스템이 다수의 직물 로프(6)를 포함하고, 이들 직물 로프들은 하단은 기반구조물(15)에 고정되며 윗쪽으로는 중앙 몸체(1)를 관통하고, 적어도 하나의 인장시스템(11)이 로프의 길이를 변화시켜 로프 자체의 프리로딩에 영향을 주며, 이런 인장시스템(11)이 중앙 몸체의 위에 위치할 수 있다. The platform of the present invention has a system for securing the infrastructure 15 to the platform comprising a plurality of fabric ropes 6, these fabric ropes having a lower end fixed to the infrastructure 15 and a central body 1 upwards. And at least one tensioning system 11 changes the length of the rope to affect the preloading of the rope itself, which tensioning system 11 can be located above the central body.

또, 이런 인장시스템(11)은 중앙 몸체(1) 안에나 해수면 위에 제공된다.This tensioning system 11 is also provided in the central body 1 or above the sea level.

또, 본 발명의 플랫폼은 직물 로프들(6)을 보호하는 보호기구(7,8)를 더 포함할 수도 있다. In addition, the platform of the present invention may further comprise a protective mechanism (7, 8) to protect the fabric ropes (6).

이런 기반구조물(15)이 PC(pre-stressed concrete)로 이루어지고 자유체적을 포함하여 공기로 압축될 수 있고 유동할 수 있으며, 기반구조물을 반잠수식 부교로 사용하여 그 위에 플랫폼을 건조한 다음, 기반구조물과 플랫폼을 동시에 건조장에서 해양 현장으로 운반할 수 있다. This infrastructure (15) is made of pre-stressed concrete (PC) and can be compressed and flowed into the air, including free volume, and the platform is built on it using a semi-submersible pontoon bridge, Infrastructure and platforms can be transported from the building to the offshore site at the same time.

한편, 수중에 있는 동안 설치할 때에도 인장상태의 상기 직물 로프(6)에 의해 일부 잠수된 상태에서 상부에 플랫폼을 고정한채 유지할 수 있다. On the other hand, even when installed while underwater, it is possible to keep the platform fixed to the upper part in the submerged state by the fabric rope 6 in tension.

본 발명은 또한, 이상 설명한 특징을 갖는 기반구조물에 관한 것이기도 하다. 이런 기반구조물도 수중에 있는 동안 설치할 때에도 인장상태의 상기 직물 로프(6)에 의해 일부 잠수된 상태에서 상부에 플랫폼을 고정한채 유지될 수 있다. The invention also relates to an infrastructure having the features described above. This infrastructure can also be held fixed on top of the platform in some submerged state by the textile rope 6 in tension even when installed while underwater.

이런 방식에 의하면, 구조물의 전체 중량을 포함해 기계적인 저항이 보장되고, 건조(제작)가 간단하고 경제적이며, 플랫폼 자체에 대해서도 용접과 같은 숙련된 기술이 불필요하다는 여러 장점이 있다. This approach has several advantages: mechanical resistance is guaranteed, including the total weight of the structure, drying (manufacturing) is simple and economical, and no skilled skills such as welding are required for the platform itself.

도 1은 본 발명의 시스템의 전체 개략도;
도 2는 기반구조물의 평면도와 단면도;
도 3은 반잠수 플랫폼의 평면도.1 is an overall schematic diagram of a system of the present invention;
2 is a plan view and a cross-sectional view of the infrastructure;
3 is a top view of the semi-submersible platform.

도면에서 알 수 있듯이, 본 발명의 플랫폼은 PC(prestressed concrete)로 된 중앙 몸체(1), 콘크리트 안에 매립된 스틸 인서트(9)에 의해 중앙몸체에 연결된 스틸로 된 주변구조물(2), 스틸로 된 타이로드(10) 및 보강링(5)을 포함한다. 중앙몸체는 풍력터빈을 지지하는 스틸 타워(12)를 받쳐준다.As can be seen in the figure, the platform of the present invention is made of a steel body (9) connected to the central body by a central body (1) of PC (prestressed concrete), a steel insert (9) embedded in concrete, Tie rod 10 and reinforcing ring 5. The central body supports the steel tower 12 supporting the wind turbine.

본 발명의 가장 큰 특징은, 플랫폼을 기반구조물(15)에 고정하는 시스템을 이루는 다수의 직물 로프들(6)이 아랫쪽으로는 기반구조물(15)에 고정되고 윗쪽으로는 중앙 몸체(1)를 관통하는데 있다. 중앙 몸체(1) 위에 있는 인장시스템(11)에 의해 로프(6)의 길이를 조정하면서 로프의 길이를 크게 줄일수도 있다. 이런 특징 때문에 기반구조물(15)을 수미터까지 상하로 안정시킬 수 있으며, 심지어는 다양한 해양조류의 영향에도 기반구조물을 안정시킬 수 있다. 플랫폼 밖으로 뻗는 로프(6)를 보호하기 위해 로프의 마찰을 최소화하거나 없애는 장치(7,8)도 있다. 한편, 특허 제1331996호는 무게추(기반구조물) 위에 플랫폼의 주변부를 묶어두는데 타이로드(예; 체인)를 사용하는 것을 특징으로 한다. 이런 체인은 안전장비를 갖춘 유압잭으로 플랫폼의 다리에 고정되기 때문에 조절하는데 한계가 있다.The greatest feature of the present invention is that a plurality of fabric ropes 6, which form a system for securing the platform to the infrastructure 15, is fixed to the infrastructure 15 downwards and the central body 1 upwards. It is through. The tensioning system 11 above the central body 1 can also reduce the length of the rope while adjusting the length of the rope 6. Because of this feature, the infrastructure 15 can be stabilized up and down several meters, and even under the influence of various marine algae. There are also devices 7, 8 which minimize or eliminate the friction of the rope to protect the rope 6 extending out of the platform. On the other hand, Patent No. 1331996 is characterized by using a tie rod (eg a chain) to tie the periphery of the platform on the weight (infrastructure). These chains are limited to adjustments because they are secured to the platform legs with hydraulic jacks fitted with safety equipment.

이 경우, 체인의 길이는 해저면의 깊이와 상태에 의해, 타이로드에 원하는 하중이 미리 걸리도록 정해져야 한다. 이를 위해서는 해저면을 정밀하게 측량해야 한다. 또, 설치작업과 유지보수를 위해, 스쿠버다이버도 필요하다.In this case, the length of the chain must be determined in advance by the depth and condition of the sea bottom so that the desired load is applied to the tie rod in advance. This requires precise surveying of the sea floor. A scuba diver is also required for installation and maintenance.

이런 문제는 중앙 몸체(1)의 위에 인장시스템(11)을 설치한 직물 로프(6)를 사용하는 본 발명에 의해 해결될 수 있다.This problem can be solved by the present invention using a fabric rope 6 with a tensioning system 11 installed on the central body 1.

또, 콘크리트로 만들어진 중앙몸체 둘레에 왕관 형태로 고정되고 PC로 만들어진 플랫폼에서 전체 중량의 80%는 주변부가 차지하고 20%는 중앙 몸체가 차지한다. 한편, 전체가 스틸로 만들어진 구조물은 비교적 경량이기는 해도 건설에 숙련된 기술과 장기간의 시간과 고비용이 필요하다. In addition, on a platform made of PC and crowned around a central body made of concrete, 80% of the total weight is taken up by the periphery and 20% by the central body. On the other hand, a structure made entirely of steel, although relatively lightweight, requires skill in construction, long time and high cost.

본 발명은 PC로 이루어진 구조물과 스틸로 이루어진 구조물을 결합하여 콘크리트나 스틸의 단점은 없애고 장점은 취한다. 특허 제1331996호의 해결책은 플랫폼을 현장으로 운반한 다음, 미리 해저면에 설치되어있던 기반구조물에 타이로드를 이용해 고정하는 것이었다. 반면에, 본 발명의 해결책은, 기반구조물을 공기로 압축될 수 있는 자유체적을 갖는 PC로 만들어 제작완료 후 반잠수식 부교로 사용할 수 있도록 함으로써, 기반구조물 위에 플랫폼을 건조한 다음 기반구조물과 플랫폼을 동시에 건설공장(건조장)에서 현장으로 운반하도록 하는 것이다. The present invention combines the structure made of PC and the structure made of steel eliminates the disadvantages of concrete or steel and takes advantage. The solution of patent 1331996 was to transport the platform to the site and then secure it using tie rods to the infrastructure that had been installed on the sea floor beforehand. On the other hand, the solution of the present invention, by making the infrastructure as a PC having a free volume that can be compressed by air to be used as a semi-submersible pontoon after the completion of construction, building the platform on the infrastructure and then build the infrastructure and platform At the same time, it is to be transported from the construction plant to the site.

또, 인장상태의 로프(6)를 사용해 반잠수형 기반구조물 위에 플랫폼을 세워 고정하기 때문에 시스템의 안정에 아주 긍정적이다.
It is also very positive for the stability of the system, since the platform is fixed on the semi-submersible infrastructure using the tensioned rope 6.

Claims (4)

하이브리드 콘크리트-스틸 방식의 잠수식 플랫폼에 있어서:
PC(prestressed concrete) 중앙 몸체(1)에 스틸 스티프너(9,10,5)로 스틸 주변구조물(2)이 고정되어 있는 것을 특징으로 하는 플랫폼.In the hybrid concrete-steel submersible platform:
A platform characterized in that the steel peripheral structure (2) is fixed to the PC (prestressed concrete) central body (1) with steel stiffeners (9, 10, 5). 제1항에 있어서, 기반구조물(15)을 플랫폼에 고정하는 시스템이 다수의 직물 케이블(6)을 포함하고, 이들 직물 케이블들은 하단은 기반구조물(15)에 고정되며 윗쪽으로는 중앙 몸체(1)를 관통하고, 적어도 하나의 인장시스템(11)이 케이블의 길이를 변화시켜 케이블 자체의 프리로딩에 영향을 주며, 이런 인장시스템이 중앙 몸체의 위에 위치하는 것을 특징으로 하는 플랫폼.2. The system of claim 1, wherein the system for securing the infrastructure 15 to the platform comprises a plurality of fabric cables 6, these fabric cables having a bottom secured to the infrastructure 15 and a central body 1 upwards. Platform, characterized in that at least one tensioning system (11) changes the length of the cable to influence the preloading of the cable itself, which tensioning system is located above the central body. 제1항 또는 제2항에 따른 플랫폼의 기반구조물(15)에 있어서:
PC로 만들어지고, 자유체적을 가져 공기로 압축될 수 있으며, 플랫폼 건조를 위한 반잠수식 부교로 사용될 수 있고, 플랫폼과 결합되어 건조장에서 현장으로 운반되는 것을 특징으로 하는 기반구조물. In the infrastructure 15 of the platform according to claim 1 or 2:
An infrastructure that is made of PC, has a free volume, can be compressed into air, can be used as a semi-submersible pontoon for platform building, and is coupled with a platform to be transported from the drying site to the site. 제3항에 있어서, 잠수된 상태에서 윗쪽에 플랫폼을 고정시키고, 긴장상태로 유지되는 케이블(6)에 의해 부분적으로 잠수되는 것을 특징으로 하는 기반구조물. Infrastructure according to claim 3, characterized in that the platform is fixed in the submerged state and partially submerged by a cable (6) which is kept in tension.
KR1020117018816A 2009-01-13 2010-01-11 Submersible platform with blocked thrust for offshore wind plants in open sea in concrete-steel hybrid solution KR20110118669A (en)

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