GB1512025A - Gravity platform and a method used in its construction - Google Patents

Gravity platform and a method used in its construction

Info

Publication number
GB1512025A
GB1512025A GB23808/75A GB2380875A GB1512025A GB 1512025 A GB1512025 A GB 1512025A GB 23808/75 A GB23808/75 A GB 23808/75A GB 2380875 A GB2380875 A GB 2380875A GB 1512025 A GB1512025 A GB 1512025A
Authority
GB
United Kingdom
Prior art keywords
base
portions
columns
deck
walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB23808/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bouygues SA
Original Assignee
Bouygues SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bouygues SA filed Critical Bouygues SA
Publication of GB1512025A publication Critical patent/GB1512025A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/025—Reinforced concrete structures
    • 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
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0069—Gravity structures
    • 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
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0073—Details of sea bottom engaging footing
    • E02B2017/0086—Large footings connecting several legs or serving as a reservoir for the storage of oil or gas

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Revetment (AREA)

Abstract

1512025 Offshore structures; gravity platforms BOUYGUES SA 2 June 1975 [25 June 1974] 23808/75 Heading E1H A gravity platform comprises a deck 2 which is supported by a plurality of vertical reinforced concrete columns P and a base I which includes two walls 5, 6 defining an annular space in which lower cylindrical portions 7 of the support columns P and further reinforced concrete columns A are located, the lower cylinder portions of the columns being integrally formed with the walls 5, 6. The platform is built by first constructing a lower portion of the base comprising a horizontal slab 3 externally of the portions 7 and extending between the portions 7 and the walls 5, 6, lower parts of the walls 5, 6 and cylinder portions 7 in a dry dock and then floating out this lower portion of the base for subsequent completion afloat. Alternatively sections of this lower base portion are built separately in a dry dock and then progressively connected together afloat. The base is completed afloat by further casting concrete and then frusto portions 9, 10 of the support columns P and frusto conical portion 12 and upper portion 11 of the further columns A are built onto the floating base 1. The further columns A are sealed at their upper ends and carry floatation collars 19. The deck 2 is built in a dry dock and has upper portions 18 of the support columns P subsequently fixed temporarily in passages 14. The base 1 is submerged and the deck 2 is located above it so that the support column portions 10, 18 can be permanently connected together. The deck 2 is moved relative to the column portions 18 by either submerging the base 1 further or raising the deck 2 and, when in the desired position, it is then permanently connected to the columns P.
GB23808/75A 1974-06-25 1975-06-02 Gravity platform and a method used in its construction Expired GB1512025A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7422067A FR2276426A1 (en) 1974-06-25 1974-06-25 PLATFORM FOR WORK AT SEA AND PROCESS FOR ITS CONSTRUCTION

Publications (1)

Publication Number Publication Date
GB1512025A true GB1512025A (en) 1978-05-24

Family

ID=9140489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23808/75A Expired GB1512025A (en) 1974-06-25 1975-06-02 Gravity platform and a method used in its construction

Country Status (4)

Country Link
FR (1) FR2276426A1 (en)
GB (1) GB1512025A (en)
IE (1) IE41551B1 (en)
NO (1) NO752128L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4746245A (en) * 1985-03-01 1988-05-24 Den Norske Stats Oljeselskap A.S. Offshore drilling and/or production system
CN104762942A (en) * 2014-01-06 2015-07-08 广东强光海洋工程有限公司 Soft soil foundation seabed fixed mounting construction method of water building ocean fixed platform

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2411956A1 (en) * 1977-12-19 1979-07-13 Doris Dev Richesse Sous Marine METHOD AND DEVICE FOR THE EXPLOITATION OF UNDERWATER DEPOSITS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4746245A (en) * 1985-03-01 1988-05-24 Den Norske Stats Oljeselskap A.S. Offshore drilling and/or production system
GB2201981A (en) * 1985-03-01 1988-09-14 Norske Stats Oljeselskap Offshore oil/gas production
GB2201981B (en) * 1985-03-01 1989-10-25 Norske Stats Oljeselskap Offshore drilling system
GB2172635B (en) * 1985-03-01 1989-10-25 Norske Stats Oljeselskap Offshore drilling system
CN104762942A (en) * 2014-01-06 2015-07-08 广东强光海洋工程有限公司 Soft soil foundation seabed fixed mounting construction method of water building ocean fixed platform
CN104762942B (en) * 2014-01-06 2016-05-25 广东强光海洋工程有限公司 Fixed platform soft soil foundation seabed, aquatic building ocean fixed installation construction method

Also Published As

Publication number Publication date
FR2276426A1 (en) 1976-01-23
FR2276426B1 (en) 1976-12-24
NO752128L (en) 1975-12-30
IE41551B1 (en) 1980-01-30
IE41551L (en) 1975-12-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee