EP1336559A1 - Méthode pour baisser sous l'eau le flotteur d'un support flottant - Google Patents

Méthode pour baisser sous l'eau le flotteur d'un support flottant Download PDF

Info

Publication number
EP1336559A1
EP1336559A1 EP03001997A EP03001997A EP1336559A1 EP 1336559 A1 EP1336559 A1 EP 1336559A1 EP 03001997 A EP03001997 A EP 03001997A EP 03001997 A EP03001997 A EP 03001997A EP 1336559 A1 EP1336559 A1 EP 1336559A1
Authority
EP
European Patent Office
Prior art keywords
floating body
cables
rods
end position
floating
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.)
Granted
Application number
EP03001997A
Other languages
German (de)
English (en)
Other versions
EP1336559B1 (fr
Inventor
Hugo Dipl.-Ing. Mathis
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.)
Rund Stahl Bau & Co GmbH
Rund Stahl Bau GmbH
Original Assignee
Rund Stahl Bau & Co GmbH
Rund Stahl Bau GmbH
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 Rund Stahl Bau & Co GmbH, Rund Stahl Bau GmbH filed Critical Rund Stahl Bau & Co GmbH
Publication of EP1336559A1 publication Critical patent/EP1336559A1/fr
Application granted granted Critical
Publication of EP1336559B1 publication Critical patent/EP1336559B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs

Definitions

  • the invention relates to a method for lowering a float Floating foundations, which is a structure towering above the water surface carries, in its end position below the water surface and for fixing in its end position, with anchors being set in the subsurface, and the floating body of cables or rods connected to the anchors is held.
  • Floating foundations are known which are used, for example, in drilling rigs become.
  • Such floating foundations include buoyancy bodies that support the weight of the structure towering above the water surface.
  • the building owns a part below the water surface and one part that rises above the surface of the water Drilling rig covers.
  • the buoyancy of the buoyancy bodies of the floating foundation together with the buoyancy originating from the underwater part of the structure in total just the weight of the entire construction, d. H. the entire construction floats in the water, whereby the buoyancy body of the Floating foundations are located below the water surface.
  • the floating foundation is to maintain a place above the sea bed via cables or ropes or hawser with respect to horizontal displacements anchored relative to the subsurface. These cables or ropes run from Floating foundation at an angle to the vertical, for example of about 45 ° to the surface and are in it with conventional anchors attached.
  • Such anchors are designed differently depending on the surface and for example known in the form of rock anchors for rock floors and tie rods for gravel floors.
  • these are the ones that form the cable Strands open at the end of the cable (frayed).
  • the cable is in one inserted into the underground hole, with an injection tube to runs to the front end of the cable, and is through this injection tube Mortar pressed in, which causes it to be anchored in the subsurface.
  • Other embodiments too such anchors, which are also purely mechanical by means of folding mechanisms or the like are known.
  • a floating foundation with arranged below the water surface Floats, which are held by cables or hawser, which in the underground fixed anchors are attached, is known from US 5,964,550 A.
  • JP 06-255573 is also one with its base below the water surface lying and towering construction known, which is also held in place by cables or cables the cables or cables are attached to the anchors defined in the underground.
  • the object of the invention is to provide a method of the type mentioned at the outset, by means of which one initially floats on the water surface Floating foundation against the buoyancy of the floating body in its below the end position located on the water surface can be lowered, whereby the necessary diving work can be significantly reduced. According to the invention this is achieved by a method having the features of claim 1.
  • the floating body 1 has several buoyancy chambers 3, according to the embodiment shown are open at the bottom. Closed buoyancy chambers would also be conceivable and possible.
  • the floating body 1 has a circular shape Cover plate 4, along the outer edge of which is an annular Side wall 5 extends.
  • the individual buoyancy chambers 3 are radially extending Partitions 6 and an inner annular partition 7 delimited from each other. Other contours of the cover plate and / or shapes the buoyancy chambers 3 are quite conceivable and possible.
  • the in the Fig. The floating body shown is only shown symbolically and the shown Wall thicknesses are not to scale.
  • the structure 2 carried by the floating foundation can be, for example act as a wind tower of a wind turbine, of which in FIGS. only a lower part is shown.
  • anchors 12 could also be independent of Float 1 are attached, for example before the float 1 has been brought to its site.
  • Tube 14 attached to the float.
  • This can, for example, in the in 7 schematically shown way: Above a respective Passage opening 8 (which may be limited by a tube 15) 4 mounting brackets 16 attached to the cover plate.
  • the mounting brackets 16 have for attachment to the cover plate 4 one by means of screws 17 on the cover plate 4 screwed on flange plate 18.
  • On the flange plate 18 are after upstanding uprights 19 welded to the upper end of a flange 20 is fixed with a central recess.
  • On this flange disc 20 are the tubes 14 by means of one at the lower end of the respective tube welded base plate 21 and flange plate 20 and base plate 21 penetrating screw 22 attached. Are located between the stands 19 mounting holes 23.
  • Tubes 14 each have a working platform 24 attached to the tubes 14 (FIG. 6).
  • the cables (hawser or ropes) 13 or rods connected to the anchors 12 run through the tubes 14 and extend to above their upper ends.
  • the cables 13 or rods were used for this purpose before being attached of the tubes 14 threaded onto the floating body 1 in the tubes 14.
  • a pulling device 25 is also provided, which u. a. of a hydraulic device 26 can be actuated.
  • Such traction devices 25 are, for example under the names "pre-tensioning press” or “lifting hydraulics" known and commercially available.
  • the buoyancy of the float can be reduced by the air volume present in the buoyancy chambers 3 is reduced.
  • the water level in the buoyancy chambers is in the Fig. Schematically represented by line 28. Because the lowering of the float 1 takes place against its buoyancy, a certain stabilization of the Float reached when lowering.
  • the angle of inclination for example is in a range between 25 and 45 °.
  • the anchor 30 for this obliquely to put extending rods or cables 31 (or hawser) is in the lower Area of the building 2 formed an anhydrous area in the manner of a caisson.
  • the peripheral wall 32 of the structure 2 is at least in this lower one Area enclosed and watertight and also a waterproof or airtight false ceiling 33 is provided.
  • one or more drilling devices are used, which by means of appropriate drilling devices these pipes 35 drill holes in the ground 11 to set the anchor 30.
  • these pipes 35 drill holes in the ground 11 to set the anchor 30.
  • cables 31 or rods are connected through the Tubes 35 run and are fixed to the floating body 1.
  • the work on Attachment of the anchor 30 and rods or cables 31 do not have to Divers are carried out and the work to be carried out by divers can be kept to a minimum.
  • Fig. 8 From the detail shown in Fig. 8 is an advantageous embodiment of a passage opening 8 shown in the region of its lower end section.
  • the conically widening region 36 over a radius of curvature 37 to the overlying part of the passage opening 8 connects and in the mouth area of the conically widening area 36 a further radius of curvature 38 is provided which widens the opening is.
  • the passage openings 8 can also be used in another The position and number of the float must be available.
  • This imaginary triangle conveniently spans the central area of the float 1.
  • four, six or more Through openings for cables 13 or rods can be provided above of which a tube 14 is fixed, the number of openings 8 also depends on the size of the float.
  • six, eight or more such inclined to the vertical Poles can be provided.
  • 9 and 10 show parts of pipes that to form passage openings 8 through the floating body 1 in this be poured.
  • a mounting flange 42 is attached at the free end of the connecting shaft 40 in which boreholes are provided are, whereby a closure plate 43 can be screwed on.
  • connection opening is now made by removing the closure plate 43 opened so that the cable 13 extending through the passage opening 8 now is accessible from the buoyancy chamber 3.
  • the cable (the Hawser) 13 or the rod are clamped and above the clamping device be severed.
  • This area can now, for example, by means of of a foaming plastic, waterproof sealed.
  • the clamping work can thus be carried out in the dry, and also no salt water can enter the cut cable.
  • the work are facilitated and the risk of corrosion is reduced.
  • the passage openings 8 can also be located below the connection openings 41 be sealed. After completing the work through the connection opening 41 whose hatch can in turn be closed by the closure plate 43.
  • buoyancy body 1 also of several interconnected (for example over a linkage) partial bodies are formed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Foundations (AREA)
  • Earth Drilling (AREA)
  • Supports For Pipes And Cables (AREA)
  • Piles And Underground Anchors (AREA)
  • Bridges Or Land Bridges (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Cyclones (AREA)
EP03001997A 2002-02-14 2003-01-31 Méthode pour baisser sous l'eau le flotteur d'un support flottant Expired - Lifetime EP1336559B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT2312002 2002-02-14
AT2312002 2002-02-14
AT8322002 2002-05-31
AT8322002 2002-05-31

Publications (2)

Publication Number Publication Date
EP1336559A1 true EP1336559A1 (fr) 2003-08-20
EP1336559B1 EP1336559B1 (fr) 2004-08-04

Family

ID=27623500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03001997A Expired - Lifetime EP1336559B1 (fr) 2002-02-14 2003-01-31 Méthode pour baisser sous l'eau le flotteur d'un support flottant

Country Status (6)

Country Link
US (1) US6773207B2 (fr)
EP (1) EP1336559B1 (fr)
JP (1) JP4043380B2 (fr)
AT (1) ATE272525T1 (fr)
DE (1) DE50300043D1 (fr)
DK (1) DK1336559T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2324240A1 (fr) * 2008-08-14 2011-05-25 Dr. Tech. Olav Olsen AS Fondation pour générateur éolien en mer, et procédé de construction et de mise en place de cette fondation
CN101748748B (zh) * 2010-01-21 2011-09-14 道达(上海)风电投资有限公司 一种内置浮筒的筒型基础气浮拖航方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBA20040027U1 (it) * 2004-10-06 2005-01-06 Enertec Ag (metodo di) realizzazione di piattaforma sommergibile a spinta bloccata da utilizzarsi quale supporto per l'installazione di aerogeneratore , di elettrolizzatore per l'elettrolisi dell'acqua e di altri impianti e/o macchinari , combinata con attivita
EP2121424A1 (fr) * 2006-12-22 2009-11-25 Vestas Wind Systems A/S Système d'amarrage pour stabiliser un navire, navire, procédé pour stabiliser un navire et utilisation d'un système d'amarrage
GB201011251D0 (en) * 2010-07-05 2010-08-18 Fraenkel Anne Surface breaking re-usable submergeable template for installing one or more submerged columns/piles
CN102704502A (zh) * 2012-05-30 2012-10-03 天津大学 一种海上潜式箱型基础结构及其施工方法
CN102704503A (zh) * 2012-05-30 2012-10-03 天津大学 海上潜式箱型基础结构及其施工方法
CN102677693B (zh) * 2012-05-30 2014-06-25 天津大学 一种海上潜式基础结构的施工方法
CN102704506B (zh) * 2012-05-30 2014-07-16 天津大学 海上潜式基础结构的施工方法
AU2013375773B2 (en) * 2013-01-22 2016-02-04 Zhirong Wu Unitary barrel of steel plate and concrete composite structure, unitary group barrel, and offshore platform
CN103195110B (zh) * 2013-03-29 2015-02-11 天津大学 一种稳定筒型基础下沉负压的试验装置
US10494830B2 (en) * 2014-10-31 2019-12-03 Soletanche Freyssinet Method for manufacturing concrete construction blocks for a wind-turbine tower and associated system
CN104652499A (zh) * 2015-02-06 2015-05-27 天津大学 一种模拟桶形基础负压沉贯过程的实验装置及实验方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06255573A (ja) 1993-03-09 1994-09-13 Kajima Corp 水上構築物の繋留方法
US5964550A (en) 1996-05-31 1999-10-12 Seahorse Equipment Corporation Minimal production platform for small deep water reserves
US6022174A (en) * 1995-06-07 2000-02-08 Aker Engineering As Method for installing a tension leg platform
EP1288122A2 (fr) * 2001-08-30 2003-03-05 Rund-Stahl-Bau Gesellschaft M.B.H. Support flottant pour une construction s'élevant au dessus de la surface de l'eau
EP2015395A1 (fr) 2007-07-10 2009-01-14 Kojima Press Industry Co., Ltd. Appareil d'antenne automobile et procédé de connexion de l'élément d'antenne à un câble

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086368A (en) * 1958-10-08 1963-04-23 Popper Otto Chains and marine apparatus moored or anchored by chains to the sea bed
US4473323A (en) * 1983-04-14 1984-09-25 Exxon Production Research Co. Buoyant arm for maintaining tension on a drilling riser
US4604001A (en) * 1984-03-08 1986-08-05 Global Marine Inc. Jackdown tension leg platform
US4657439A (en) * 1985-12-18 1987-04-14 Shell Offshore Inc. Buoyant member riser tensioner method and apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06255573A (ja) 1993-03-09 1994-09-13 Kajima Corp 水上構築物の繋留方法
US6022174A (en) * 1995-06-07 2000-02-08 Aker Engineering As Method for installing a tension leg platform
US5964550A (en) 1996-05-31 1999-10-12 Seahorse Equipment Corporation Minimal production platform for small deep water reserves
EP1288122A2 (fr) * 2001-08-30 2003-03-05 Rund-Stahl-Bau Gesellschaft M.B.H. Support flottant pour une construction s'élevant au dessus de la surface de l'eau
EP2015395A1 (fr) 2007-07-10 2009-01-14 Kojima Press Industry Co., Ltd. Appareil d'antenne automobile et procédé de connexion de l'élément d'antenne à un câble

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2324240A1 (fr) * 2008-08-14 2011-05-25 Dr. Tech. Olav Olsen AS Fondation pour générateur éolien en mer, et procédé de construction et de mise en place de cette fondation
EP2324240A4 (fr) * 2008-08-14 2012-04-25 Tech Olav Olsen As Dr Fondation pour générateur éolien en mer, et procédé de construction et de mise en place de cette fondation
CN101748748B (zh) * 2010-01-21 2011-09-14 道达(上海)风电投资有限公司 一种内置浮筒的筒型基础气浮拖航方法

Also Published As

Publication number Publication date
US6773207B2 (en) 2004-08-10
DE50300043D1 (de) 2004-09-09
EP1336559B1 (fr) 2004-08-04
JP2003268791A (ja) 2003-09-25
DK1336559T3 (da) 2004-11-08
US20030152429A1 (en) 2003-08-14
JP4043380B2 (ja) 2008-02-06
ATE272525T1 (de) 2004-08-15

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