CN101565929A - Method and special device for connecting trestle between marine platforms - Google Patents
Method and special device for connecting trestle between marine platforms Download PDFInfo
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- CN101565929A CN101565929A CNA2009100856088A CN200910085608A CN101565929A CN 101565929 A CN101565929 A CN 101565929A CN A2009100856088 A CNA2009100856088 A CN A2009100856088A CN 200910085608 A CN200910085608 A CN 200910085608A CN 101565929 A CN101565929 A CN 101565929A
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Abstract
The invention discloses a method and a special device for connecting a trestle between marine platforms. The method is characterized in that two marine platforms are connected with each other by a trestle connecting device; the trestle connecting device is only supported on an upper deck structure and a lower deck structure of a platform; the trestle structure is not contacted with another platform; the trestle connecting device comprises a bridge and a supporting beam; and the supporting beam and the bridge surface form a triangular structure or a trapeziform structure. The method can carry out the trestle connection operation without stopping the production of the original platform, reduces the reconstruction workload for the original platform, reduces the risk caused by the reconstruction of the original platform, solves the important problem that the structure of the original platform is difficult to be reinforced and arranged and improves the economic benefits of oilfields.
Description
Utility model patent has been applied in this invention simultaneously
Technical field
The present invention relates to trestle method of attachment and special-purpose trestle linkage thereof between a kind of offshore platform.
Background technology
Often need use trestle to connect two or more production platforms in the offshore oil development process, with conveying effects such as the personnel of playing, oil gas water, electric power.It also needs to resist abominable marine environment except having these conveying functions, and can bring into play to long-term safety its effect at sea.Considered at the beginning of the design of two adjacent platforms that the trestle device uses, but under many circumstances, because following cause not have to consider, set up its technical difficulty of trestle at this moment more greatly and invest highly, they comprise: each platform construction is different with the set-up time; Or the podium design initial stage do not consider to use trestle to connect, and the later stage oil field development need be set up platform and be installed trestle additional; Or old platform structure weak strength and reasons such as trestle can't be installed.Therefore, need a kind of platform that do not carry out to transform operation, obtain two platforms again and be connected, the trestle linkage that each platform feature is got a promotion.
Summary of the invention
Above-mentioned old platform structure is difficult to be strengthened and difficult Layout Problem in order to solve, and the invention provides a kind of retrofit work amount that has reduced old platform, trestle method of attachment between the offshore platform and special-purpose trestle linkage thereof.
Trestle linkage between the offshore platform provided by the invention, it comprises bridge and brace summer, described brace summer and bridge floor form triangle or trapezium structure.
Described brace summer is for can be one or more.
Described brace summer and/or described bridge form space truss formula structure.
The bridge length of described trestle linkage can be 30 meters～60 meters.This apparatus structure is simple in form, and conventional material is easy to process, and is with low cost.
Trestle method of attachment between the offshore platform provided by the present invention is between two offshore platforms, connects with above-mentioned trestle linkage; Described trestle linkage only is supported on the last lower deck structure of a platform, and trestle structure itself not with another contact with platform.
Described trestle linkage and a platform are that cantilever beam structures is connected or oblique roller connects.
The cantilever beam structures form connects trestle and is supported by new platform fully, and the trestle linkage is formed space truss formula structure by steel pipe or shaped steel, by the upper deck and the deck of sub-cellar together support of new platform; The trestle linkage is overlooked with side-looking and is shown trapezoidal shape, and the bridge section of trestle linkage shows rectangle or triangle; The old and new's platform distance is 30 meters～60 meters; The bridge end face of trestle linkage is personnel's passage of walking, and lays oil gas water pipeline and cable between truss; The trestle structure does not contact with platform A, reserves about 1 meter gap, relatively moves under the marine environment effect so that two platforms to be provided, and does not restrict.The cantilever beam structures ways of connecting of a described trestle linkage and a platform is for being welded to connect.
The oblique roller form connects trestle and is also supported by new platform fully, trestle is formed space truss formula structure by steel pipe or shaped steel, trestle is connected on the deck of sub-cellar of new platform, trestle is hung flat by two braces, brace is connected on the upper deck of new platform, and the brace material is wirerope or steel pipe; Trestle is overlooked with side-looking and is shown oblong-shaped, and the bridge section of trestle linkage shows rectangle or triangle; The old and new's platform distance is 30 meters～60 meters; Be personnel's passage of walking in the trestle trussed construction, and lay oil gas water pipeline and cable; The trestle structure does not contact with platform A, reserves about 1 meter gap, relatively moves under the marine environment effect so that two platforms to be provided, and does not restrict.Described trestle linkage is that welding is connected jointly with pin or bolt with the oblique roller ways of connecting of a platform.
Described trestle linkage is installed on the above 10 meters positions of the water surface.Trestle should be arranged on the water surface, bounces to avoid billow.Safeties such as the trestle structural strength should assurance personnel walking, the conveying of oil gas power and water power; Application life should be identical with the platform life-span.
The use trestle connects, and means that platform has more than two, if known two platforms of design initial exist, trestle and two platforms can be done the disjunctor design, unified consideration, its design can be accomplished the reasonability on structure and the layout, all use the trestle of simple beam structure form at present on the ocean engineering.When having designed, a platform A (hereinafter referred to as old platform) wherein appropriately can't change again; Or platform has been in the construction erection stage, will influence the duration in case change, and economy is declined to a great extent; Or because of difficulties such as platform structure intensity and layouts, and the trestle that can't implement the simple beam structure form connects.We need again to connect carrying out trestle between the platform, be necessary to change the thinking of simple beam structure form this moment, the trestle form is changed into cantilever beam structures form or oblique roller form, the trestle stress point or the strong point are born by platform B (hereinafter referred to as new platform) fully, and trestle not with old contact with platform, thereby finished the function of use of trestle.This is an operating principle of the present invention.
The present invention has the following advantages owing to adopt above technical scheme:
Trestle linkage form of structure is changed to semi girder or cable-stayed type by simply supported beam, the stressed operating principle of this trestle is cantilever beam structures form or oblique roller form, the trestle stress point is only acted on the platform, thereby changed the thinking of two platform together support of trestle needs, improved the stressed and arrangement states of another platform.
This method can not carried out trestle connection operation under the end-of-life state at old platform, reduced the retrofit work amount of old platform, more reduced old platform house of correction and brought risk, it has solved, and old platform structure is difficult to be strengthened and difficult significant problem of arranging, has improved the economic benefit in oil field.
The present invention makes to connect between the old and new's platform to become convenient because of having adopted said method and device, reduced operating risk, and form is simple, easy to process, with low cost.Therefore, this method can be widely used among the marine petroleum development as the effective technology means that connect between a kind of two platforms, is to reduce platform to transform risk and the effective technology means that improve the oil field development benefit.
Description of drawings
Fig. 1 is that beam type of the present invention connects trestle device schematic diagram (A is platform A among the figure, and B is platform B, and C is the water surface)
Fig. 2 is the schematic top plan view (A is platform A among the figure, and B is platform B) of Fig. 1
Fig. 3 is that cable-stayed type of the present invention connects trestle device schematic diagram (A is platform A among the figure, and B is platform B, and C is the water surface)
Fig. 4 is the schematic top plan view (A is platform A among the figure, and B is platform B) of Fig. 3
The specific embodiment
Method described in the following embodiment if no special instructions, is conventional method.
Embodiment one:
Trestle linkage of the present invention and the method schematic diagram that is connected platform with it suppose that platform A exists as shown in Figure 1 and Figure 2, at first determine the orientation of platform A, determine that again it is appropriate that platform B and platform A connection orientation, distance are 30 meters～60 meters.It is made up of the trestle linkage bridge 1 and brace summer 2, and brace summer is many, forms space truss formula structure, forms trapezium structure with bridge floor, and it is stressed to be convenient to cantilever beam structures.The bridge length of trestle linkage can be 30 meters～60 meters, and its length distance concrete and platform B and platform A is mated.
The upper deck and the deck of sub-cellar that the trestle linkage strong point are decided to be platform B; The trestle linkage is overlooked with side-looking and is shown trapezoidal shape, and an end of broad is fixed on the platform B, forms cantilever beam structures with platform B and is connected; Trestle linkage bottom should be higher than the water surface more than 10 meters, avoids wave action and influences production operation; The bridge end face of trestle linkage is personnel's passage of walking, lay oil gas water pipeline and cable between truss, pipeline should use when being connected with platform A with cable and flexibly connect, and rocks the constraint that is produced relatively to discharge two platforms, also reserves about 1 meter gap between trestle linkage and platform A; The trestle linkage is that steel pipe or shaped steel are formed space truss formula structure, and its intensity and life-span should be satisfied offshore oilfield and be produced needs, and material is a conventional material; The trestle linkage is independent processing and manufacturing, behind the marine installation in position of platform A and platform B, with crane barge trestle is installed again, and being welded to connect of enforcement and platform B, and connecting line and cable are again laid personnel channel and waited work afterwards.
Above-mentioned platform A can be old platform, need not to transform, just it is connected with new platform (as platform B), can not carry out trestle connection operation under the end-of-life state at old platform, reduced the retrofit work amount of old platform, more reduced old platform house of correction and brought risk, it has solved, and old platform structure is difficult to be strengthened and difficult significant problem of arranging, has improved the economic benefit in oil field.
The no daily maintenance requirement of this device.
Embodiment two:
Trestle linkage of the present invention and the method schematic diagram that is connected platform with it suppose that platform A exists as shown in Figure 3, Figure 4, at first determine the orientation of platform A, determine that again it is appropriate that platform B and platform A connection orientation, distance are 30 meters～60 meters.It is made up of the trestle linkage bridge 1 and brace summer 2, and brace summer and bridge floor form three-legged structure.Brace summer is for can be 2.Brace summer and bridge form space truss formula structure.The bridge length of trestle linkage can be 30 meters～60 meters, and its length distance concrete and platform B and platform A is mated.
The trestle linkage strong point is decided to be upper deck and the deck of sub-cellar of platform B, and deck of sub-cellar is an overlapped points, and the upper deck is brace (brace summer) fixed point; The bridge of trestle linkage is overlooked with side-looking and is shown oblong-shaped; Trestle bottom should be higher than the water surface more than 10 meters, avoids wave action and influences production operation; The bridge of trestle linkage provides support for walk passage, oil gas water pipeline and cable of personnel; Pipeline should use when being connected with platform A with cable and flexibly connect, and rocks the restraint forces that is produced relatively to discharge two platforms, also should reserve about 1 meter gap between trestle linkage and platform A; The trestle linkage is that steel pipe or shaped steel are formed space truss formula structure, and its intensity and life-span should be satisfied offshore oilfield and be produced needs, and material is a conventional material; Brace length should determine that material is the high-quality steel according to two positions of platform and trestle levelness; Trestle and brace (brace summer) are independent processing and manufacturing, behind the marine installation in position of platform A and platform B, use the crane barge brace earlier, and trestle is installed again, connect trestle and brace at last; Trestle and platform B are for being welded to connect, and brace is that pin or bolt are connected with the bridge of platform B and trestle linkage, so that brace (brace summer) only is subjected to axial tension; Then connecting line and cable are again laid personnel channel and are waited work.
Above-mentioned platform A can be old platform, need not to transform, just it is connected with new platform (as platform B), can not carry out trestle connection operation under the end-of-life state at old platform, reduced the retrofit work amount of old platform, more reduced old platform house of correction and brought risk, it has solved, and old platform structure is difficult to be strengthened and difficult significant problem of arranging, has improved the economic benefit in oil field.
The no daily maintenance requirement of this device.
Claims (10)
1, the trestle linkage between a kind of offshore platform is characterized in that: it comprises bridge (1) and brace summer (2), and described brace summer and bridge floor form triangle or trapezium structure.
2, trestle linkage according to claim 1, it is characterized in that: described brace summer is at least one.
3, trestle linkage according to claim 1 is characterized in that: described brace summer and/or described bridge form space truss formula structure.
4, trestle linkage according to claim 1 is characterized in that: long 30 meters～60 meters of the bridge of described trestle linkage.
5, the trestle method of attachment between a kind of offshore platform is between two offshore platforms, connects with any described trestle linkage among the claim 1-5; Described trestle linkage only is supported on the last lower deck structure of a platform, and trestle structure itself not with another contact with platform.
6, method according to claim 5 is characterized in that: described trestle linkage and a platform are that cantilever beam structures is connected or oblique roller connects.
7, method according to claim 6 is characterized in that: the cantilever beam structures ways of connecting of a described trestle linkage and a platform is for being welded to connect.
8, method according to claim 6 is characterized in that: described trestle linkage is connected for welding and pin are common with the oblique roller ways of connecting of a platform or welding is connected jointly with bolt.
9, according to any described method among the claim 5-8, it is characterized in that: the gap that keeps at least 1 meter distance between described trestle linkage and the discontiguous platform.
10, according to any described method in the claim 9, it is characterized in that: described trestle linkage is installed on the above 10 meters positions of the water surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100856088A CN101565929A (en) | 2009-05-26 | 2009-05-26 | Method and special device for connecting trestle between marine platforms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100856088A CN101565929A (en) | 2009-05-26 | 2009-05-26 | Method and special device for connecting trestle between marine platforms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101565929A true CN101565929A (en) | 2009-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100856088A Pending CN101565929A (en) | 2009-05-26 | 2009-05-26 | Method and special device for connecting trestle between marine platforms |
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| CN (1) | CN101565929A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510246A (en) * | 2019-01-07 | 2019-03-22 | 南京南瑞继保电气有限公司 | A kind of offshore wind farm direct current grid-connected system |
| CN114991106A (en) * | 2022-07-01 | 2022-09-02 | 湖北海洋工程装备研究院有限公司 | Platform floats outward |
-
2009
- 2009-05-26 CN CNA2009100856088A patent/CN101565929A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510246A (en) * | 2019-01-07 | 2019-03-22 | 南京南瑞继保电气有限公司 | A kind of offshore wind farm direct current grid-connected system |
| CN114991106A (en) * | 2022-07-01 | 2022-09-02 | 湖北海洋工程装备研究院有限公司 | Platform floats outward |
| CN114991106B (en) * | 2022-07-01 | 2024-01-16 | 湖北海洋工程装备研究院有限公司 | Outward floating platform |
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| PB01 | Publication | ||
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Open date: 20091028 |