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Assembling method for large truss type pile leg structure

An assembly method and truss-type technology, which can be used in underwater structures, infrastructure engineering, sheet pile walls, etc., can solve the problems of high cost, large manpower and material resources, reduce welding deformation, improve work efficiency, and shorten construction. effect of cycles

Active Publication Date: 2007-06-06
DALIAN SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to ensure the construction accuracy, a lot of manpower and material resources need to be invested, and the cost is relatively high.

Method used

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  • Assembling method for large truss type pile leg structure
  • Assembling method for large truss type pile leg structure
  • Assembling method for large truss type pile leg structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First of all, same as the existing technology, for structural pipe fittings such as main side pipes, support pipes, inner horizontal pipes, etc. And realize the operation of extending the main side pipe.

[0023] Thereafter, as shown in Figure 1, under the horizontal construction mode, the monolithic structure of each leg segment is assembled based on the main side tube at one end, and the length of each monolithic structure is 15-25 meters. It is consistent with the length of the pile leg segment, and the optimal way is about 20 meters. Wherein, the assembling process of the monolithic structure is as follows: first, the horizontal pipe 2 is assembled with the main side pipe 1 as a reference, and then the lateral support pipe 3 is fixed between the horizontal pipe 2 and the main side pipe 1 . Mark 4 in Fig. 1 indicates two support pipes, which are installed as loose parts in the segmented assembly stage to realize the final assembly. In addition, the open ends of the...

Embodiment 2

[0027] Including the process of lengthening of the main side pipe—single-piece assembly of leg segments—segmental assembly of legs—general assembly of leg segments—closing of leg segments / total segments, but in the final stage , That is to complete the segmental assembly of the legs and realize the closing stage of the total segment, the legs can be directly segmented from bottom to top in the vertical state.

Embodiment 3

[0029] First of all, for the main side pipe, support pipe, inner horizontal pipe and other structural blanking, the welding of the main side pipe and support pipe and other pipe fittings and the lengthening of the main side pipe are completed. Afterwards, in the horizontal construction method, the single-piece structure of each leg segment is assembled based on the main side tube at one end.

[0030] Afterwards, as shown in Figure 2, in the horizontal construction mode, three identical single-piece structures are assembled into regular triangular truss-type leg segments by using tire frame devices. The assembly process is preferably as follows: first fix a monolithic structure 5 in a horizontal position, then assemble the monolithic structure 6 at the lower end of the main side tube, and then assemble another monolithic structure 7, and finally fix the pile legs in a horizontal position. Diagonal support pipe 8 between three horizontal pipes in section.

[0031] In the last ste...

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Abstract

The present invention discloses an assembly method of large trussed pile leg structure. Said method includes the following steps: first step, utilizing horizontal construction mode and using main side pipe positioned in one end as reference to assemble single-sheet structure of every pile leg part, the length of every described single-sheet structure is 15-25 meters; second steps, utilizing mould frame to make three identical single-sheet structures be formed into a regular trilateral trussed pile leg part; and third step, assembling all the pile leg parts together so as to obtain the invented large trussed pile leg structure.

Description

technical field [0001] The invention relates to an assembly method of a triangular pile leg of a drilling platform, and more specifically relates to an improvement in the assembly process of a triangular pile leg structure of a large self-elevating drilling platform. Background technique [0002] At present, jack-up drilling platforms account for about 70% of the mobile platforms used in countries around the world, and are the main type of oil drilling platforms. The large-scale truss-type pile legs are the key structure of the jack-up drilling platform. The three corners of the leg structure are provided with main side tubes with racks, which are connected by structural tubes to form a triangular truss. Due to the high strength of the material of the pile leg structure, the complex joint form, the difficulty of welding, the very strict size requirements, and the high precision requirements for the cooperation between the pile leg and the rack box, the high precision requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/28E02B17/00
Inventor 孙洪国姜福茂
Owner DALIAN SHIPBUILDING IND
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