Split vertical non-slideway construction design method for shallow water jacket

By dividing the jacket into upper and lower parts and constructing it vertically in the non-slipway area, and using SPMT for ship transport, the problem of site and slipway resource occupation in the traditional construction method is solved, and the effects of short construction period, low cost and simplified installation are achieved.

CN120930290AActive Publication Date: 2025-11-11ZHONGHAI FULU HEAVY IND CO LTD
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Patent Information

Application Number
CN202511464639.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-14
Publication Date
2025-11-11
Estimated Expiration
2045-10-14

AI Technical Summary

Technical Problem

Traditional jacket construction methods require a large amount of site space and slipway resources, have a long construction period, high costs, and complex offshore righting operations, which increases project costs.

Method used

The shallow water jacket structure is constructed using a split vertical non-slipway construction method, dividing the jacket structure into upper and lower parts. The upper and lower parts are constructed simultaneously in the non-slipway area, and the final assembly is completed using a crawler crane. The jacket is then transported to the ship via SPMT, simplifying the offshore installation process.

Benefits of technology

It shortened the final assembly period, reduced the demand for auxiliary construction materials, lowered project costs, simplified offshore installation procedures, and increased project capacity.

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Abstract

The invention provides a shallow water jacket split vertical non-slideway construction design method. The method comprises the following steps: generating shallow water jacket split vertical non-slideway construction scheme data; designing a segmented final assembly cushion pier of the upper jacket and an integral shipment transportation cushion pier of the jacket, and outputting cushion pier design data; designing a foundation transformation scheme of the shallow water jacket split vertical non-slideway construction area, and generating foundation transformation scheme data; designing the construction scheme of the lower jacket, the scheme of constructing the upper jacket based on the lower jacket and the hoisting and closing scheme of the upper jacket and the lower jacket, and generating lower jacket construction scheme data, upper jacket construction scheme data and hoisting and closing scheme data. The jacket is divided into the upper jacket and the lower jacket, vertical construction is completed at the same time in a non-slideway area, then folding and final assembly are conducted, the construction period is short, the ship loading speed is high, a slideway is not needed, and occupied space is small; vertical installation can be directly carried out on the sea, and offshore righting operation is not needed.
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