Composite infrastructure of jacket and negative pressure bucket and connection method of jacket and negative pressure bucket

Abstract

The invention provides a composite infrastructure of a jacket and a negative pressure bucket and a connection method of the jacket and the negative pressure bucket. According to a connecting structural form of the jacket and the negative pressure bucket, by reasonably arranging detailed structures such as upper rib plates and lower rib plates, the centralized load of the connecting section of a vertical pipe and the negative pressure bucket is apportioned, so that the jacket and the negative pressure bucket from a reasonable forcing acting system, and the advantages of the negative pressure bucket and the jacket are fully played; compared with a single negative pressure bucket infrastructure, the advantages of being able to adapt to deeper water, higher in anti-overturning ability and so on are achieved, the use amount of materials of a jacket structure can be effectively reduced, the cost is low, and the composite infrastructure is suitable for structures using the negative pressure bucket foundation; and through the whole foundation forcing system formed by the jacket and the negative pressure bucket, stress in the underwater environment is reasonable, materials are saved, economy and environmental protection are achieved, and the form of the composite infrastructure of the jacket + the negative pressure bucket is simple and convenient to process and high in construction efficiency.

Description

technical field [0001] The invention relates to a composite basic structure of a jacket and a negative pressure bucket and a connection method thereof. Background technique [0002] There are a large amount of soft clay distributed in my country's offshore waters. These soils have the characteristics of high water content, low permeability, high compressibility, and low strength, and the distribution layer is very thick. If pile foundations are used, the load level is relatively high. The size of the foundation often needs to be designed very large in order to penetrate the soft soil layer and enter the deeply buried bearing layer, which requires huge investment and long construction time. [0003] Conventional underwater foundation structures, such as gravity foundations, pile foundations, etc., present problems such as inapplicability and high cost when the water depth reaches about 40 meters. Contents of the invention [0004] An object of the present invention is to pr...

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Problems solved by technology

[0004] An object of the present invention is to provide a composite foundation structure of jacket and negative pressure barrel and its connection method, which can solve the problem that the size of the conventional underwater foundation structure often needs to be designed very large to penetrate the soft soil layer and enter the buried depth Problems of deep bearing layer, huge investment and long construction time

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