Multi-cylinder combination infrastructure with supporting structure and construction method of multi-cylinder combination infrastructure

Abstract

The invention belongs to the technical field of infrastructures of marine engineering, and discloses a multi-cylinder combination infrastructure with a supporting structure and a construction method of the multi-cylinder combination infrastructure. The multi-cylinder combination infrastructure comprises a plurality of steel cylinders which are annularly arranged and mutually welded, the upper parts of the multiple steel cylinders are connected with a steel top plate, a concrete plate is arranged on the steel top plate, the top face of the concrete plate is provided with an outer ring beam, a middle ring beam, an inner ring beam, a concrete main beam, a first concrete secondary beam and a second concrete secondary beam, the upper part of the middle ring beam is connected with a concrete transition section, and the supporting structure is arranged in the concrete transition section. The construction method of the multi-cylinder combination infrastructure comprises the steps such as landprefabrication, shore hoisting, water towage, negative pressure sinking and negative pressure reinforcement. The multi-cylinder combination infrastructure has the advantages of a gravity-type foundation and a cylinder-type foundation, is wide in application range, convenient to transport and mount, recyclable, and high in carrying capacity, can serve as a top-bearing-type structure, can also convert an upper fan load into structure-controlled pulling and pressing stress, and can also serve as a gravity-type structure to resist the upper load through the own gravity.

Description

technical field [0001] The invention relates to the technical field of foundation structure of marine engineering, in particular to a multi-tube composite foundation structure and a construction method thereof. Background technique [0002] The cylindrical foundation is also called suction anchor and air cushion structure, which is a new type of structure. Compared with the traditional pile foundation, it has the advantages of saving the cost of construction and installation, convenient transportation and installation, reusable, short construction time of the cylindrical foundation, simple survey and research required for construction, etc., so it has a wide application prospect. Barrel foundations can be divided into single barrel foundations, multi-barrel foundations and composite barrel foundations. The design of the multi-tube foundation combines the advantages of low cost and strong bearing capacity of the gravity structure with the above-mentioned advantages of the cy...

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Problems solved by technology

[0003] The present invention focuses on solving the technical problems such as stress concentration, high cost, and unreasonable force transmission system of the current offshore wind power foundation structure, and provides a multi-tube composite foundation structure with a support structure and its construction method, aiming at the original multi-tube foundation The optimized design of the structure makes the wall thickness thinner, the self-weight lighter, the force transmission system more reasonable, the stress concentration phenomenon less, the installation and transportation are convenient, the application range is wide, and the cost is lower

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