Elastic transition section cylindrical foundation structure and construction method thereof

Abstract

The invention belongs to the technical field of foundation structures of ocean engineering and discloses an elastic transition section cylindrical foundation structure and a construction method thereof. The elastic transition section cylindrical foundation structure comprises a steel cylinder structure with a subdivision structure, the top of the steel cylinder structure is connected with a steeltop plate, a concrete plate is arranged on the steel top plate, beam plate systems are distributed on the concrete plate, concrete transition sections are located on a middle ring beam, steel tower cylinders are connected to the upper parts of the concrete transition sections in an embedded mode, and the junctions of the upper parts and the lower parts of the steel tower cylinders are in contact with the concrete transition sections and an inner ring beam through elastic buffer devices correspondingly. The construction method of the elastic transition section cylindrical foundation structure comprises the steps of prefabricating on land, shoreside hoisting, overwater towing, negative-pressure sinking, negative-pressure reinforcing and the like. The elastic transition section cylindrical foundation structure has the advantage of cylindrical foundations, and is wide in application range, convenient to transport and mount, capable of being recycled and high in bearing capacity, and the upper load can be transmitted onto the transition sections and the beam plate systems through the elastic buffer devices on the upper part and the lower part in the construction period and the operationperiod.

Description

technical field [0001] The invention relates to the technical field of foundation structures of ocean engineering, in particular to a cylindrical foundation structure and a construction method thereof. Background technique [0002] The transition section of the offshore wind turbine foundation is a force-transmitting structure, which is related to whether the foundation structure can convert the upper load into controllable stress and transmit it to the foundation, so as to maximize the bearing capacity of the foundation. As the water depth increases, the environmental loads on the foundation and the loads transmitted by the upper fan increase, so a larger transition section structure is required. It is necessary to propose a transition section structure with more effective load transfer and higher safety. Contents of the invention [0003] The present invention focuses on solving the technical problems of unreasonable load transfer and complicated construction and instal...

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Problems solved by technology

[0003] The present invention focuses on solving the technical problems of unreasonable load transfer and complicated construction and installation of the current offshore cylindrical foundation structure, and provides a cylindrical foundation structure with an elastic transition section and its construction method, which skillfully integrates the upper structure during the construction period and the operation period. Efficient transfer of loads to the straight transition and concrete roof to the lower barrel foundation

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