Multi-cylinder combined foundation structure and construction method thereof

Abstract

The invention belongs to the technical field of foundation structures of oceanographic engineering, and discloses a multi-cylinder combined foundation structure and a construction method thereof. Themulti-cylinder combined foundation structure comprises multiple steel cylinder foundations, wherein the central points of the steel cylinder foundations are connected to form a regular polygon; a steel top plate is connected to the upper portions of the multiple steel cylinder foundations, a concrete plate is arranged on the steel top plate, and a beam plate system is distributed on the concrete plate; and a concrete transition section is located on a central ring beam, a steel tower cylinder is connected to the upper portion of the concrete transition section in an embedded manner, and the upper portion and the lower joint of the steel tower cylinder make contact with the concrete transition section and inner ring beams through elastic buffer devices. The construction method of the multi-cylinder combined foundation structure comprises the steps of land fabrication, shore-side hoisting, waterborne towing, negative pressure sinking, negative pressure reinforcing and the like. The multi-cylinder combined foundation structure has the advantage of the cylinder foundations, and is wide in application range, convenient to transport and install, recyclable and high in bearing force; andduring construction and operation, an upper load can be transferred to the transition section or the beam plate system through the elastic buffer devices on the upper portion and the lower portion.

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] At present, in the field of offshore wind power, the forms of wind turbine foundations mainly include gravity foundations, jacket foundations, barrel foundations, pile foundations, floating foundations, etc. [0003] As a new type of foundation for offshore wind power generation, the large-scale cylindrical foundation can be constructed on land and quickly installed at sea. It has strong anti-overturning ability, is suitable for various foundation geology, and can make full use of the advantages of abundant offshore wind energy resources. . As the force transmission structure of this new type of offshore wind power generation foundation, the transition section is related to whether the foundation structure can safely transfer the upper l...

AI Technical Summary

Problems solved by technology

[0004] The present invention focuses on solving the technical problems of unreasonable load transfer and complex construction and installation of offshore foundation structures. It provides a multi-tube composite foundation structure and its construction method, which skillfully transfers the loads of the superstructure during the construction period and the operation period to the Straight transitions and concrete roof slabs, which then transfer to the steel cylinder foundation below

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