Combined multi-cylinder jacket foundation structure and construction method thereof

Abstract

The invention belongs to the technical field of foundation structures of marine engineering, and discloses a combined multi-cylinder jacket foundation structure and a construction method thereof. A steel top plate is connected to the upper parts of multiple steel cylinders, a steel groove is connected between every two adjacent steel cylinders on the lower part of the steel top plate, a concrete slab is arranged on the steel top plate, and an outer ring beam, a middle ring beam, an inner ring beam, a concrete main beam and a concrete secondary beam are arranged on the top surface of the concrete slab; a jacket structure for installing upper wind power equipment is connected to the upper parts of the middle ring beam and the inner ring beam, and the jacket structure includes stand columns,support rods and diagonal rods; and the construction method comprises the steps of land prefabrication, shore debugging, water towing, negative-pressure sinking, negative-pressure reinforcement and the like. The combined multi-cylinder jacket foundation structure has the advantages of both a cylinder-type foundation and a jacket foundation, is wide in application range and convenient to transportand install, can be recycled and is high in bearing capacity, and can transfer load of an upper fan to the concrete top plate through the jacket structure, the load can be converted into controlled tension-compression stress, and the stress is transmitted to of the multiple steel cylinders on the lower part.

Description

Technical field [0001] The invention relates to the technical field of a basic structure of ocean engineering, in particular to a multi-tube combined basic structure and a construction method thereof. Background technique [0002] At present, in the field of offshore wind power generation, the main forms of wind turbine foundation are gravity foundation, jacket foundation, cylindrical foundation, pile foundation, floating foundation, etc. [0003] The gravity foundation as a whole relies on the weight of the structure and the weight of the filler and ballast on it to resist external loads and maintain the stability of the structure. The construction principle is simple, the cost of filler and ballast materials is low, and the construction cost for shallow foundations is also lower; but the foundation The self-weight and geometric size are large, the foundation occupies a wide range of the seabed, and the geological conditions are relatively high. Therefore, the gravity foundation h...

AI Technical Summary

Problems solved by technology

However, as the water depth increases, the wind, wave, and current loads become larger, and the diameter of the cylindrical foundation required for large bending moment loads is larger, and large-scale equipment is required for transportation and installation.

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