Offshore wind turbine foundation structure and construction method thereof

Abstract

The invention relates to an offshore wind turbine foundation structure. The offshore wind turbine foundation structure is characterized in that the offshore wind turbine foundation structure comprises a plurality of steel pipe piles and a steel platform; the steel platform comprises upper beams, lower beams, upper longitudinal beams, lower longitudinal beams and a steel plate; the lower longitudinal beams are fixedly connected to the lower beams, the upper beams are fixedly connected to the upper portions of the lower longitudinal beams, and the upper longitudinal beams are fixedly connected to the upper portions of the upper beams; and the steel plate is fixedly connected to the upper portions of the upper longitudinal beams to form the integrated steel platform, the lower beams are fixedly connected with the tops of the steel pipe piles, and a steel platform foundation is formed by the steel pipe piles. A construction method includes the steps that the steel platform is built; a crawler crane is assembled onto the steel platform; locating piles are sunk; foundation piles are sunk; a concrete bearing platform is poured; and a tower drum and a fan are arranged. The offshore wind turbine foundation structure has the beneficial effects that it can be guaranteed that the crawler crane is not affected by the stormy waves when working on the steel platform, so that the difficulty of offshore pile foundation construction and tower drum and fan mounting construction is reduced, construction quality is guaranteed, construction efficiency is improved, the construction period can be shortened remarkably, the cost spent in large constriction ships is saved, the construction cost is lowered, and the offshore wind turbine foundation structure is low in cost and capable of being reused.

Description

technical field [0001] The invention belongs to offshore wind power engineering, in particular to an offshore wind turbine foundation structure and a construction method thereof. Background technique [0002] In recent years, wind energy has been vigorously developed as an environmentally friendly and clean energy. At present, my country's wind power is mainly installed on land, but due to the poor stability of land wind resources, the power of the built wind turbines is small, and the annual effective working time is relatively short. It is imperative to develop offshore wind power in areas with rich coastal wind resources. [0003] In view of the fact that the installation and construction of offshore wind power requires the use of various construction ships such as transport ships, crane ships, and piling ships at the same time, the cost of ship machinery is high and the cost is relatively high. At the same time, offshore wind power foundation piling, tower and wind tur...

AI Technical Summary

Problems solved by technology

Patent application number: 201510023908.9 discloses a rotary-type piling guide frame on water, but the piling operation platform relies on the construction ship, and the piling positioning accuracy is relatively poor because the construction ship is easily swayed by wind, waves and water flow

At present, the construction methods of the foundation structure and installation of offshore wind turbines cannot solve the problems of low installation and construction efficiency and high rental costs of marine machinery and equipment.

Images