海上单桩风力发电平台桩土作用探析

The Analysis of the Pile-soil Interaction for the Monopile Offshore Wind Power Platform

空气流动产生的风能,是一种可再生能源,是太阳能的一张转化形式,取之不尽,用之不竭,零污染。海上风能的开发需要风力发电平台作为载体。目前中海油渤海海上风力发电示范项目已经并网发电,并达到了预定的目标。本文分析的风力发电平台基础采用国际上商业化所通用的单桩基础,文中主要涉及风力发电平台的单桩基础和地基的相互作用,按照规范的推荐做法,采用ANSYS软件的COMBINE39单元模拟桩、土的相互作用,得出了风力发电平台单桩基础的横向位移和应力。结合国内外的风力发电工程实践,本论文还对今后海上风力发电场的基础结构进行了展望。

Wind is renewable,inexhaustible and causes no pollution. The purpose of the offshore wind turbines is to make the best use of wind energy. The demonstration project of offshore wind turbines has been completed successfully and achieved the intended aim so far. Now,a offshore wind platform with monopile foundations to support the turbine is analysed,which have been commercially adopted since 1990＇s. The paper is mainly about the pile-soil interaction of the monopole foundations. According to the recommended practices,the calculation for the pile resistance includes the axial and the lateral resistance. And the interaction between the pile and the soil is simulated with the finite element model,using the Ansys software. Considering the offshore wind turbines home and abroad,the paper summarizes the types of the foundations and make some predictation for the future support structure.