近海风电基础桩土作用3D有限元模拟  

3D-FEM Simulation of Soil Pile Interaction for Offshore Wind Power Generation

作　　者：李炜[1] 郑永明[1] 周永[1] 

机构地区：[1]中国水电顾问集团华东勘测设计研究院,浙江杭州310014

出　　处：《水电能源科学》2010年第8期162-164,共3页Water Resources and Power

摘　　要：针对近海风电桩基础型式,采用接触单元法、表面效应单元法分别构建了桩和土的3D全实体、桩体3D实体有限元模型,以典型海上风电基础桩土作用分析算例,实现了两种模型的有限元计算。计算结果表明,表面效应单元法比接触单元法计算速率高但精度略差,比常规的m法计算精度高,为实际海上风电基础桩土作用的有限元计算分析提供了参考。According to the basic type of pile of offshore wind power generation,the contact element method(CEM) and surface effect element method(SEEM) are used to establish three dimensional solid FEM model of soil,pile and pile body,respectively.Taking the interaction of soil and pile in typical offshore wind power generation for an example,two kinds of FEM models for soil pile interaction analysis are given by using CEM and SEEM.The result shows that the SEEM has faster convergence speed than the CEM;but it has lower accuracy;at the same time,the SEEM has better accurate than the traditional m-method.Thus,it provides reference for FEM analysis of interaction of soil and pile for actual offshore wind power generation.

关 键 词：近海 海上风电 基础桩 桩土作用 有限元模拟 Wind Power Generation 接触单元法 有限元计算 表面效应 有限元模型 作用分析 实体 计算精度 计算结果 计算分析 基础型式 速率 构建 典型 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程] TV7[水利工程—水利水电工程]