大型风机扩展式基础上阶高度敏感性分析  

Sensitivity Analysis of Spreading Foundation Step Height for Large Wind Turbine

作　　者：许新勇[1] 罗全胜[2] 张迪[2] 刘宪亮[3] 

机构地区：[1]华北水利水电学院,河南郑州450011 [2]黄河水利职业技术学院,河南开封475003 [3]南水北调中线干线工程建设管理局,北京100038

出　　处：《水力发电》2012年第8期86-88,92,共4页Water Power

基　　金：国家自然科学基金(51109081);河南省基础与前沿技术研究项目(122300410001)

摘　　要：针对大型风机扩展式基础台阶上阶高度的变化,基于ANSYS平台建立了不同高度的多工况三维有限元数值模型。引入基础钢环与混凝土及地基之间的非线性接触,研究了上阶高度变化对风机塔架基础特殊形式的受力影响,明确了基础结构沉降规律。对台阶变化引起的结构受力特性的改变进行了分析,确定和提出了合理的台阶高度范围。The ANSYS-based three-dimensional finite element numerical model is established herein to analyze the sensitivity of different step height of spreading foundation for wind turbine. By introducing nonlinear contacts between foundation ring and concrete, as well as between foundation concrete and ground, the effects of different step height on the settlement of structure and the stress status are studied. The mechanisms of stress and displacement of foundation are also researched. A reasonable step height of spreading foundation is proposed.

关 键 词：大型风机 扩展式基础 台阶高度 敏感性分析 

分 类 号：P642.22[天文地球—工程地质学]