地基土刚度变化对地震模拟振动台基础的影响  

The influence of foundation soil stiffness change to earthquake simulation shaking table

作　　者：宋家欢 陶德怀 刘艳辉[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《山西建筑》2016年第33期45-47,共3页Shanxi Architecture

摘　　要：通过某些近似公式确定不同地基土的弹性模量和天然地基土的抗压刚度系数,采用ANSYS有限元方法和《动力机器基础设计规范》的相关方法,对西南交大地震模拟振动台基础进行谐响应分析,得出的两组解能够较好的吻合,发现地基土刚度在超过一定范围之后对振动台基础的加速度响应影响很小。Through some approximate formulas determination of the elastic modulus of different foundation soil and the compression stiffness coefficient of natural foundation soil,using the related method using the ANSYS finite element method and Dynamic Machine Foundation Design Code,made spectrum response analysis on earthquake simulation shaking table of Southwest Jiaotong University,gained the two sets of solutions could be in good agreement,found the foundation soil stiffness more than a certain range had little effect to the acceleration response of shaking table.

关 键 词：地震模拟振动台 动力机器基础 地基土刚度 谐响应分析 

分 类 号：TU352[建筑科学—结构工程]