反应谱理论及其在电阻架抗震分析中的应用  

Response spectrum theory and its application to anti-seismic analysis of resistor bracket

作　　者：卢志珍 许京荆[2] 王正涛[2] 赵辉[2] 袁琨[2] 

机构地区：[1]江苏省电子产品装备制造工程技术研究开发中心,江苏淮安223003 [2]上海大学机电工程与自动化学院,上海200072

出　　处：《世界地震工程》2015年第4期122-127,共6页World Earthquake Engineering

基　　金：江苏省教育厅2012年度高校科研成果产业化推进项目(JHZD201259)

摘　　要：以高压绝缘电阻架为研究对象,基于振型分解反应谱理论,建立了三维梁壳单元有限元分析模型。结合电阻架的动力特性和地震响应谱,并计入结构阻尼对地震反应的影响,进行了电阻架的模态分析和反应谱分析,得到了电阻架在双向水平与扭转地震偶联作用下的位移、速度、加速度响应以及应力。分析结果表明,电阻架位移和速度的最大响应点在最顶层电阻器上,加速度最大的位置在铜管。地震响应的应力评定满足结构强度要求,该方法为电阻架的抗震设计提供了参考及依据。The 3D finite element analysis model consisting of beam and shell elements was applied to research on the high-pressure insulated resistor bracket. Based on the mode decomposition response spectrum theory and combi- ning the dynamic properties of resistor bracket with seismic response spectrum, the effect of structural damping on seismic response was considered, the modal analysis and response spectrum analysis of the resistor braeked were provided, and the displacement, velocity, acceleration and stress responses of resistor bracket under coupling ac- tion of hi-horizontal and torsional seismic inputs were obtained. Analysis results indicate that there are maximum displacement and velocity of responses at top layer of the resistor bracket, the maximum acceleration response oc- curs at the location of copper tube, and the results of stress assessment represent that the strength of resistor bracket satisfies the seismic design requirment. This method provides a reference and basis for the seismic design of resistor bracket.

关 键 词：振型分解 电阻架 抗震设计 有限元分析 反应谱分析 应力评定 

分 类 号：TU31[建筑科学—结构工程]