多维多点输入下压电智能网壳结构的动力稳定性分析  

Dynamic Stability Analysis of Piezoelectric Intelligent Reticulated Shell Structures Under Multi-dimensional and Multi-support Excitations

作　　者：王社良[1] 张雪峰[1] 朱军强[1] 马乾瑛[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《建筑科学与工程学报》2010年第3期8-12,共5页Journal of Architecture and Civil Engineering

基　　金：国家自然科学基金重大研究计划项目(90715003);国家自然科学基金项目(10972168);国家自然科学基金项目(51008245);国家重点实验室开放项目(08KF02);教育部高等学校博士学科点专项科研基金项目(200807030002);教育部科学技术研究重点项目(209124);陕西省自然科学基础研究基金青年人才项目(2009JQ7005);陕西省自然科学基础研究计划项目(2007E205);陕西省工业攻关项目(2008K07-31);陕西省教育厅重点实验室科研计划项目(09JS022)

摘　　要：以40 m跨度K6型单层球面网壳为研究对象,采用时程分析法对大跨空间网壳结构进行了多维多点输入和单点一致输入下的地震响应分析,比较了2种地震荷载作用下的结构响应;将大跨空间网壳结构中受力较大的杆件替换为压电智能杆件,对比分析了多维多点输入下结构安装压电智能杆件前后的地震响应变化。结果表明:多维多点输入相对单点一致输入对大跨空间网壳结构会产生更加不利的影响,在网壳结构的抗震设计中是必须考虑的;安装压电智能杆件后结构多数杆件的地震响应明显减小,达到了稳定控制的效果。The seismic response of 40 m span of K6 single-layer reticulated shell was analyzed in the conditions of multi-dimensional and multi-support excitations,and simple support excitation respectively based on the time history analysis method.The structural responses under the two forms of earthquake loads were compared.Piezoelectric intelligent bars were installed at the weak parts of the long-span space reticulated shell structures.The seismic response changes of the structures before and after the installation of piezoelectric intelligent bar were compared under multi-dimensional and multi-support excitations.The results show that multi-dimensional and multi-support excitations on long-span space reticulated shell structures will have more adverse impact than single support excitation and thus could be considered in design process.The seismic response of the majority bars reduce significantly after the structure installing the piezoelectric intelligent bars,which reach the effect of structure intelligent stable control.

关 键 词：大跨空间网壳 时程分析 多维多点输入 单点一致输入 压电智能杆件 

分 类 号：TU311.3[建筑科学—结构工程]