黏滞阻尼器在单层网壳结构中的优化布置  

Optimal placement of viscous dampers in single-layer reticulated shell

作　　者：丁阳[1] 葛金刚[1] 

机构地区：[1]天津大学建筑工程学院/滨海土木工程结构与安全教育部重点实验室,天津300072

出　　处：《地震工程与工程振动》2012年第4期166-173,共8页Earthquake Engineering and Engineering Dynamics

基　　金：重大研究计划重点项目(90715034);国家自然科学基金面上项目(50978181);天津市应用基础及前沿技术研究计划(09JCZDJC25200)

摘　　要：目前采用黏滞阻尼器对单层网壳结构进行减振控制时,阻尼器最优布置位置通过试算确定。针对此问题,推导了地震作用下黏滞阻尼器耗能公式,提出了以能量比例系数为评价指标的阻尼器优化布置准则。以单层球面网壳和单层柱面网壳为例,对比分析了地震作用下分别采用优化布置准则与现有布置方式布置阻尼器时结构最大节点位移减振系数,验证了所提出优化布置准则的正确性及在单层球面网壳和单层柱面网壳中的适用性。It＇ s a time-consuming work to compare control effect of viscous dampers in structure to determine the op- timal placement of viscous dampers in single-layer reticulated shell. Energy dissipation of viscous dampers under seismic action is derived, and the optimal placement criterion of viscous dampers is proposed according to energy proportional coefficient which is based on strain energy of members of structure under seismic action. Dynamic non- linearity analysis is applied to single-layer spherical reticulated shell and single-layer cylindrical reticulated shell with viscous dampers by using optimal placement criterion and existing arrangement mode, and the maximum vibra- tion reduction radio of the displacement is compared to certify the correctness and applicability of optimal placement criterion in single-layer spherical reticulated shell and single-layer cylindrical reticulated shell.

关 键 词：单层网壳 黏滞阻尼器 应变能 优化布置 

分 类 号：TU352[建筑科学—结构工程] P315.91[天文地球—地震学]