【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。更多还原

【Abstract】 It’s a time-consuming work to compare control effect of viscous dampers in structure to determine the optimal 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 nonlinearity 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 vibration 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.更多还原