摘要
针对框架结构 ,采用粘弹性阻尼器来控制其地震响应 ,提出了粘弹性阻尼器的等效刚度矩阵和等效附加粘弹性力向量的概念 ,推导了子结构平面内的粘弹性阻尼器的有限元计算公式 ,在此基础上 ,提出了结构等效附加粘弹性力荷载的概念 ,采用拟外荷载法对安装了粘弹性阻尼器的框架结构的弹塑性地震响应进行了计算分析 ,开发了计算受粘弹性阻尼器控制的框架结构的动力特性、受控框架结构的地震弹性响应、受控框架结构的地震弹塑性响应的计算机程序。应用所开发的计算程序对一框架结构在粘弹性阻尼器控制下的地震响应进行了计算 ,计算表明 ,粘弹性阻尼器可以有效地控制框架结构的地震响应、采用拟外荷载法可以有效地求解受控结构的运动方程。
VED is used for controlling the seismic response of R-C frame, the definitions of equivalent stiffness matrix and equivalent additional viscoelastic force vector of VED are given and the finite element calculation formula of VED is derived in the sub-structure plan. For structure, the equivalent additional viscoealstic loading is presented. The elastic-plastic seismic response of R-C frame controlled by VED is solved using the pseudo-loading method and the programs of calculating the dynamic characteristic, the elastic seismic response and the elastic-plastic seismic response of R-C frame controlled by VED are compiled. As an example, the response of a frame controlled by VED is analysed using the programs. The results show that VED is effective in controlling the seismic response of frame and the pseudo-loading method is reliable in calculation.
出处
《振动与冲击》
EI
CSCD
北大核心
2004年第1期78-82,共5页
Journal of Vibration and Shock
基金
陕西省教育厅专项基金 (0 2JK1 2 0 )资助项目
