基础隔震异形柱框架结构的参数优化  

Optimizing parameters of the base isolated frame structure with reinforced concrete special shaped column

作　　者：李秋英[1] 刘丽丽[1] 董宏伟[1] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《河北工程大学学报（自然科学版）》2010年第3期5-8,共4页Journal of Hebei University of Engineering:Natural Science Edition

摘　　要：根据叠层橡胶支座和异形柱框架结构体系的非线性特性及相互间的影响,建立三维非线性有限元分析模型。通过改变叠层橡胶支座的阻尼比和刚度,利用SAP2000有限元软件对模型进行不同地震波作用下动力时程分析。结果表明：控制异形柱框架结构的地震反应,可通过优选隔震层动力参数来实现;异形柱框架结构隔震系统阻尼比最优取值范围为0.22~0.27,刚度应在满足允许位移条件下适当降低取值。A three-dimensional nonlinear finite element analysis model has been established according to the non-linear characteristics and mutual influence of the laminated rubber bearing and special pole framework.The model＇s time-history analysis is studied with the SAP2000 by changing the damping radio and rigidity of the laminated rubber bearing under different seismic waves.The results show that the seismic response of the special pole framework could be controlled by optimizing the parameters;the optimal scope of damping radio of special pole framework with laminated rubber bearing is 0.22～0.27 and the value of stiffness should be reduced suitably under the condition of allow displacement.

关 键 词：叠层橡胶支座 异形柱框架结构 SAP2000 时程分析 参数优化 

分 类 号：TU352.1[建筑科学—结构工程]