【摘要】 阐述了隔震支座的力学性能,推导了隔震系统的动力平衡方程,利用大型有限元软件SAP2000在7度罕遇EL-Centro地震波作用下对隔震层置于底层、三层及八层柱顶的层间隔震框架结构进行动力时程分析,包括楼层位移、剪力和加速度,并对计算结果与传统抗震结构进行比较分析。研究结果表明,层间隔震具有良好的隔震效果,但隔震层位置的高低对层间隔震的减震效果有较大的影响,隔震层位置越低,减震效果越明显。更多还原

【Abstract】 The mechanical properties of seismic isolation bearings were described.Dynamic equilibrium equations of the isolation system were derived.Large-scale structural finite element analysis software SAP2000 was employed to make a dynamic time-history analysis of the storey seismic isolation bearings placed on layer 1,3 and at 8 interval of 7 degrees in the severe earthquake of EL-Centro wave,including the floor displacement,shear force and acceleration.The calculation results were compared with the non-isolated structure.The research results show that storey seismic isolation bearings has a significant shock damping effect;that the location of the storey seismic isolation has a great impact on the shock damping effects;that the lower the location of the isolation layer,the better the damping effect is.更多还原