【摘要】 根据拉格朗日方程推导了框架结构采用橡胶支座隔震的动力反应分析计算公式,根据龙格-库塔法利用MTALAB语言编制程序求解。结构设置橡胶隔震支座具有明显的隔震效果,能大幅减少结构地震动力反应的层间位移。隔震效果与等效刚度系数kr、等效阻尼系数cr有关,二者合理组合可得到很好的隔震效果。当kr=95 000kN/m,cr=20 000kN/ms,隔震效果最佳。更多还原

【Abstract】 According to Lagrange equation in dynamics the motion equation of the frame with rubber bearing isolation was established.Its solution was approched with MTALAB language programming.The calculation results show that the structural setting rubber bearings has obvious effect of isolation,and the seismic isolation system can significantly reduce the seismic dynamic response of inter-story drift.Effect of isolation is relevant of the equivalent stiffness coefficient kr and the equivalent damping coefficient cr.An optimistic combination of them could exhibit good seismic isolation efficiency.It could reach best combination for kr=95000kN/m,cr=2000kN/m·s.更多还原