Taft波下结构采用铅芯橡胶支座调谐质量系统的减震效果分析  

Research about efficiency of vibration mitigation for structure with LRB in Taft wave

作　　者：闫亚汐 刘琦 谷莹蕾 苏幼坡 Yan Ya-xi;Liu Qi;Gu Ying-lei;Su You-po(Qinggong College,North China University of Science and Technology,Tangshan 063000,China;Tangshan Iron And Steel International Engineering Technology Co.Ltd,Tangshan 063000,China;North China University of Science and Technology,Tangshan 063000,China)

机构地区：[1]华北理工大学轻工学院,河北唐山063000 [2]唐山钢铁国际工程技术股份有限公司,河北唐山063000 [3]华北理工大学,河北唐山063000

出　　处：《工程抗震与加固改造》2020年第1期64-68,共5页Earthquake Resistant Engineering and Retrofitting

摘　　要：基于拉格朗日方程推导出一个框架结构在设置铅芯橡胶支座调谐质量系统后的动力反应的计算公式,运用Newmark-β方法求解出计算结果。结果表明:结构在设置铅芯橡胶支座调谐质量后减震效果明显,减震效果和铅芯橡胶支座刚度、阻尼系数以及调谐质量有关,当铅芯橡胶支座的刚度为35000kN/m、阻尼为3000kN/m·s、调谐质量与楼层质量的比值在1.5以上时,调谐质量系统的减震效果最佳。Based on the Lagrange equation,a calculation formula of the dynamic response of the frame structure after setting the lead rubber bearing tuned mass system,and the calculation results are solved by Newmark-βmethod.It is found that the damping effect of the structure is obvious after setting the tuned mass of lead rubber bearing,and the damping effect is related to the stiffness,damping coefficient and tuned mass of lead rubber bearing.When the stiffness of lead rubber bearing is 35000kN/m,damping is 3000 kN/m·s,and the ratio of tuned mass to floor mass is more than 1.5,the damping effect of tuned mass system is the best.

关 键 词：铅芯橡胶 层间位移 Newmark-β方法 线性方程 

分 类 号：TU352.1[建筑科学—结构工程]