摘要
为解决一种摩擦阻尼器组合隔震支座的有效性及计算方法的问题,研究了用于结构设计有限元建模的组合元件计算模型,包括水平向、竖向刚度和滞回模型。使用有限元软件SAP2000,对比研究了布置有该组合支座的优化隔震方案和传统橡胶支座的隔震优化方案在高宽比不同的高层框架剪力墙筒体结构的抗震性能。结果表明:与传统隔震支座方案相比,组合隔震支座隔震方案可适当延长结构自振周期,减小隔震层侧移,有效降低支座拉应力,提高支座的抗倾覆能力和支座耗能,还可有效降低上部结构的层间剪力及侧移等地震响应,证明组合隔震支座方案较传统隔震支座方案综合性收效明显。
To solve the problem of validity and calculation method of a new type of composite isolation bearing with friction damper,this paper studied the finite element method(FEM)calculation model of composite elements for structural design,including horizontal and vertical stiffness and hysteretic model.Using the finite element software SAP2000,and comparing the optimized isolation scheme with the traditional rubber bearing,the seismic performance of high-rise frame-shear wall tube structures with different aspect ratios was studied.Results show that compared with the traditional isolation bearing scheme,the combined isolation bearing scheme can appropriately prolong the natural vibration period of the structure,reduce the lateral displacement of the isolation layer,effectively reduce the tensile stress of the bearing,and improve the overturning resistance and energy consumption of the bearing.It can also effectively reduce the seismic response of the superstructure,such as interlayer shear force and lateral displacement,which proves that the comprehensive effect of the combined isolation bearing scheme is obvious compared with that of the traditional isolation bearing scheme.
作者
高向宇
吴凡
韩汶利
田杰
王作杰
GAO Xiangyu;WU Fan;HAN Wenli;TIAN Jie;WANG Zuojie(Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit,Beijing University of Technology,Beijing 100124,China)
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2024年第5期558-570,共13页
Journal of Beijing University of Technology
基金
国家自然科学基金资助项目(51578029)。
关键词
摩擦阻尼器
组合隔震支座
时程分析
高宽比
有限元分析
隔震方案优化
friction damper
combined isolation bearing
time history analysis
aspect ratio
finite element analysis
optimization of isolation scheme
