| 平面不对称结构非弹性地震反应分析的平扭耦联Bouc-Wen模型 |
| |
| 引用本文： | 余波,杨绿峰.平面不对称结构非弹性地震反应分析的平扭耦联Bouc-Wen模型[J].地震工程与工程振动,2011,31(6):78-87. |
| |
| 作者姓名： | 余波 杨绿峰 |
| |
| 作者单位： | 1. 广西大学工程防灾与结构安全教育部重点实验室,广西南宁,530004
2. 广西大学工程防灾与结构安全教育部重点实验室,广西南宁,530004;广西壮族自治区住房和城乡建设厅,广西南宁,530028 |
| |
| 基金项目： | 国家自然科学基金项目，国家留学基金委研究生专项项目，广西自然科学基金项目 |
| |
| 摘 要： | 综合考虑强度退化、刚度退化、捏拢效应等典型滞回特性的影响,建立了双向地震作用下平面不对称结构非弹性地震动力响应分析的平扭耦联Bouc-Wen模型.该模型采用圆形屈服面来描述双向抗侧恢复力之间的耦合效应,而采用锥体或球体屈服面来描述双向抗侧和抗扭恢复力之间的耦合效应,并结合69条强震记录,定量地分析了平扭耦联效应对平面不...
|
| 关 键 词： | 地震延性需求 平扭耦联效应 强度退化 刚度退化 捏拢效应 |
Lateral-torsional coupling Bouc-Wen model for inelastic seismic response analysis of plan-asymmetric structure |
| |
| YU Bo,YANG Lufeng.Lateral-torsional coupling Bouc-Wen model for inelastic seismic response analysis of plan-asymmetric structure[J].Earthquake Engineering and Engineering Vibration,2011,31(6):78-87. |
| |
| Authors: | YU Bo YANG Lufeng |
| |
| Institution: | 1,2(1.Key Laboratory of Engineering Disaster Prevention and Structural Safety,Ministry of Education, Guangxi University,Nanning 530004,China;2.Agency of Housing and Urban-Rural Development,Guangxi Zhuangzu Autonomous Region,Nanning 530028,China) |
| |
| Abstract: | A new lateral-torsional coupling Bouc-Wen model for inelastic seismic dynamic response analysis of plan-asymmetric structure under bidirectional horizontal excitations was developed considering the strength degradation,stiffness deterioration and pinching effect.In this model,the circular yield surface is adopted to describe the coupling effect between biaxial normalized lateral restoring forces,while the pyramidal or spherical yield surface is adopted to consider the coupling effect between lateral and torsional restoring forces.The influence of lateral-torsional coupling on the statistical characteristic of seismic ductility demand of plan-asymmetric structure was investigated using 69 earthquake records.Analysis results show that the spherical yield surface is better than the pyramidal yield surface to describe the lateral-torsional coupling effect.The mean value of seismic ductility demands increases with the decrease of the normalized yield strength and the uncoupled lateral vibration period.The relation between the logarithms of the seismic ductility demand and the normalized yield strength is almost linear,when the uncoupled lateral vibration period is long.The lateral-torsional coupling effect can amplify the variation of the seismic ductility demands obviously,especially when the normalized yield strength is small and the uncoupled lateral vibration period is short. |
| |
| Keywords: | seismic ductility demand lateral-torsional coupling effect strength degradation stiffness degradation pinching effect |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
