|
|||||
|
|
| 单轴平扭耦联基础隔震结构动力简化分析 | |
| 引用本文： | 王铁成,徐明贵,谢宜峰,李向真.单轴平扭耦联基础隔震结构动力简化分析[J].世界地震工程,2012,28(1):14-20. |
| 作者姓名： | 王铁成 徐明贵 谢宜峰 李向真 |
| 作者单位： | 1. 天津大学建筑工程学院,天津300072;滨海土木工程结构与安全教育部重点实验室(天津大学),天津300072 2. 天津大学建筑工程学院,天津,300072 3. 广州大学土木工程学院,广东广州,510006 |
| 摘 要： | 为了建立单轴平扭耦联基础隔震结构的动力简化分析方法,探讨了影响结构扭转反应的参数取值规律,首先基于层单元模型,通过假定上部结构楼层回转半径、偏心距、弹力半径相等,推导了单轴平扭耦联基础隔震结构线性化的动力计算方程;其次,运用该简化分析方程,通过一算例进行了动力响应的参数分析。结果表明:调整隔震层刚心使其与上部结构质心位置接近,可显著降低偏心隔震结构扭转反应;增大隔震层刚度半径及阻尼半径可有效减少或抑制结构扭转反应;所建简化分析方程能有效模拟偏心隔震结构动力响应。 |
| 关 键 词： | 基础隔震 平扭耦联 简化分析 层单元 |
Simplified dynamic analysis of single-axis lateral-torsional base-isolated structure |
|
| WANG Tiecheng , XU Minggui , XIE Yifeng , LI Xiangzhen.Simplified dynamic analysis of single-axis lateral-torsional base-isolated structure[J].World Information On Earthquake Engineering,2012,28(1):14-20. | |
| Authors: | WANG Tiecheng XU Minggui XIE Yifeng LI Xiangzhen |
| Institution: | 1.School of Civil Engineering,Tianjin University,Tianjin 300072,China;2.Key Laboratory of Coast Civil Structure Safety(Tianjin University), Ministry of Education,Tianjin 300072,China;3.School of Civil Engineering,Guangzhou University,Guangzhou 510006,China;) |
| Abstract: | For establishing simplified calculation analysis of single-axis lateral-torsional isolated structures and investigating rules which affect values of parameters in torsional structure responses,firstly,based on layer element model,a linear dynamic calculation equation of single-axis lateral-torsional isolated structures was deduced through a presumption that each storey of superstructure has equal gyratory radius,eccentricity and elastic radius,then we used the simplified equation to analyze parameters in dynamics responses by an example.The results show that: a position nearness between stiffness center of isolation and mass center of superstructure,as good as increasing stiffness radius and damping radius of isolation layer can significantly reduce the torsional response of eccentric isolation structure;in conclusion,our simplified analysis equation is available in simulating the dynamic responses in eccentric isolation structure. |
| Keywords: | base isolation lateral-torsional coupling simplified analysis layer element |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |