多维地震动作用下摩擦摆基础隔震结构能量反应分析
|
摘要
对摩擦摆基础隔震结构进行了能量反应分析,研究了多维地震动、地震烈度和支座摩擦系数对结构能量反应的影响,表明水平双向地震动输入时结构总输入能量明显增大,隔震层滞回耗能比增大,上部结构变形耗能比减小;而竖向地震动的参与使结构总输入能量略有增大,隔震层滞回耗能比减小,上部结构变形耗能比增大;随着地震动强度的提高,结构的总输入能量显著增大,隔震层滞回耗能比增大,上部结构变形耗能比减小;随着支座摩擦系数的增大,结构的总输入能量明显增大,隔震层滞回耗能比减小,上部结构的变形耗能比增大。
The energy response analysis for base-isolated structures with a friction pendulum system(FPS) was carried out,the influence of multi-axial ground motions,seismic intensity and bearing friction coefficient on the energy response was studied.When bilateral horizontal ground motions were considered,the total input energy of the structure and the energy dissipation ratio of the vibration-isolation layer increased,the potential energy dissipation ratio of its upper part decreased.When the vertical ground excitation was considered,the total input energy of the structure and the potential energy dissipation ratio of its upper part increased,the energy dissipation ratio of the vibration-isolation layer decreased.As the seismic intensity increased,the total input energy and the energy dissipation ratio of the vibration-isolation layer increased,the potential energy dissipation ratio of the upper part decreased.As the friction coefficient of the FPS increased,the total input energy and the potential energy dissipation ratio of the upper part increased,and the energy dissipation ratio of the vibration-isolation layer decreased.
The energy response analysis for base-isolated structures with a friction pendulum system(FPS) was carried out,the influence of multi-axial ground motions,seismic intensity and bearing friction coefficient on the energy response was studied.When bilateral horizontal ground motions were considered,the total input energy of the structure and the energy dissipation ratio of the vibration-isolation layer increased,the potential energy dissipation ratio of its upper part decreased.When the vertical ground excitation was considered,the total input energy of the structure and the potential energy dissipation ratio of its upper part increased,the energy dissipation ratio of the vibration-isolation layer decreased.As the seismic intensity increased,the total input energy and the energy dissipation ratio of the vibration-isolation layer increased,the potential energy dissipation ratio of the upper part decreased.As the friction coefficient of the FPS increased,the total input energy and the potential energy dissipation ratio of the upper part increased,and the energy dissipation ratio of the vibration-isolation layer decreased.
引文
[1]吕西林,朱玉华,施卫星,等.组合基础隔震房屋模型振动台试验研究[J].土木工程学报,2001,34(2):43-49.
[2]谢一可,叶献国.基础隔震结构的能量反应分析[J].合肥工业大学学报,2006,29(11):1425-1429.
[3]杜永峰,刘凯雁,邵云飞.大震下智能隔震结构的能量响应分析[J].工程抗震与加固改造,2008,30(1):14-18.
[4]Kitamura H,Akiyama H.Seismic Response Prediction forBase-Isolated Building by Considering the Energy Balance[J].Int.Workshop on Recent Developments in Base-IsolationTechniques for Buildings,Tokyo,1992.
[5]周云,徐彤,周福霖.抗震与减震结构的能量分析方法研究与应用[J].地震工程与工程振动,1999,19(4):133-139.
[6]周云,徐彤,贺明玄.基础隔震结构的能量设计方法[J].地震工程与工程振动,2000,20(3):116-122.
[7]建筑抗震设计规范(GB50011-2001)[S].北京:中国建筑工业出版社,2008.
[2]谢一可,叶献国.基础隔震结构的能量反应分析[J].合肥工业大学学报,2006,29(11):1425-1429.
[3]杜永峰,刘凯雁,邵云飞.大震下智能隔震结构的能量响应分析[J].工程抗震与加固改造,2008,30(1):14-18.
[4]Kitamura H,Akiyama H.Seismic Response Prediction forBase-Isolated Building by Considering the Energy Balance[J].Int.Workshop on Recent Developments in Base-IsolationTechniques for Buildings,Tokyo,1992.
[5]周云,徐彤,周福霖.抗震与减震结构的能量分析方法研究与应用[J].地震工程与工程振动,1999,19(4):133-139.
[6]周云,徐彤,贺明玄.基础隔震结构的能量设计方法[J].地震工程与工程振动,2000,20(3):116-122.
[7]建筑抗震设计规范(GB50011-2001)[S].北京:中国建筑工业出版社,2008.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心