铅芯橡胶基础隔震结构在多向地震作用下的分析与研究
|
摘要
分别建立了传统结构与隔震结构的三维有限元模型,通过对这两种结构进行动力特性分析和考虑单向、双向、三向地震作用下的动力时程分析,研究多向地震作用对框架结构的影响。研究分析表明:对于水平隔震,在三向坚硬场地波的作用下,结构的反应增大;对于竖向隔震,隔震结构比传统结构的地震响应都要大,且在双向与三向地震动时,结构的层间剪力和底层柱轴力有较大的影响。因此,在进行铅芯橡胶基础隔震设计时,要考虑结构多向地震作用,尤其是竖向地震作用对结构的影响。
Aims at establishing the three-dimensional finite element models of traditional structure and isolated structure,through analyzing these two structures with dynamic characteristics and dynamic time history,an explanation about one-dimensional,two-dimensional,three-dimensional earthquake actioning and do research on the effects of multiple-dimensional earthquake action on the structures is will given.Analysis shows that:the response of the structure increases under the action of multiple-dimensional hard site earthquake wave to the horizontal seismic isolation;to the vertical seismic isolation.The arthquake response of the solated structure greater than traditional structure,story shear force and the axial force of bottom columns are bigger with two-dimensional,three-dimensional earthquake actioned.During the design of the lead-rubber base isolated,it should consider three-dimensional earthquake action,in particular the role of vertical earthquake effects on structures.
Aims at establishing the three-dimensional finite element models of traditional structure and isolated structure,through analyzing these two structures with dynamic characteristics and dynamic time history,an explanation about one-dimensional,two-dimensional,three-dimensional earthquake actioning and do research on the effects of multiple-dimensional earthquake action on the structures is will given.Analysis shows that:the response of the structure increases under the action of multiple-dimensional hard site earthquake wave to the horizontal seismic isolation;to the vertical seismic isolation.The arthquake response of the solated structure greater than traditional structure,story shear force and the axial force of bottom columns are bigger with two-dimensional,three-dimensional earthquake actioned.During the design of the lead-rubber base isolated,it should consider three-dimensional earthquake action,in particular the role of vertical earthquake effects on structures.
引文
1GB50011—2001,建筑抗震设计规范,北京:中国建筑工业出版社,2008:125—126GB50011—2001,Code For Seismic Design Of Building.2008:125—126
2杨彦飞,何文福,任冰燕.连续桥梁三维隔震体系地震反应分析.结构工程师,2009;25(3):90—96
3贾俊峰,欧进萍.连续板桥竖向隔震的弹性时程分析.西安建筑科技大学学报(自然科学版),2006;38(4):463—466.
4王建强,冯俊昌,李大望.摩擦摆基础隔震结构多维地震反应分析.世界地震工程,2009;25(4):92—96
5谷伟,刘斌.橡胶垫层基础隔震结构考虑竖向地震作用高宽比限制的研究.工业建筑,2004;34(10):17—20
2杨彦飞,何文福,任冰燕.连续桥梁三维隔震体系地震反应分析.结构工程师,2009;25(3):90—96
3贾俊峰,欧进萍.连续板桥竖向隔震的弹性时程分析.西安建筑科技大学学报(自然科学版),2006;38(4):463—466.
4王建强,冯俊昌,李大望.摩擦摆基础隔震结构多维地震反应分析.世界地震工程,2009;25(4):92—96
5谷伟,刘斌.橡胶垫层基础隔震结构考虑竖向地震作用高宽比限制的研究.工业建筑,2004;34(10):17—20
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