隔震技术在大跨空间网壳结构中的应用研究
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摘要
文章介绍了基础隔振技术在结构抗震中的应用,给出了铅芯橡胶隔震支座的有限元模型和求解基础隔震动力方程的非线性方法,并结合实际工程,进行了大跨度凯威特网壳结构的基础隔震分析研究,可以得到,设置隔震系统之后,结构的自振周期明显增长,降低了结构的地震荷载作用,上部结构的位移有所增大,符合隔震特征,但是需要注意结构的整体稳定性,结构的加速度得到了有效控制,同时对于下部结构的作用明显减小,可以对实际工程提供参考指导。
This paper describes the application of the basic seismic isolation technology in the structure anti-seismic,gives the finite element model of the lead-rubber bearings and the nonlinear method to solve the basic isolation dynamic equations,and carries out a large span Kai Weite shell structure of the base isolation analysis combined with the actual project.It can be concluded that after setting the isolation system,the natural cycle of the structure is significantly enlarged;after reducing the seismic loads,the displacement of the upper structure has been increased in line with the isolation features,but the overall stability of the structure should be assured;the acceleration of the structure has been effectively controlled,while its effect on the lower part of the structure is significantly reduced,providing a reference guidance for the actual project.
This paper describes the application of the basic seismic isolation technology in the structure anti-seismic,gives the finite element model of the lead-rubber bearings and the nonlinear method to solve the basic isolation dynamic equations,and carries out a large span Kai Weite shell structure of the base isolation analysis combined with the actual project.It can be concluded that after setting the isolation system,the natural cycle of the structure is significantly enlarged;after reducing the seismic loads,the displacement of the upper structure has been increased in line with the isolation features,but the overall stability of the structure should be assured;the acceleration of the structure has been effectively controlled,while its effect on the lower part of the structure is significantly reduced,providing a reference guidance for the actual project.
引文
[1]储烨,叶继红.大跨空间网格结构在多点输入下的弹塑性地震响应分析[J].空间结构,2006,12(2):28-33.
[2]支旭东,范峰,沈世钊.凯威特型单层球面网壳在强震下的失效研究[J].工程力学,2008,25(9):7-12.
[3]黄明开,楼梦麟.浦东机场候机楼竖向地震行波效应时程分析[J].地震工程与工程振动,2009,29(3):15-21.
[4]李慧,刘迪,杜永峰.附设耗能装置的高层基础隔震建筑抗震性能研究[J].土木工程学报,2010(S1):276-281.
[5]叶昆,符蓉,李黎.考虑上部结构非线性的LRB基础隔震建筑结构动力特性研究[J].土木工程学报,2010:310-316
[6]王建强,金建洲,丁永刚,李大望.摩擦摆基础隔震上部偏心结构地震反应影响因素分析[J].世界地震工程,2010(1):99-104.
[7]孙建刚,崔利富,王金国.柔性储罐底环梁基础隔震地震动响应分析[J].建筑结构学报,2008(S1):68-73.
[8]陈尚鸿,祁皑,陈红媛.关于基础隔震结构中隔震影响系数的研究[J].福州大学学报(自然科学版),2005:244-248.
[9]刘云贺,张俊发,王克成,俞茂宏.铅芯橡胶减震支座的非线性动力性态研究[J].西安交通大学学报,1999(12):73-77.
[10]朱玉华,吕西林,冯德民.铅芯橡胶支座性能试验对比研究[J].建筑结构,2003(8):44-46.
[2]支旭东,范峰,沈世钊.凯威特型单层球面网壳在强震下的失效研究[J].工程力学,2008,25(9):7-12.
[3]黄明开,楼梦麟.浦东机场候机楼竖向地震行波效应时程分析[J].地震工程与工程振动,2009,29(3):15-21.
[4]李慧,刘迪,杜永峰.附设耗能装置的高层基础隔震建筑抗震性能研究[J].土木工程学报,2010(S1):276-281.
[5]叶昆,符蓉,李黎.考虑上部结构非线性的LRB基础隔震建筑结构动力特性研究[J].土木工程学报,2010:310-316
[6]王建强,金建洲,丁永刚,李大望.摩擦摆基础隔震上部偏心结构地震反应影响因素分析[J].世界地震工程,2010(1):99-104.
[7]孙建刚,崔利富,王金国.柔性储罐底环梁基础隔震地震动响应分析[J].建筑结构学报,2008(S1):68-73.
[8]陈尚鸿,祁皑,陈红媛.关于基础隔震结构中隔震影响系数的研究[J].福州大学学报(自然科学版),2005:244-248.
[9]刘云贺,张俊发,王克成,俞茂宏.铅芯橡胶减震支座的非线性动力性态研究[J].西安交通大学学报,1999(12):73-77.
[10]朱玉华,吕西林,冯德民.铅芯橡胶支座性能试验对比研究[J].建筑结构,2003(8):44-46.
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