建筑结构隔震体系的动力反应
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摘要
运用隔震理论建立结构隔震体系的动力模型和运动方程,着重考虑了隔震体系的恢复力特性,进行了隔震体系在时域内的地震反应程序设计。算例表明,隔震体系上部结构的动力反应幅值均可以大大降低。其中,顶层相对地面位移降低了13.62%,层间位移降低了35.57%,最大绝对加速度降低了33.68%,层间剪力降低了35.60%。
The dynamic model and equations of motion are established for the seismic isolation system by using related seismic isolation theory. The restoring force of the isolation system is studied, and the dynamic response program of the isolation system under earthquake excitation is drawn up in the time domain. A calculation example is presented, and the isolation system is compared with the non-isolation system, which indicates that the dynamic response extent can be decreased greatly. The displacement of top floor relative to that of ground decreased 13.62 percent,the displacement of interstorey decreased 35.57 percent,the maximal absolute acceleration decreased 33.68 percent, and the shearing force of interstorey decreased 35.60 percent.
The dynamic model and equations of motion are established for the seismic isolation system by using related seismic isolation theory. The restoring force of the isolation system is studied, and the dynamic response program of the isolation system under earthquake excitation is drawn up in the time domain. A calculation example is presented, and the isolation system is compared with the non-isolation system, which indicates that the dynamic response extent can be decreased greatly. The displacement of top floor relative to that of ground decreased 13.62 percent,the displacement of interstorey decreased 35.57 percent,the maximal absolute acceleration decreased 33.68 percent, and the shearing force of interstorey decreased 35.60 percent.
引文
[1] 涂文戈,邹银生.MTMD减震结构体系的频域分析[J].工程力学,2003,20(3):78-88.
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[7] 李桂青.抗震结构计算理论和方法[M].北京:地震出版社,1985.123-166.
[8] 晏启祥,刘浩吾,何 川.一种改进的Wilson-θ法及其算法稳定性[J].土木工程学报,2003,36(10):76-79
[2] 朱东生,王根会,陈兴冲.单自由度双线性隔震装置地震反应研究[J].工程力学,2002,19(3):59-63.
[3] 周福霖.工程结构减震控制[M].北京:地震出版社,1997.66-115.
[4] 李红梅,侯建娟.摩擦滑移隔震结构的减震分析[J].河北农业大学学报,2002,25(3):102-105.
[5] 王修勇,陈震清.磁流变阻尼器对斜拉索振动控制研究[J].工程力学,2002,19(6):22-28,48.
[6] 干 洪,张伟林,张运涛.框架结构抗震计算有限元过程的重要改进[J].安徽建筑工业学院学报,1997,5(3):1-5.
[7] 李桂青.抗震结构计算理论和方法[M].北京:地震出版社,1985.123-166.
[8] 晏启祥,刘浩吾,何 川.一种改进的Wilson-θ法及其算法稳定性[J].土木工程学报,2003,36(10):76-79
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