LRB非线性恢复力计算方法研究应用
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摘要
通过使用masing规则确定隔震层铅芯橡胶支座(LRB)的恢复力和加卸载路线,求出其在地震动力下的瞬时刚度,将masing规则引入应用于Newmarkβ-法中求解非线性动力问题。通过编制程序,对算例进行研究分析,结果表明该方法可行高效,得出层间隔震结构隔震周期对上下部结构地震反应的影响规律。
By using masing-rule to determine LRB's resilience and loading-unloading process,its instantaneous stiffness is calculated in the ground motion,then,the masing-rule is applied into Newmark-β to solve nonlinear dynamic problems.By establishing processes,the algorithms of the examples are analyzed.The results show that this method is effective,and some conclusions are summarized about how the seismic responses would be affected by isolation period changing.
By using masing-rule to determine LRB's resilience and loading-unloading process,its instantaneous stiffness is calculated in the ground motion,then,the masing-rule is applied into Newmark-β to solve nonlinear dynamic problems.By establishing processes,the algorithms of the examples are analyzed.The results show that this method is effective,and some conclusions are summarized about how the seismic responses would be affected by isolation period changing.
引文
[1]龙晓鸿,李黎.基于ANSYS的LRB性能模拟验证分析[J].工程抗震与加固,2007,29(4):53-56.
[2]Farazad Naeim,James M Kelly.Design of Seismic IsolationSrtuctures:From Theory to Practice[M].Newyork:John Wi-ley&Sons,1999.
[3]Skinner R I,Robinson W H,Meverry G H.An Introductionto seismie Isolation[M].谢礼立,周雍年,赵兴权,译.北京:地震出版社,1996.
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[5]肖明葵,刘纲,白绍良.滞回恢复力模型中求折点的一种方法[J].重庆大学学报,2002,25(1):13-16.
[6]叶昆,李黎,龙晓鸿.LRB基础隔震结构非线性动力响应的非迭代时程计算方法[J].振动与冲击,2008,27(11):46-50.
[7]Tan R Y,Huang M C.System identification of a bridge withlead-rubber bearings[J].Computers&structures,2000.74(3):267-280.
[8]谭平,周云,周福霖.大底盘多塔楼结构的混合隔震控制[J].世界地震工程,2007,23(2):12-19.
[2]Farazad Naeim,James M Kelly.Design of Seismic IsolationSrtuctures:From Theory to Practice[M].Newyork:John Wi-ley&Sons,1999.
[3]Skinner R I,Robinson W H,Meverry G H.An Introductionto seismie Isolation[M].谢礼立,周雍年,赵兴权,译.北京:地震出版社,1996.
[4]Wen Y K.Method for random vibration of hysteretic systemsanalysis[J].Engng Mech ASCE,1976,102:249-263.
[5]肖明葵,刘纲,白绍良.滞回恢复力模型中求折点的一种方法[J].重庆大学学报,2002,25(1):13-16.
[6]叶昆,李黎,龙晓鸿.LRB基础隔震结构非线性动力响应的非迭代时程计算方法[J].振动与冲击,2008,27(11):46-50.
[7]Tan R Y,Huang M C.System identification of a bridge withlead-rubber bearings[J].Computers&structures,2000.74(3):267-280.
[8]谭平,周云,周福霖.大底盘多塔楼结构的混合隔震控制[J].世界地震工程,2007,23(2):12-19.
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