基于正交试验法的随机地震响应的参数分析
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摘要
考虑地震的随机性和土体的非线性,引入粘弹性边界和正交试验法,提出了一种在谐响应分析中直接输入加速度的加载方式,建立了基于虚拟激励法、等效线性化法和确定性动力有限元法相结合的非线性桩-土体系的随机地震响应的参数敏感性分析方法。研究了桩土模量比、地震动输入水平、桩的长径比等无量纲参数对随机响应的影响。结果表明:桩土模量比是最敏感的因素。
Considering the randomness of earthquakes and the nonlinearity of soil,introducing the viscous-spring boundary and the orthogonal trial method,the loading pattern of inputting acceleration directly in harmonic response analysis is proposed,and the parametric sensitivity analyses of stochastic vibration response for pile-soil interaction system based on pseudo-excitation method,equivalent linearization method and deterministic dynamic finite element method are researched.The parametric sensitivity analyses of the pile-soil system with respect to pile-soil modulus ratio,earthquake design level,and pile slenderness ratio are accomplished in detail.The results showed that the pile-soil stiffness ratio is the most sensitive one among three factors.
Considering the randomness of earthquakes and the nonlinearity of soil,introducing the viscous-spring boundary and the orthogonal trial method,the loading pattern of inputting acceleration directly in harmonic response analysis is proposed,and the parametric sensitivity analyses of stochastic vibration response for pile-soil interaction system based on pseudo-excitation method,equivalent linearization method and deterministic dynamic finite element method are researched.The parametric sensitivity analyses of the pile-soil system with respect to pile-soil modulus ratio,earthquake design level,and pile slenderness ratio are accomplished in detail.The results showed that the pile-soil stiffness ratio is the most sensitive one among three factors.
引文
[1]周勇军,全伟,贺拴海.基于正交试验的连续刚构桥地震响应敏感性参数分析[J].地震研究,2006,29(2):176-182.Zhou Yongjun,Quan Wei,He Shuanhai.Analysis on sensitive parameters to earthquake response of continuous rigid frame bridges based on crosstest technique[J].Journal of Seismological Research,2006,29(2):176-182.
[2]肖晓春,迟世春,林皋,等.地震荷载下桩土相互作用简化计算方法及参数分析[J].大连理工大学学报,2002,42(6):719-723.Xiao Xiaochun,Chi Shichun,Lin Gao,et al.Simplified method and parametric analysis for pile-soil dynamic interaction under seismic loading[J].Journal of Dalian University of Technology,2002,24(6):719-723.
[3]Gazetas G.Seismic response of end-bearing single piles[J].Soil Dyn Earthq Eng,1984,3(2):82-93.
[4]吴再光,韩国城,林皋.随机土动力学概论[M].大连:大连理工大学出版社,1992.Wu Zaiguang,Han Guocheng,Lin Gao.Introduction of Stochastic Soil Dynamics[M].Dalian:Dalian University of Technology Press,1992.
[5]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004.Lin Jiahao,Zhang Yahui.Pseudo-excitation Method for Random Vibration[M].Beijing:Science Press,2004.
[6]吴再光.土层随机地震反应的一种改进算法[J].振动工程学报,1990,3(1):56-59.Wu Zaiguang.A modified method for the computation of stochastic seismic responses of soil layers[J].Journal of Vibration Engineering,1990,3(1):56-59.
[7]周爱红,张鸿儒,袁颖.土工结构随机地震响应分析实用方法研究[C]//中国土木工程学会第十届土力学及岩土工程学术会议.重庆:重庆大学出版社,2007:604-608.Zhou Aihong,Zhang Hongru,Yuan Ying.Study on practical method of analysis of stochastic seismic responses of soil structures[C]//Proceed-ings of the 10th Conference on Soil Mechanics and Geotechnical Engineering.Chongqing:Chongqing University Press,2007:604-608.
[8]陈魁.试验设计与分析[M].北京:清华大学出版社,1996.Chen Kui.Design and Analysis of Experiments[M].Beijing:Tsinghua University Press,1996.
[9]孙景江,江近仁.与规范反应谱对应的金井清谱的谱参数[J].世界地震工程,1990,8(1):42-48.Sun Jingjiang,Jiang Jinren.Spectrum parameter of Kanai-Tajimi spectrum corresponding to code response spectrum[J].World Earthquake Engi-neering,1990,8(1):42-48.
[2]肖晓春,迟世春,林皋,等.地震荷载下桩土相互作用简化计算方法及参数分析[J].大连理工大学学报,2002,42(6):719-723.Xiao Xiaochun,Chi Shichun,Lin Gao,et al.Simplified method and parametric analysis for pile-soil dynamic interaction under seismic loading[J].Journal of Dalian University of Technology,2002,24(6):719-723.
[3]Gazetas G.Seismic response of end-bearing single piles[J].Soil Dyn Earthq Eng,1984,3(2):82-93.
[4]吴再光,韩国城,林皋.随机土动力学概论[M].大连:大连理工大学出版社,1992.Wu Zaiguang,Han Guocheng,Lin Gao.Introduction of Stochastic Soil Dynamics[M].Dalian:Dalian University of Technology Press,1992.
[5]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004.Lin Jiahao,Zhang Yahui.Pseudo-excitation Method for Random Vibration[M].Beijing:Science Press,2004.
[6]吴再光.土层随机地震反应的一种改进算法[J].振动工程学报,1990,3(1):56-59.Wu Zaiguang.A modified method for the computation of stochastic seismic responses of soil layers[J].Journal of Vibration Engineering,1990,3(1):56-59.
[7]周爱红,张鸿儒,袁颖.土工结构随机地震响应分析实用方法研究[C]//中国土木工程学会第十届土力学及岩土工程学术会议.重庆:重庆大学出版社,2007:604-608.Zhou Aihong,Zhang Hongru,Yuan Ying.Study on practical method of analysis of stochastic seismic responses of soil structures[C]//Proceed-ings of the 10th Conference on Soil Mechanics and Geotechnical Engineering.Chongqing:Chongqing University Press,2007:604-608.
[8]陈魁.试验设计与分析[M].北京:清华大学出版社,1996.Chen Kui.Design and Analysis of Experiments[M].Beijing:Tsinghua University Press,1996.
[9]孙景江,江近仁.与规范反应谱对应的金井清谱的谱参数[J].世界地震工程,1990,8(1):42-48.Sun Jingjiang,Jiang Jinren.Spectrum parameter of Kanai-Tajimi spectrum corresponding to code response spectrum[J].World Earthquake Engi-neering,1990,8(1):42-48.
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