土层非线性地震反应分析方法及其检验
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摘要
针对现行土层地震反应方法在大震情况不适用的问题,基于所提出的指数形式土体动力本构模型(UE模型),结合时空交叠积分格式和多次透射边界条件,提出了一种新的一维土层非线性地震反应分析方法.利用共振柱试验的结果检验了UE模型的可靠性,并利用该方法对唐山响嘡三维强震台阵的资料进行了计算,通过对地表加速度时程和放大系数以及土层阻尼特性的计算结果进行分析,可知该方法较等效线性化方法更为合理可靠.检验结果表明该方法能够较好地反应土体在强震作用下的非线性特性,可用于土层地震反应分析计算.
The current method used to analyze the seismic response of soil layers is inappropriate for forces in strong earthquakes.A one-dimensional method for seismic response analysis of nonlinear soil layers was proposed.It is a constitutive model of soil dynamics with an exponential form,combining a time-space overlapping integration scheme and the multi-transmitting artificial boundary condition.This emerged from a UE model,and its reliability was verified by the results of resonant column tests.The new method was used with the strong motions recorded by the Xiangtang three-dimensional strong motion array in Tangshan.By analyzing the results of time histories and amplification factors for ground acceleration and the results of damping characteristic of soil layers,the conclusion can be drawn that the new method is more reasonable and reliable than the equivalent linearization method.The test results indicated that the method can simulate the nonlinear characteristics of soil layers experiencing heavy thrusts,and it can be applied to the analysis of seismic response in soil layers.
The current method used to analyze the seismic response of soil layers is inappropriate for forces in strong earthquakes.A one-dimensional method for seismic response analysis of nonlinear soil layers was proposed.It is a constitutive model of soil dynamics with an exponential form,combining a time-space overlapping integration scheme and the multi-transmitting artificial boundary condition.This emerged from a UE model,and its reliability was verified by the results of resonant column tests.The new method was used with the strong motions recorded by the Xiangtang three-dimensional strong motion array in Tangshan.By analyzing the results of time histories and amplification factors for ground acceleration and the results of damping characteristic of soil layers,the conclusion can be drawn that the new method is more reasonable and reliable than the equivalent linearization method.The test results indicated that the method can simulate the nonlinear characteristics of soil layers experiencing heavy thrusts,and it can be applied to the analysis of seismic response in soil layers.
引文
[1]胡聿贤.地震工程学[M].2版.北京:地震出版社,2006:222-227.
[2]齐文浩,薄景山.土层地震反应等效线性化方法综述[J].世界地震工程,2007,23(4):221-226.QI Wenhao,BO Jingshan.Summarization on equivalent lin-ear method of seismic responses for soil layers[J].WorldEarthquake Engineering,2007,23(4):221-226.
[3]张克绪,谢君斐.土动力学[M].北京:地震出版社,1989:24-25.
[4]齐文浩.土层非线性地震反应分析方法研究[D].哈尔滨:中国地震局工程力学研究所,2008:27-66.QI Wenhao.The study on method of seismic response analy-sis of nonlinear soil layers[D].Harbin:Institute of engi-neering mechanics,China Earthquake Administration,2008:27-66.
[5]石兆吉.土壤的动剪切模量和阻尼比[M]//地震小区划:理论与实践.北京:地震出版社,1989.
[6]廖振鹏.工程波动理论导论[M].2版.北京:科学出版社,2002:156-162.
[7]金星,孔戈,丁海平.水平成层场地地震反应非线性分析[J].地震工程与工程振动,2004,24(3):38-43.JIN Xing,KONG Ge,DING Haiping.Nonlinear seismic re-sponse analysis of horizontal layered site[J].EarthquakeEngineering and Engineering Vibration,2004,24(3):38-43.
[8]HUANG Hueychu,SHIEH Chiesong,CHIU Hungchie.Linear and nonlinear behaviors of soft layers using lotungdownhole array in taiwan[J].Terrestrial,Atmospheric andOceanic Sciences,2001,12(3):503-524.
[9]JOYNER W B,CHEN A T F.Calculation of nonlinearground response in earthquakes[J].Bulletin of the Seismo-logical Society of America,1975,65(5):1315-1330.
[10]BONILLA L F,STEIDL J H,GARIEL J C,et al.Bore-hole response studies at the Garner Valley Downhole Ar-ray,southern California[J].Bulletin of the SeismologicalSociety of America,2002,92(8):3165-3179.
[11]周雍年,谢礼立,章文波,等.研究局部场地条件对地震动影响的响嘡遥测台阵[J].地震工程与工程振动,2005,25(6):1-4.ZHOUYongnian,XIE Lili,ZHANG Wenbo,et al.Xiang-tang remote array for studying effects of surface soil condi-tions on seismic motion[J].Earthquake Engineering andEngineering Vibration,2005,26(6):1-4.
[2]齐文浩,薄景山.土层地震反应等效线性化方法综述[J].世界地震工程,2007,23(4):221-226.QI Wenhao,BO Jingshan.Summarization on equivalent lin-ear method of seismic responses for soil layers[J].WorldEarthquake Engineering,2007,23(4):221-226.
[3]张克绪,谢君斐.土动力学[M].北京:地震出版社,1989:24-25.
[4]齐文浩.土层非线性地震反应分析方法研究[D].哈尔滨:中国地震局工程力学研究所,2008:27-66.QI Wenhao.The study on method of seismic response analy-sis of nonlinear soil layers[D].Harbin:Institute of engi-neering mechanics,China Earthquake Administration,2008:27-66.
[5]石兆吉.土壤的动剪切模量和阻尼比[M]//地震小区划:理论与实践.北京:地震出版社,1989.
[6]廖振鹏.工程波动理论导论[M].2版.北京:科学出版社,2002:156-162.
[7]金星,孔戈,丁海平.水平成层场地地震反应非线性分析[J].地震工程与工程振动,2004,24(3):38-43.JIN Xing,KONG Ge,DING Haiping.Nonlinear seismic re-sponse analysis of horizontal layered site[J].EarthquakeEngineering and Engineering Vibration,2004,24(3):38-43.
[8]HUANG Hueychu,SHIEH Chiesong,CHIU Hungchie.Linear and nonlinear behaviors of soft layers using lotungdownhole array in taiwan[J].Terrestrial,Atmospheric andOceanic Sciences,2001,12(3):503-524.
[9]JOYNER W B,CHEN A T F.Calculation of nonlinearground response in earthquakes[J].Bulletin of the Seismo-logical Society of America,1975,65(5):1315-1330.
[10]BONILLA L F,STEIDL J H,GARIEL J C,et al.Bore-hole response studies at the Garner Valley Downhole Ar-ray,southern California[J].Bulletin of the SeismologicalSociety of America,2002,92(8):3165-3179.
[11]周雍年,谢礼立,章文波,等.研究局部场地条件对地震动影响的响嘡遥测台阵[J].地震工程与工程振动,2005,25(6):1-4.ZHOUYongnian,XIE Lili,ZHANG Wenbo,et al.Xiang-tang remote array for studying effects of surface soil condi-tions on seismic motion[J].Earthquake Engineering andEngineering Vibration,2005,26(6):1-4.
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