基于改进一次二阶矩法的砂土液化判别方法
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摘要
通过对改进一次二阶矩可靠性分析方法进行研究,提出了一种基于标准贯入击数极限状态方程的地震液化可靠度评估方法,并用Matlab 7.0编制了相应的地震液化概率判别程序。用该可靠性分析方法对1976年河北唐山大地震的资料进行了液化概率分析,并与实测值和规范判别法计算结果进行了对比。结果表明:该方法具有可行性和精确性,为砂土液化势评估提供了一种有效的新方法。
An improved linear second order moment method for seismic sandy soil liquefaction,which was based on the limit state equation of blow count of standard penetration test(SPT),was established through the research on reliability analyses of improved linear second order moment method.The corresponding programs for computing liquefaction probability were compiled by Matlab7.0.The results of liquefaction probability analysis for Tangshan earthquake,Hebei Province in 1976 were compared with the measurements and requirements of the building codes discrimination.The results show that this method is feasible and accurate,and it is proved to be an efficient method to evaluate indeterminacy sandy soil liquefaction.
An improved linear second order moment method for seismic sandy soil liquefaction,which was based on the limit state equation of blow count of standard penetration test(SPT),was established through the research on reliability analyses of improved linear second order moment method.The corresponding programs for computing liquefaction probability were compiled by Matlab7.0.The results of liquefaction probability analysis for Tangshan earthquake,Hebei Province in 1976 were compared with the measurements and requirements of the building codes discrimination.The results show that this method is feasible and accurate,and it is proved to be an efficient method to evaluate indeterminacy sandy soil liquefaction.
引文
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[9]高大钊.土力学可靠性原理[M].北京:中国建筑工业出版社,1989.GAO Da-zhao.Reliability Theory of Soil Mechanics[M].Beijing:China Architecture&BuildingPress,1989.
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[12]刘恢先.唐山大地震震害[M].北京:地震出版社,1984.LI U Hui-xian.Seismic Hazard in Tangshan Earth-quake[M].Beijing:Earthquake Publishing House,1984.
[13]曹振中.基于可靠性理论的砂土液化判别方法研究[D].哈尔滨:中国地震局工程力学研究所,2006:1-10.CAO Zhen-zhong.Assessment Method of Sandy SoilLiquefaction Based on Reliability Theory[D].Har-bin:Institute of Engineering Mechanics of ChinaEarthquake Administration,2006:1-10.
[2]刘利艳.蒙特卡罗数值模拟方法在砂土液化分析中的应用[D].广州:华南理工大学,2005.LI U Li-yan.Application of Monte Carlo Si mulationMethod in Sandy Soil Liquefaction Analysis[D].Guangzhou:South China University of Science andTechnology,2005.
[3]希德H B,伊德里斯I M.地震中的地面运动和土的液化[M].张在明,沈小克,译.北京:地震出版社,1988.SEED H B,IDRISS I M.Ground Movement in Seis-mic and Soil Li-quefaction[M].Translated byZHANG Zai-ming,SHEN Xiao-ke.Beijing:Earth-quake Publishing House,1988.
[4]陈红兵.基于JC法的砂土液化判别方法及其应用研究[D].广州:华南理工大学,2007.CHEN Hong-bing.Assessment Method of Sandy SoilLiquefaction and Its Application Based on JC Method[D].Guangzhou:South China University of Scienceand Technology,2007.
[5]童立元,王斌,刘义怀.地震地基液化大变形对桥梁桩基危害性三维数值分析[J].交通运输工程学报,2007,7(3):91-94.TONG Li-yuan,WANG Bin,LI U Yi-huai.3-D Nu-merical Analysis of Large Subsoil Liquefaction Dis-tortion Influence Resultedfrom Earthquake on BridgePile Foundation[J].Journal of Traffic and Transpor-tation Engineering,2007,7(3):91-94.
[6]习红娟.石灰土处理膨胀土路基施工技术[J].筑路机械与施工机械化,2005,22(12):46-48.XI Hong-juan.Construction Technique of ProcessingExpansive Soil Subgrade with Li me Soil[J].RoadMachinery&Construction Mechanization,2005,22(12):46-48.
[7]李又云,刘保健,谢永利.饱和软土地基固结沉降的现场测试[J].长安大学学报:自然科学版,2006,26(6):1-5.LI You-yun,LI U Bao-jian,XIE Yong-li.Spot Test ofConsolidation Settlement of Soft Clay Foundation[J].Journal of Chang an University:Natural ScienceEdition,2006,26(6):1-5.
[8]白涛,齐晓迪,袁树基,等.砂土地基加固方法的工程应用[J].建筑科学与工程学报,2008,25(2):116-120.BAI Tao,QI Xiao-di,YUAN Shu-ji,et al.Engineer-ing Application of Reinforcement Method of SandFoundation[J].Journal of Architecture and Civil En-gineering,2008,25(2):116-120.
[9]高大钊.土力学可靠性原理[M].北京:中国建筑工业出版社,1989.GAO Da-zhao.Reliability Theory of Soil Mechanics[M].Beijing:China Architecture&BuildingPress,1989.
[10]GBJ 50011—2001,建筑抗震设计规范[S].GBJ 50011—2001,Code for Seismic Design of Build-ings[S].
[11]JUANG C H,CHON CJ,ANDURS R D.Risk-basedLiquefaction Potential Evaluation Using StandardPenetration Tests[J].Canadian Geotechnical Jour-nal,2000,37(6):1195-1208.
[12]刘恢先.唐山大地震震害[M].北京:地震出版社,1984.LI U Hui-xian.Seismic Hazard in Tangshan Earth-quake[M].Beijing:Earthquake Publishing House,1984.
[13]曹振中.基于可靠性理论的砂土液化判别方法研究[D].哈尔滨:中国地震局工程力学研究所,2006:1-10.CAO Zhen-zhong.Assessment Method of Sandy SoilLiquefaction Based on Reliability Theory[D].Har-bin:Institute of Engineering Mechanics of ChinaEarthquake Administration,2006:1-10.
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