CONE模型与地基动力液化的非线性有效应力分析
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摘要
在分析建筑物地基的地震(或振动)液化时,为了简化分析土壤-地基的动力相互作用,引入Cone模型,在总应力分析的方法基础上,结合了Martin等提出的孔隙水压力发展模型,并且考虑土壤发生液化的动力非线性过程中材料刚度退化的影响,提出了可以直接求解各区域的孔隙水压力的有效应力简化分析法,并进行液化可能性判别。
The modulus degeneration of sand is thought as one of characters of dynamical nonlinear to analyze the seismic liquefaction of subsoil of building. Based on the total stress method ,a cone model theory by Wolf and Meek, combined with the model of pore water pressure generation presented by Martin ,is introduced to simplify the interaction of soil-structure and calculate the dynamical stress field of subsoil , so that pore water pressure under the building can be evaluated directly, an effective stress method is suggested to evaluate liquefaction potential of building抯 subsoil.
The modulus degeneration of sand is thought as one of characters of dynamical nonlinear to analyze the seismic liquefaction of subsoil of building. Based on the total stress method ,a cone model theory by Wolf and Meek, combined with the model of pore water pressure generation presented by Martin ,is introduced to simplify the interaction of soil-structure and calculate the dynamical stress field of subsoil , so that pore water pressure under the building can be evaluated directly, an effective stress method is suggested to evaluate liquefaction potential of building抯 subsoil.
引文
[1]门福录,崔杰,景立平等.建筑物饱和砂土地基地震液化判别的简化分析方法[J],水利学报,1998,(5):33-42.
[2]陈文化,门福录.有建筑物存在的饱和砂土地基液化振动台模拟实验研究[J].地震工程与工程振动,1998,18(4):54-60.
[3]YoshiakiYoshimi, koohjiTokimatsu.Settlement of buildings on saturated sand during earthquakes[J].Soil andFoundations,1977,17(1):1-20.
[4]刘惠珊,乔太平.有基础作用时饱和砂层的液化特性[A].“地基与工业建筑抗震”[M].北京:地震出版社,1984.
[5]Dobry.Centrifuge of shallow foundations on saturated sand during earthquake[A].Proc.4thJapan-U.S workshop, on earthquake,resistant design of lifeline facties and countermeasures for soil liquefaction[C].BalkemaRotterdam,1995,(1):493-508.
[6]陈文化,门福录.非均质地基的地震有效应力分析法[J],水利学报,2000,(10):54-60.
[7]FinnW D.Analysis of pore water pressure in seismic centrifuge tests[J].SoilDynamics and liquefaction,1987,10(3):40.
[8]MeekJ W WolfJ P Cone models for homogeneous soil[J],J.Geot.Eng.ASCE,1992,(118):667-685.
[9]Meek,J.W. andWolf,J.P.,Why cone models can represent the elastic half-space[J].EESD,1993,(22):692-698.
[10]张克绪,谢君斐,土动力学[M].北京:地震出版社,1989.
[2]陈文化,门福录.有建筑物存在的饱和砂土地基液化振动台模拟实验研究[J].地震工程与工程振动,1998,18(4):54-60.
[3]YoshiakiYoshimi, koohjiTokimatsu.Settlement of buildings on saturated sand during earthquakes[J].Soil andFoundations,1977,17(1):1-20.
[4]刘惠珊,乔太平.有基础作用时饱和砂层的液化特性[A].“地基与工业建筑抗震”[M].北京:地震出版社,1984.
[5]Dobry.Centrifuge of shallow foundations on saturated sand during earthquake[A].Proc.4thJapan-U.S workshop, on earthquake,resistant design of lifeline facties and countermeasures for soil liquefaction[C].BalkemaRotterdam,1995,(1):493-508.
[6]陈文化,门福录.非均质地基的地震有效应力分析法[J],水利学报,2000,(10):54-60.
[7]FinnW D.Analysis of pore water pressure in seismic centrifuge tests[J].SoilDynamics and liquefaction,1987,10(3):40.
[8]MeekJ W WolfJ P Cone models for homogeneous soil[J],J.Geot.Eng.ASCE,1992,(118):667-685.
[9]Meek,J.W. andWolf,J.P.,Why cone models can represent the elastic half-space[J].EESD,1993,(22):692-698.
[10]张克绪,谢君斐,土动力学[M].北京:地震出版社,1989.
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