土体动力反应分析方法的研究
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摘要
【目的】比较土体动力反应分析方法的优劣,并指出其研究发展的方向。【方法】以动力固结理论和瞬态动力学理论为基础,将物态本构模型引入到动力反应与动力固结相耦合、静应力和动应力变化相耦合、孔压的产生、扩散与消散相耦合的瞬态动力固结方程中,以砂土路基作为数值分析对象,比较了物态本构模型、孔压模型和等效粘弹性分析孔压特性和残余变形特性的差异。【结果】基于孔压模型的等效粘弹性土体动力反应分析是一个平均过程,体现不出某一时刻土体的实际性态,而基于物态本构模型的瞬态动力反应分析反映了孔压的瞬态变化的波动,体现了土体任意时刻的真实性态。【结论】以动力固结和瞬态动力学理论为基础的反应地震过程中,土体物态变化的动力反应分析方法将动力反应与动力固结耦合在一起,能够真正地反映实际土体的真实性态,是一种有发展前景的科学方法。
【Objective】 This study compared the dynamic response analysis method of soils,and pointed out the direction of the research development.【Method】 The governing equation on the basis of transient dynamic theory was established,by drawing into it the effective stress and physical states dynamic constitutive relationship and coupling the dynamic response and dynamic consolidation,static stress and dynamic stress,pore water pressure generation,pore water pressure diffusion,dissipation with each other so as to simulate the true process of stress-strain response of soil mass.The physical states,pore water and equivalent viscidity elasticity constitutive relationship ansysing pore water pressure and remainder distortion characteristic difference were compared.【Result】 Dynamic response analysis method of soils based on pore water model reflected average process,not representing actual speciality of soils at any time,but analysis method of the transient dynamic response showed pore water pressure transient wave,representing soils actual speciality.【Conclusion】 The dynamic response analysis method,on the basis of dynamic consolidation and transient dynamic theory,coupling with the dynamic response and dynamic consolidation,true imaging soils actual speciality,has a bright prospect for development.
【Objective】 This study compared the dynamic response analysis method of soils,and pointed out the direction of the research development.【Method】 The governing equation on the basis of transient dynamic theory was established,by drawing into it the effective stress and physical states dynamic constitutive relationship and coupling the dynamic response and dynamic consolidation,static stress and dynamic stress,pore water pressure generation,pore water pressure diffusion,dissipation with each other so as to simulate the true process of stress-strain response of soil mass.The physical states,pore water and equivalent viscidity elasticity constitutive relationship ansysing pore water pressure and remainder distortion characteristic difference were compared.【Result】 Dynamic response analysis method of soils based on pore water model reflected average process,not representing actual speciality of soils at any time,but analysis method of the transient dynamic response showed pore water pressure transient wave,representing soils actual speciality.【Conclusion】 The dynamic response analysis method,on the basis of dynamic consolidation and transient dynamic theory,coupling with the dynamic response and dynamic consolidation,true imaging soils actual speciality,has a bright prospect for development.
引文
[1]谢定义.土动力学[M].西安:西安交通大学出版社,1988:77-125.Xie D Y.Dynamical mechanics of soil[M].Xi’an:Jiaotong U-niversity of Xi’an Publishing Company,1988:77-125.(in Chi-nese)
[2]吴兴中,栾茂田,周小光.面板堆石坝动力分析方法比较研究[J].水利学报,2004(3):15-21.Wu X Z,Luan M T,Zhou X Q.Comparison of computationalresults of different dynamic analysis methods for concrete facedrock fill dam[J].Journal of Hydraulic Engineering,2004(3):15-21.(in Chinese)
[3]Zienkiewics O C,Chan A H C,Pastor M,et al.Computationalgeomechanics[M].England:Library of Congress Cataloging-in-Publication Data,1999.
[4]徐志英,沈珠江.地震液化的有效应力二维动力反应分析[J].华东水利学院学报,1981(3):34-52.Xu Z Y,Shen Z J.2-Ddynamic analysis of effective stresses ofseismic liquefaction[J].Journal of East China College of Hy-draulic Engineering,1981(3):34-52.(in Chinese)
[5]徐志英,周健.土坝地震孔隙水压力产生、扩散和消散的三维动力分析[J].地震工程和工程震动,1985(4):123-131.Xu Z Y,Zhou J.Generation,diffusion and dissipation of seismicpore water pressurein earth damby 3-Ddynamic analysis[J].Earthquake Engineering and Engineering Vibration Dec,1985(4):123-131.(in Chinese)
[6]盛虞,卢盛松,姜朴.土工建筑物动力固结的耦合振动分析[J].水利学报,1989(12):31-42.Sheng Y,Lu S S,Jiang P.Acoupling analysis method of earthstructures considering dynamic consolidation[J].Journal ofHydraulic Engineering,1989(12):31-42.(in Chinese)
[7]关飞,韩国城.有效应力动力分析方法的探讨[J].地震工程与工程振动,1988(12):54-65.Guan F,Han G C.Onthe effective stress method of dynamic a-nalysis[J].Earthquake Engineering and Engineering VibrationDec,1988(12):54-65.(in Chinese)
[8]朱百里,沈珠江.计算土力学[M].上海:上海科学技术出版社,1990:121-142.Zhu B L,Shen Z J.Computational geomechanics[M].Shang-hai:Shanghai Technology Publishing Company,1990:121-142.(in Chinese)
[9]谢定义,张建民.饱和砂土瞬态动力学特性与机理分析[M].西安:陕西科学技术出版社,1995:39-46.Xie D Y,Zhang J M.Study on transient theory of saturatedsand dynamics with applications[M].Xi’an:Shaanxi Technol-ogy Publishing Company,1995:39-46.(in Chinese)
[10]史宏彦.土体动力反应的瞬态有效应力分析方法及其计算程序的研究[D].西安:陕西机械学院,1987.Shi H Y.Method of soil dynamic response analysis on transi-ent effective stress and program[D].Xi’an:MechanismInsti-tute of Shaanxi,1987.(in Chinese)
[11]陈存礼.饱和砂土体有效应力物态地震反应分析方法的研究[D].西安:西安理工大学,2005.Chen C L.Research on seismic response analysis approach oneffective stress and physical statein saturated sand mass[D].Xi’an:Xi’an University of Technology,2005.(in Chinese)
[12]李宏儒,胡再强,陈存礼,等.基于物态本构模型的土体动力反应分析方法[J].岩土工程学报,2008(4):503-510.Li HR,Hu Z Q,Chen C L,et al.Approach of soil dynamic re-sponse analysis based on physical state constitutive relation-ship[J].Chinese Journal of Geotechnical Engineering,2008(4):503-510.(in Chinese)
[2]吴兴中,栾茂田,周小光.面板堆石坝动力分析方法比较研究[J].水利学报,2004(3):15-21.Wu X Z,Luan M T,Zhou X Q.Comparison of computationalresults of different dynamic analysis methods for concrete facedrock fill dam[J].Journal of Hydraulic Engineering,2004(3):15-21.(in Chinese)
[3]Zienkiewics O C,Chan A H C,Pastor M,et al.Computationalgeomechanics[M].England:Library of Congress Cataloging-in-Publication Data,1999.
[4]徐志英,沈珠江.地震液化的有效应力二维动力反应分析[J].华东水利学院学报,1981(3):34-52.Xu Z Y,Shen Z J.2-Ddynamic analysis of effective stresses ofseismic liquefaction[J].Journal of East China College of Hy-draulic Engineering,1981(3):34-52.(in Chinese)
[5]徐志英,周健.土坝地震孔隙水压力产生、扩散和消散的三维动力分析[J].地震工程和工程震动,1985(4):123-131.Xu Z Y,Zhou J.Generation,diffusion and dissipation of seismicpore water pressurein earth damby 3-Ddynamic analysis[J].Earthquake Engineering and Engineering Vibration Dec,1985(4):123-131.(in Chinese)
[6]盛虞,卢盛松,姜朴.土工建筑物动力固结的耦合振动分析[J].水利学报,1989(12):31-42.Sheng Y,Lu S S,Jiang P.Acoupling analysis method of earthstructures considering dynamic consolidation[J].Journal ofHydraulic Engineering,1989(12):31-42.(in Chinese)
[7]关飞,韩国城.有效应力动力分析方法的探讨[J].地震工程与工程振动,1988(12):54-65.Guan F,Han G C.Onthe effective stress method of dynamic a-nalysis[J].Earthquake Engineering and Engineering VibrationDec,1988(12):54-65.(in Chinese)
[8]朱百里,沈珠江.计算土力学[M].上海:上海科学技术出版社,1990:121-142.Zhu B L,Shen Z J.Computational geomechanics[M].Shang-hai:Shanghai Technology Publishing Company,1990:121-142.(in Chinese)
[9]谢定义,张建民.饱和砂土瞬态动力学特性与机理分析[M].西安:陕西科学技术出版社,1995:39-46.Xie D Y,Zhang J M.Study on transient theory of saturatedsand dynamics with applications[M].Xi’an:Shaanxi Technol-ogy Publishing Company,1995:39-46.(in Chinese)
[10]史宏彦.土体动力反应的瞬态有效应力分析方法及其计算程序的研究[D].西安:陕西机械学院,1987.Shi H Y.Method of soil dynamic response analysis on transi-ent effective stress and program[D].Xi’an:MechanismInsti-tute of Shaanxi,1987.(in Chinese)
[11]陈存礼.饱和砂土体有效应力物态地震反应分析方法的研究[D].西安:西安理工大学,2005.Chen C L.Research on seismic response analysis approach oneffective stress and physical statein saturated sand mass[D].Xi’an:Xi’an University of Technology,2005.(in Chinese)
[12]李宏儒,胡再强,陈存礼,等.基于物态本构模型的土体动力反应分析方法[J].岩土工程学报,2008(4):503-510.Li HR,Hu Z Q,Chen C L,et al.Approach of soil dynamic re-sponse analysis based on physical state constitutive relation-ship[J].Chinese Journal of Geotechnical Engineering,2008(4):503-510.(in Chinese)
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