乌东德拱坝非线性地震反应分析
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摘要
本文在计入坝、地基和库水动力相互作用的情况下,用LDDA(拉格朗日不连续变形分析)模拟拱坝横缝,粘弹性边界为吸能边界的拱坝地震输入模型计算乌东德拱坝非线性地震反应,研究无限地基辐射阻尼和拱坝横缝对坝体反应的影响,分析乌东德拱坝的静动力响应和拱坝横缝在地震作用下的张开情况,并将其计算成果与基于人工透射边界的时域显式有限元方法进行了比较分析。
The seismic responses of the Wudongde arch dam are studied by adopting an input model of arch dam earthquake with consideration of the dynamic dam-foundationwater interaction.With this model,employing LDDA(Lagrangian Discontinuous Deformation Analysis) for the simulation of transverse joints and the damping-spring boundaries for the absorption of out-transmitting scatter waves,the opening and closing of transverse joints under the earthquake motions as well as the effects of infinite foundation radiation damping and transverse joints are analyzed.This paper presents the simulation results and a comparison of the input model and time domain FEM.
The seismic responses of the Wudongde arch dam are studied by adopting an input model of arch dam earthquake with consideration of the dynamic dam-foundationwater interaction.With this model,employing LDDA(Lagrangian Discontinuous Deformation Analysis) for the simulation of transverse joints and the damping-spring boundaries for the absorption of out-transmitting scatter waves,the opening and closing of transverse joints under the earthquake motions as well as the effects of infinite foundation radiation damping and transverse joints are analyzed.This paper presents the simulation results and a comparison of the input model and time domain FEM.
引文
[1]DL5073-1997,水工建筑物抗震设计规范[S].Chinese standard code:Specifications for the seismic design of hydraulic structures[S].DL 5073-2000.(in Chinese)
[2]Chen Houqun,Tu Jin,Zhang Boyan.Study on seismic behavior of Xiaowan high arch dam[C].Commission International,Des GrandsBarrages,montreal,2003.
[3]Zhang Boyan,Chen Houqun,Li Deyu.The earthquake free field input model of arch dams with contraction joints and its engineeringapplication[C].ICOLD 75th Annual Meeting,Saint Petersburg,Russia,June 24~29,2007.
[4]刘云贺,张伯艳,陈厚群.拱坝输入模型中黏弹性边界与黏性边界的比较[J].水利学报,2006,37(6):758~763.Liu Yunhe,Zhang Boyan,Chen Houqun.Comparison of spring-viscous boundary with viscous boundary for arch dam seismic input model[J].Journal of Hydraulic Engineering,2006,37(6):758~763.(in Chinese)
[5]Anil K.Chopra.Earthquake analysis of arch dams:factors to be considered[C].The 14th World Conference on Earthquake Engineering,Beijing,China.October 12~17,2008.
[6]涂劲,陈厚群,张伯艳.高拱坝体系整体抗震安全评价方法研究[J].世界地震工程,2007,23(1):31~37.Tu Jin,Chen Houqun,Zhang Boyan.The method of holistic earthquake safety evaluation of a high arch dam system[J].World EarthquakeEngineering,2007,23(1):31~37.(in Chinese)
[7]Clough R W,Raphael J M,Mojtahed S.ADAP,A computer program for static and dynamic analysis of arch dams[R].Report No.EERC73/14.Earthquake Engineering Research Center,University of California,Berkeley.1973.
[2]Chen Houqun,Tu Jin,Zhang Boyan.Study on seismic behavior of Xiaowan high arch dam[C].Commission International,Des GrandsBarrages,montreal,2003.
[3]Zhang Boyan,Chen Houqun,Li Deyu.The earthquake free field input model of arch dams with contraction joints and its engineeringapplication[C].ICOLD 75th Annual Meeting,Saint Petersburg,Russia,June 24~29,2007.
[4]刘云贺,张伯艳,陈厚群.拱坝输入模型中黏弹性边界与黏性边界的比较[J].水利学报,2006,37(6):758~763.Liu Yunhe,Zhang Boyan,Chen Houqun.Comparison of spring-viscous boundary with viscous boundary for arch dam seismic input model[J].Journal of Hydraulic Engineering,2006,37(6):758~763.(in Chinese)
[5]Anil K.Chopra.Earthquake analysis of arch dams:factors to be considered[C].The 14th World Conference on Earthquake Engineering,Beijing,China.October 12~17,2008.
[6]涂劲,陈厚群,张伯艳.高拱坝体系整体抗震安全评价方法研究[J].世界地震工程,2007,23(1):31~37.Tu Jin,Chen Houqun,Zhang Boyan.The method of holistic earthquake safety evaluation of a high arch dam system[J].World EarthquakeEngineering,2007,23(1):31~37.(in Chinese)
[7]Clough R W,Raphael J M,Mojtahed S.ADAP,A computer program for static and dynamic analysis of arch dams[R].Report No.EERC73/14.Earthquake Engineering Research Center,University of California,Berkeley.1973.
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