金佛山混凝土面板堆石坝地震反应3-D分析
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摘要
基于等效线性模型,采用三维非线性动力有限元法对拟建金佛山混凝土面板堆石坝进行了地震动力反应分析,重点研究了坝体在地震荷载作用下的加速度反应、动应力反应、地震永久变形的规律和分布。计算结果表明:坝顶附近加速度反应较大,应采取相应的抗震工程措施;坝体动应力反应较小;坝体残余变形不大;大坝整体抗震性能较好,满足给定地震下的抗震安全性要求。
Based on the equivalent linear model,3-D nonlinear dynamic finite element method is used in seismic dynamic response analysis of Jinfo Mountain CFRD(Concrete Faced Rockfill Dam).The response of acceleration,dynamic stress,the regular pattern and distribution of permanent deformation under seismic loads are studied.The results show that the downstream slope near the crest has larger acceleration response,it should be taken appropriate anti-seismic engineering measures;the reaction of dynamic stress and dynamic shear stress for dam body is very little;and the permanent deformation for dam body is not large.The overall anti-seismic performance of the dam is good enough to meet the anti-seismic stability requirements under the given earthquake.
Based on the equivalent linear model,3-D nonlinear dynamic finite element method is used in seismic dynamic response analysis of Jinfo Mountain CFRD(Concrete Faced Rockfill Dam).The response of acceleration,dynamic stress,the regular pattern and distribution of permanent deformation under seismic loads are studied.The results show that the downstream slope near the crest has larger acceleration response,it should be taken appropriate anti-seismic engineering measures;the reaction of dynamic stress and dynamic shear stress for dam body is very little;and the permanent deformation for dam body is not large.The overall anti-seismic performance of the dam is good enough to meet the anti-seismic stability requirements under the given earthquake.
引文
[1]杨泽艳,周建平,蒋国澄,等.中国混凝土面板堆石坝的发展[J].水力发电,2011,37(2):18-23.Yang Zeyan,Zhou Jianping,Jiang Guocheng,et al.Developmentof concrete faced rockfill dam in China[J].Water Power,2011,37(2):18-23.
[2]Duncan J M,Byrne P,Wong K,et al.Stress-Strain and Bulk Modu-lus Parameters for Finite Element Analysis of Stress and Movementsin Soils Masses[R].California:University of California,1980.
[3]顾淦臣,沈长松,岑威钧.土石坝地震工程学[M].北京:中国水利水电出版社,2009.Gu Ganchen,Shen Changsong,Cen Weijun.Earthquake Engi-neering for Earthrock Dams[M].Beijing:China Water PowerPress,2009.
[4]四川大学水利水电学院,重庆市水利电力建筑勘测设计研究院.重庆市南川区金佛山工程堆石坝材料试验研究[R].重庆:重庆市水利电力建筑勘测设计研究院,2012.Scool of Water Resource and Hydropower,Sichuan University,Chongqing Survey and Design Institute of Water Resources,Elec-tric Power and Architecture.Experimental Research on JinfoMountain Concrete Faced Rockfill Dam[R].Chongqing:Chongqing Surveying and Design Institute of Water Resources,E-lectric Power and Architecture,2012.
[5]Newmark N M.Effects of earthquakes on dams and embankments[J].Geotechnique,1965,15(2):139-160.
[6]Serff N,Seed H B,Markdisi F I,et al.Earthquake Induced De-formation of Earth Dams[R].California:University of California,Berkeley,1976.
[7]沈珠江,徐刚.堆石料的动力变形特性[J].水利水运科学研究,1996(6):143-150.Shen Zhujiang,Xu Gang.Deformation behavior of rock materialsunder cyclic loading[J].Hydro-Science and Engineering,1996(6):143-150.
[8]重庆市地震工程研究所.重庆市南川金佛山水利工程建设场地地震安全性评价报告[R].重庆:重庆市地震工程研究所,2009.Chongqing Institute of Earthquake Engineering.Evaluation on Seis-mic Safety in the Construction Field on Jinfo Mountain HydraulicEngineering[R].Chongqing:Chongqing Institute of EarthquakeEngineering,2009.
[9]章为民,陈生水.紫坪铺面板堆石坝汶川地震永久变形实测结果分析[J].水力发电,2010,36(8):51-53.Zhang Weimin,Chen Shengshui.Analysis on permanent deforma-tion monitoring data of Zipingpu concrete faced rockfill[J].WaterPower,2010,36(8):51-53.
[10]赵剑明,常亚屏,陈宁.强震区高混凝土面板堆石坝地震残余变形与动力稳定分析[J].岩石力学与工程学报,2004,23(增刊1):4547-4552.Zhao Jianming,Chang Yaping,Chen Ning.Study on earthquake-induced permanent deformation and dynamic stability of high con-crete-faced rockfill dam[J].Chinese Journal of Rock Mechanicsand Engineering,2004,23(supp1):4547-4552.
[11]李红军,迟世春,钟红,等.考虑土料动力特性参数围压依赖性的高土石坝动力反应分析[J].水利学报,2007,38(8):938-943.Li Hongjun,Chi Shichun,Zhong Hong,et al.Dynamic responseanalysis for high rockfill dam considering the dependency of materi-al dynamic properties on confining pressure[J].Shuili Xuebao,2007,38(8):938-943.
[12]王玲玲,何蕴龙,费文平.水牛家心墙堆石坝地震永久变形及液化分析[J].岩土力学,2004,25(1):165-168.Wang Lingling,He Yunlong,Fei Wenping.Analysis of earthquakeinduced liquefaction and permanent deformation of Shuiniujia cen-tral core rock-fill dam[J].Rock and Soil Mechanics,2004,25(1):165-168.
[2]Duncan J M,Byrne P,Wong K,et al.Stress-Strain and Bulk Modu-lus Parameters for Finite Element Analysis of Stress and Movementsin Soils Masses[R].California:University of California,1980.
[3]顾淦臣,沈长松,岑威钧.土石坝地震工程学[M].北京:中国水利水电出版社,2009.Gu Ganchen,Shen Changsong,Cen Weijun.Earthquake Engi-neering for Earthrock Dams[M].Beijing:China Water PowerPress,2009.
[4]四川大学水利水电学院,重庆市水利电力建筑勘测设计研究院.重庆市南川区金佛山工程堆石坝材料试验研究[R].重庆:重庆市水利电力建筑勘测设计研究院,2012.Scool of Water Resource and Hydropower,Sichuan University,Chongqing Survey and Design Institute of Water Resources,Elec-tric Power and Architecture.Experimental Research on JinfoMountain Concrete Faced Rockfill Dam[R].Chongqing:Chongqing Surveying and Design Institute of Water Resources,E-lectric Power and Architecture,2012.
[5]Newmark N M.Effects of earthquakes on dams and embankments[J].Geotechnique,1965,15(2):139-160.
[6]Serff N,Seed H B,Markdisi F I,et al.Earthquake Induced De-formation of Earth Dams[R].California:University of California,Berkeley,1976.
[7]沈珠江,徐刚.堆石料的动力变形特性[J].水利水运科学研究,1996(6):143-150.Shen Zhujiang,Xu Gang.Deformation behavior of rock materialsunder cyclic loading[J].Hydro-Science and Engineering,1996(6):143-150.
[8]重庆市地震工程研究所.重庆市南川金佛山水利工程建设场地地震安全性评价报告[R].重庆:重庆市地震工程研究所,2009.Chongqing Institute of Earthquake Engineering.Evaluation on Seis-mic Safety in the Construction Field on Jinfo Mountain HydraulicEngineering[R].Chongqing:Chongqing Institute of EarthquakeEngineering,2009.
[9]章为民,陈生水.紫坪铺面板堆石坝汶川地震永久变形实测结果分析[J].水力发电,2010,36(8):51-53.Zhang Weimin,Chen Shengshui.Analysis on permanent deforma-tion monitoring data of Zipingpu concrete faced rockfill[J].WaterPower,2010,36(8):51-53.
[10]赵剑明,常亚屏,陈宁.强震区高混凝土面板堆石坝地震残余变形与动力稳定分析[J].岩石力学与工程学报,2004,23(增刊1):4547-4552.Zhao Jianming,Chang Yaping,Chen Ning.Study on earthquake-induced permanent deformation and dynamic stability of high con-crete-faced rockfill dam[J].Chinese Journal of Rock Mechanicsand Engineering,2004,23(supp1):4547-4552.
[11]李红军,迟世春,钟红,等.考虑土料动力特性参数围压依赖性的高土石坝动力反应分析[J].水利学报,2007,38(8):938-943.Li Hongjun,Chi Shichun,Zhong Hong,et al.Dynamic responseanalysis for high rockfill dam considering the dependency of materi-al dynamic properties on confining pressure[J].Shuili Xuebao,2007,38(8):938-943.
[12]王玲玲,何蕴龙,费文平.水牛家心墙堆石坝地震永久变形及液化分析[J].岩土力学,2004,25(1):165-168.Wang Lingling,He Yunlong,Fei Wenping.Analysis of earthquakeinduced liquefaction and permanent deformation of Shuiniujia cen-tral core rock-fill dam[J].Rock and Soil Mechanics,2004,25(1):165-168.
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