高心墙堆石坝地震动力特性及抗震极限分析
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摘要
虽然土石坝具有较好的抗震性能,而且一些高土石坝还经过了强震考验,但土石坝的极限抗震能力仍是人们关心的问题.数值模型方法是预测大坝地震动力反应和进行地震安全评价的有效工具.本文采用三维有限元方法分析了某高心墙堆石坝的地震动力特性,探讨了大坝地震破坏评价标准,并在此基础上开展了大坝极限抗震能力研究.根据大坝动力响应的特点,分析了可行的抗震工程措施.
Earthquake disaster avoiding is very important for the safety of earth-rockfill dams.It is accepted that rockfill dams are with nicer aseismic behavior.Although some high rockfill dams were tested by strong earthquakes,the limit aseismic capacity of a rockfill dam is still concerned.Numerical model is a useful method to estimate the dynamic response and to analyze the security of a dam during earthquake.3-D FEM method is used to analyze the seismic dynamic behavior of a high earth core rockfill dam.The earthquake destructive criterion of the dam is investigated,and its limit aseismic capacity is studied.According to the characteristic of dynamic response of the dam,viable aseismic measures are discussed.
Earthquake disaster avoiding is very important for the safety of earth-rockfill dams.It is accepted that rockfill dams are with nicer aseismic behavior.Although some high rockfill dams were tested by strong earthquakes,the limit aseismic capacity of a rockfill dam is still concerned.Numerical model is a useful method to estimate the dynamic response and to analyze the security of a dam during earthquake.3-D FEM method is used to analyze the seismic dynamic behavior of a high earth core rockfill dam.The earthquake destructive criterion of the dam is investigated,and its limit aseismic capacity is studied.According to the characteristic of dynamic response of the dam,viable aseismic measures are discussed.
引文
[1]顾淦臣.土石坝地震工程[M].南京:河海大学出版社,1989.(GU Gan-chen.Seismic engineering of earth-rockfill dam[M].Nanjing:Hohai University Press,1989.(in Chinese))
[2]陈生水,霍家平,章为民.“5.12”汶川地震对紫坪铺混凝土面板坝的影响及原因分析[J].岩土工程学报,2008,30(6):795-801.(CHEN Sheng-shui,HUO Jia-ping,ZHANG Wei-min.Analysis of effects of“5.12”Wenchuan Earthquakeon Zipingpu Concrete Face Rockfill Dam[J].Chinese Journal of Geotechnical Engineering,2008,30(6):795-801.(inChinese))
[3]张锐,迟世春,林皋,等.高土石坝坝坡抗震稳定分析的研究[J].水力发电学报,2008,27(4):83-88.(ZHANG Rui,CHI Shi-chun,LI N Gao,et al.Research on slope seismic stability analysis of high earth-rock dams[J].Journal of Hydroelectric Engineering,2008,27(4):83-88.(in Chinese))
[4]HARDI N B O,DRNEVICHV P.Shear modulus and damping in soil:designing equations and curves[J].Journal of the SoilMechanics and Foundations Division,ASCE,1972,98(7):667-692.
[5]沈珠江,黄锦德,王钟宁.陡河土坝的地震液化及变形分析[J].水利水运科学研究,1984(1):52-61.(SHEN Zhu-jiang,HUANG Jin-de,WANG Zhong-ning.Seismic liquefaction and deformation analysis on Douhe earth dam[J].Journal ofNanjing Hydraulic Research Institute,1984(1):52-61.(in Chinese))
[6]朱百里,沈珠江.计算土力学[M].上海:上海科技出版社,1990.(ZHU Bai-li,SHEN Zhu-jiang.Computational soilmechanics[M].Shanghai:Shanghai Scientific and Technical Publishers,1990.(in Chinese))
[7]SEED HB,IDRISS I M.Simplified procedures for evaluating soil liquefaction potential[J].J Geot Eng,ASCE,1971(9):1249-1273.
[8]沈凤生,潘恕,甘宪章.小浪底土石坝三维地震反应分析[J].人民黄河,1995(6):35-39.(SHEN Feng-sheng,PAN Ru,GAN Xian-zhang.3-D seismic response analysis on Xiaolangdi Rockfill Dam[J].YellowRiver,1995(6):35-39.(in Chinese))
[9]孔宪京,邹德高,邓学晶,等.高土石坝综合抗震措施及其效果的验算[J].水利学报,2006,37(12):1489-1495.(KONG Xian-jing,ZOU De-gao,DENG Xue-jing,et al.Comprehensive earthquake resistant measure of high earth rockfilldams and effectiveness verification[J].Journal of Hydraulic Engineering,2006,37(12):1489-1495.(in Chinese))
[2]陈生水,霍家平,章为民.“5.12”汶川地震对紫坪铺混凝土面板坝的影响及原因分析[J].岩土工程学报,2008,30(6):795-801.(CHEN Sheng-shui,HUO Jia-ping,ZHANG Wei-min.Analysis of effects of“5.12”Wenchuan Earthquakeon Zipingpu Concrete Face Rockfill Dam[J].Chinese Journal of Geotechnical Engineering,2008,30(6):795-801.(inChinese))
[3]张锐,迟世春,林皋,等.高土石坝坝坡抗震稳定分析的研究[J].水力发电学报,2008,27(4):83-88.(ZHANG Rui,CHI Shi-chun,LI N Gao,et al.Research on slope seismic stability analysis of high earth-rock dams[J].Journal of Hydroelectric Engineering,2008,27(4):83-88.(in Chinese))
[4]HARDI N B O,DRNEVICHV P.Shear modulus and damping in soil:designing equations and curves[J].Journal of the SoilMechanics and Foundations Division,ASCE,1972,98(7):667-692.
[5]沈珠江,黄锦德,王钟宁.陡河土坝的地震液化及变形分析[J].水利水运科学研究,1984(1):52-61.(SHEN Zhu-jiang,HUANG Jin-de,WANG Zhong-ning.Seismic liquefaction and deformation analysis on Douhe earth dam[J].Journal ofNanjing Hydraulic Research Institute,1984(1):52-61.(in Chinese))
[6]朱百里,沈珠江.计算土力学[M].上海:上海科技出版社,1990.(ZHU Bai-li,SHEN Zhu-jiang.Computational soilmechanics[M].Shanghai:Shanghai Scientific and Technical Publishers,1990.(in Chinese))
[7]SEED HB,IDRISS I M.Simplified procedures for evaluating soil liquefaction potential[J].J Geot Eng,ASCE,1971(9):1249-1273.
[8]沈凤生,潘恕,甘宪章.小浪底土石坝三维地震反应分析[J].人民黄河,1995(6):35-39.(SHEN Feng-sheng,PAN Ru,GAN Xian-zhang.3-D seismic response analysis on Xiaolangdi Rockfill Dam[J].YellowRiver,1995(6):35-39.(in Chinese))
[9]孔宪京,邹德高,邓学晶,等.高土石坝综合抗震措施及其效果的验算[J].水利学报,2006,37(12):1489-1495.(KONG Xian-jing,ZOU De-gao,DENG Xue-jing,et al.Comprehensive earthquake resistant measure of high earth rockfilldams and effectiveness verification[J].Journal of Hydraulic Engineering,2006,37(12):1489-1495.(in Chinese))
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