高沥青混凝土心墙坝动力反应特性
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摘要
根据官帽舟水电站工程的实际情况,采用三维非线性有限元法,建立了官帽舟沥青混凝土心墙坝的三维有限元模型,仿真了大坝填筑和水库蓄水过程,在获得坝体静力场的基础上,计算分析了大坝在设计地震作用下的动力反应特性,获得了坝体及沥青心墙的加速度、速度、位移反应分布以及坝体单元的安全系数。计算结果表明,大坝在设计三向地震作用下的加速度、速度及位移反应分布符合一般规律,总体上沥青心墙的地震反应不大,且坝体各单元各时刻的安全系数均大于1,坝体在设计地震作用下是安全的。
According to the actual conditions of the Guanmaozhou hydropower station project,the three-dimensional nonlinear finite element method was used to establish a three-dimensional finite element model of the core rockfill dam with asphalt concrete in the Guanmaozhou station.The model simulated the processes of the dam filling and reservoir impounding.Based on the static field of the dam,the dynamic response characteristics of the dam under the design earthquake actions were analyzed.The distributions of acceleration response,velocity response,and displacement response of the core rockfill dam and the safety coefficient of the dam element were obtained.The results showed that the distributions of acceleration response,velocity response,and displacement response of the dam accord with the general law.Overall,the dynamic response of the asphalt concrete core to the earthquake is insignificant and the safety coefficient of each dam element is greater than 1 at all times,and thus the dam is safe under the design earthquake actions.
According to the actual conditions of the Guanmaozhou hydropower station project,the three-dimensional nonlinear finite element method was used to establish a three-dimensional finite element model of the core rockfill dam with asphalt concrete in the Guanmaozhou station.The model simulated the processes of the dam filling and reservoir impounding.Based on the static field of the dam,the dynamic response characteristics of the dam under the design earthquake actions were analyzed.The distributions of acceleration response,velocity response,and displacement response of the core rockfill dam and the safety coefficient of the dam element were obtained.The results showed that the distributions of acceleration response,velocity response,and displacement response of the dam accord with the general law.Overall,the dynamic response of the asphalt concrete core to the earthquake is insignificant and the safety coefficient of each dam element is greater than 1 at all times,and thus the dam is safe under the design earthquake actions.
引文
[1]崔娟,沈振中.高沥青混凝土心墙混合坝地震永久变形特性[J].水电能源科学,2010,28(1):73-76.(CUI Juan,SHENZhen-zhong.Characteristics of Earthquake Induced PermanentDeformation of a High Composite Dam with Asphalt ConcreteCore Wall[J].Water Resources and Power,2010,28(1):73-76.(in Chinese))
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[3]王娟,李勋峰.金平沥青混凝土心墙堆石坝三维有限元数值分析[J].水电能源科学,2007,25(1):71-74.(WANG Juan,LIXun-feng.Three Dimensional FEM Numerical Study on JinpingRockfill Dam with Asphalt Concrete Core[J].Water Resourcesand Power,2007,25(1):71-74.(in Chinese))
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[6]张丙印,李全明,熊焰,等.三峡茅坪溪沥青混凝土心墙堆石坝应力变形分析[J].长江科学院院报,2004,21(2):18-21.(ZHANG Bing-yin,LI Quan-ming,XIONG Yan,et al.Numeri-cal Study on Maopingxi Rockfill Dam with Asphalt ConcreteCore in Three Gorges Project[J].Journal of Yangtze River Sci-entific Research Institute,2004,21(2):18-21.(in Chinese))
[7]张波,王赟,李智慧,等.深覆盖层沥青混凝土心墙坝动力特性分析[J].水资源与水工程学报,2006,17(5):87-89.(ZHANG Bo,WANG Yun,LI Zhi-hui,et al.Analysis of Dynamic Char-acteristics for the Asphalt Concrete Core Dam by Deep Over-burden[J].Journal of Water Resources and Water Engineer-ing,2006,17(5):87-89.(in Chinese))
[8]翼春楼,夏颂佑,邓德生.深覆盖层上沥青混凝土心墙堆石坝动力分析心墙心墙[J].河海大学学报,1995,23(5):74-80.(JI Chun-lou,XIA Song-you,DENG De-sheng.Dynamic Analysis of Asphalt Concrete Core rockfill Dams on Deep Overburden[J].Journal of Hohai University(Natural Sciences),1995,23(5):74-80.(in Chinese))
[9]沈振中,迟世春,陈剑.混凝土面板堆石坝高趾墙动力性态计算研究[J].水电能源科学,2005,23(1):73-75.(SHEN Zhen-zhong,CHI Shi-chun,CHEN Jian.Research on Dynamic Be-havior of High-toe wall of Concrete Facing Rockfill Dam[J].Water Resources and Power,2005,23(1):73-75.(in Chinese))
[10]温续余,沈振中,吕生玺.九甸峡混凝土面板堆石坝应力变形性态研究[J].河海大学学报(自然科学版),2005,33(S1):42-46.(WEN Xu-yu,SHEN Zhen-zhong,LU Sheng-xi.Study on Stress and Deformation Behaviors of Jiudianxia Concrete Face Rockfill Dam[J].Journal of Hohai University(Natural Sci-ences),2005,33(Supp.1):42-46.(in Chinese))
[11]李志强,张鸿儒,候永峰,等.土石坝沥青混凝土心墙三轴力学特性研究[J].岩石力学与工程学报,2006,25(5):997-1002.(LI Zhi-qiang,ZHANG Hong-ru,HOU Yong-feng,et al.Tri-axial Test Study on Mechanical Haracteristics of Asphalt Con-crete in the Core Wall of Earth-rock Fill Dam[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):997-1002.(in Chinese))
[12]李志强,候永峰,吕鹏.茅坪溪土石坝沥青混凝土心墙的材料力学特性[J].岩土工程界,2003,6(1):73-74.(LI Zhi-qiang,HOU Yong-feng,LV Peng.Material Mechanics Behavior of Asphalt Concrete Core for Maopingxi Earth-rock Dam[J].Ge-ological Exploration For Non-ferrous Metals,2003,6(1):73-74.(in Chinese))
[2]万连兵,冯燕明,韩朝军,等.克孜加尔沥青混凝土心墙坝应力变形研究[J].水电能源科学,2011,29(4):66-69.(WAN Lian-bing,FENG Yan-ming,HAN Chao-jun,et al.Runoff Coeffi-cients Variation and Its Influencing Factor in Dongjiang RiverBasin[J].Water Resources and Power,2011,29(4):66-69.(inChinese))
[3]王娟,李勋峰.金平沥青混凝土心墙堆石坝三维有限元数值分析[J].水电能源科学,2007,25(1):71-74.(WANG Juan,LIXun-feng.Three Dimensional FEM Numerical Study on JinpingRockfill Dam with Asphalt Concrete Core[J].Water Resourcesand Power,2007,25(1):71-74.(in Chinese))
[4]郭雪莽,王成西,吴焕营.沥青混凝土心墙土石坝的非线性有限元分析[J].应用基础与工程科学学报,1995,3(2):131-136.(GUO Xue-mang,WANG Cheng-xi,WU Huan-ying.Nonlin-ear Finite Element Analysis of Embankment Dam with Asphal-tic Concrete Core Wall[J].Journal of Basic Science and Engi-neering,1995,3(2):131-136.(in Chinese))
[5]王为标,孙振天,吴利言.沥青混凝土应力-应变特性研究[J].水力发电,1996,(5):1-8.(WANG Wei-biao,SUN Zhen-tian,WU Li-yan.Study on Stress-strain Relationship of Asphalt Co-nerete[J].Journal of Hydraulic Engineering,1996,(5):1-8.(inChinese))
[6]张丙印,李全明,熊焰,等.三峡茅坪溪沥青混凝土心墙堆石坝应力变形分析[J].长江科学院院报,2004,21(2):18-21.(ZHANG Bing-yin,LI Quan-ming,XIONG Yan,et al.Numeri-cal Study on Maopingxi Rockfill Dam with Asphalt ConcreteCore in Three Gorges Project[J].Journal of Yangtze River Sci-entific Research Institute,2004,21(2):18-21.(in Chinese))
[7]张波,王赟,李智慧,等.深覆盖层沥青混凝土心墙坝动力特性分析[J].水资源与水工程学报,2006,17(5):87-89.(ZHANG Bo,WANG Yun,LI Zhi-hui,et al.Analysis of Dynamic Char-acteristics for the Asphalt Concrete Core Dam by Deep Over-burden[J].Journal of Water Resources and Water Engineer-ing,2006,17(5):87-89.(in Chinese))
[8]翼春楼,夏颂佑,邓德生.深覆盖层上沥青混凝土心墙堆石坝动力分析心墙心墙[J].河海大学学报,1995,23(5):74-80.(JI Chun-lou,XIA Song-you,DENG De-sheng.Dynamic Analysis of Asphalt Concrete Core rockfill Dams on Deep Overburden[J].Journal of Hohai University(Natural Sciences),1995,23(5):74-80.(in Chinese))
[9]沈振中,迟世春,陈剑.混凝土面板堆石坝高趾墙动力性态计算研究[J].水电能源科学,2005,23(1):73-75.(SHEN Zhen-zhong,CHI Shi-chun,CHEN Jian.Research on Dynamic Be-havior of High-toe wall of Concrete Facing Rockfill Dam[J].Water Resources and Power,2005,23(1):73-75.(in Chinese))
[10]温续余,沈振中,吕生玺.九甸峡混凝土面板堆石坝应力变形性态研究[J].河海大学学报(自然科学版),2005,33(S1):42-46.(WEN Xu-yu,SHEN Zhen-zhong,LU Sheng-xi.Study on Stress and Deformation Behaviors of Jiudianxia Concrete Face Rockfill Dam[J].Journal of Hohai University(Natural Sci-ences),2005,33(Supp.1):42-46.(in Chinese))
[11]李志强,张鸿儒,候永峰,等.土石坝沥青混凝土心墙三轴力学特性研究[J].岩石力学与工程学报,2006,25(5):997-1002.(LI Zhi-qiang,ZHANG Hong-ru,HOU Yong-feng,et al.Tri-axial Test Study on Mechanical Haracteristics of Asphalt Con-crete in the Core Wall of Earth-rock Fill Dam[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):997-1002.(in Chinese))
[12]李志强,候永峰,吕鹏.茅坪溪土石坝沥青混凝土心墙的材料力学特性[J].岩土工程界,2003,6(1):73-74.(LI Zhi-qiang,HOU Yong-feng,LV Peng.Material Mechanics Behavior of Asphalt Concrete Core for Maopingxi Earth-rock Dam[J].Ge-ological Exploration For Non-ferrous Metals,2003,6(1):73-74.(in Chinese))
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