某混凝土重力坝极限抗震安全评价
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摘要
针对某重力坝典型非溢流坝段抗震问题,运用ADINA软件建立了反映坝体混凝土与地基岩体材料非线性的重力坝抗震分析模型,采用地震动超载的方法对重力坝的极限抗震能力进行了分析,并探讨了分别以坝体混凝土开裂区贯穿和地基塑性区贯通作为大坝和地基动力稳定判别标准的抗震安全评价方法。结果表明,该重力坝典型坝段能承受峰值加速度约为0.826g的地震。
Based on the typical non-overflow dam section of a certainn gravity dam,the software ADINA is used to establish a seismic analysis model of gravity dam which can reflect the material nonlinearity of dam concrete and foundation rock.And then the seismic overload method is adopted to analyze the ultimate seismic capacity of the gravity dam.Finally,the method of seismic safety,which takes the transfixion of the cracking zone of dam concrete and the plastic zone of foundation as the dynamic stability criterion of dam and foundation,is discussed in this paper.The results show that this dam section can undertake the earthquake whose peak acceleration is 0.826g.
Based on the typical non-overflow dam section of a certainn gravity dam,the software ADINA is used to establish a seismic analysis model of gravity dam which can reflect the material nonlinearity of dam concrete and foundation rock.And then the seismic overload method is adopted to analyze the ultimate seismic capacity of the gravity dam.Finally,the method of seismic safety,which takes the transfixion of the cracking zone of dam concrete and the plastic zone of foundation as the dynamic stability criterion of dam and foundation,is discussed in this paper.The results show that this dam section can undertake the earthquake whose peak acceleration is 0.826g.
引文
[1]水利水电设计规划总院.水电工程防震抗震研究设计及专题报告编制暂时规定[S].北京:水利水电规划设计总院,2008.
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[3]张亚敬,张燎军,陈立.汶川地震实测波作用下高耸进水塔结构损伤开裂分析[J].水电能源科学,2011,29(9):97-99,114.
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[5]中国水利水电科学研究院.水工建筑物抗震设计规范(DL5073-2000)[S].北京:中国电力出版社,2001.
[6]王铭明.阿海碾压混凝土重力坝抗震加固措施的试验及数值研究[D].呼和浩特:内蒙古农业大学,2010.
[7]Hall J F.The Dynamic and Earthquake Behavior of Concrete Dams:Views of Experimental Behavior and Observational Evidence[J].Soil Dynamics Earthquake Engineering,1988,7(2):58-121.
[8]张国新,金峰,王光伦.用基于流形元的子域奇异边界元法模拟重力坝的地震破坏[J].工程力学,2001,18(4):18-27.
[2]金峰,周建平.重力坝在校核地震工况下核算方法的建议[J].水力发电,2009,35(4):31-33,41.
[3]张亚敬,张燎军,陈立.汶川地震实测波作用下高耸进水塔结构损伤开裂分析[J].水电能源科学,2011,29(9):97-99,114.
[4]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005.
[5]中国水利水电科学研究院.水工建筑物抗震设计规范(DL5073-2000)[S].北京:中国电力出版社,2001.
[6]王铭明.阿海碾压混凝土重力坝抗震加固措施的试验及数值研究[D].呼和浩特:内蒙古农业大学,2010.
[7]Hall J F.The Dynamic and Earthquake Behavior of Concrete Dams:Views of Experimental Behavior and Observational Evidence[J].Soil Dynamics Earthquake Engineering,1988,7(2):58-121.
[8]张国新,金峰,王光伦.用基于流形元的子域奇异边界元法模拟重力坝的地震破坏[J].工程力学,2001,18(4):18-27.
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