紫坪铺大坝汶川地震震害分析及高土石坝抗震减灾研究设想
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摘要
紫坪铺面板堆石坝作为"5.12"汶川大地震强震区高土石坝的典型,重点总结了其主要震害,包括坝体地震永久变形,面板的脱空与垂直缝挤压破坏和施工缝错台,下游坝坡局部震损,防浪墙等坝顶结构震损,渗漏量变化等;并针对本次汶川地震土石坝震害的特点,提出进一步开展有关高土石坝抗震减灾设计研究的一些设想,包括土石坝震害及地震资料的调研与获取,高土石坝动力破损特征与地震灾害机理研究,高土石坝地震安全评价与震害评估方法研究,以及高土石坝抗震加固及应急处置措施研究等。
As one typical high Concrete Faced Rock-fill Dam(CFRD) subjected to "5.12" Wenchuan Great Earthquake,the earthquake damages of Zipingpu CFRD during the Wenchuan Great Earthquake are presented including earthquake-induced permanent deformation,separation between the concrete face and cushion layer,the crushed damage of the vertical joints and the dislocation of the construction joints of the concrete face,the earthquake damages of downstream dam slope,cracks of wave protection wall and dam top pavements and the changes of seepage amount,etc.In view of the characteristics of the earthquake damages of Zipingpu CFRD,several study proposals on anti-earthquake and disaster reduction of high rock-fill dam are discussed.The study proposal stressed the acquirement and analysis of earthquake damage data,study on mechanism of earthquake disaster,seismic safety evaluation theory,anti-seismic measures and emergency and protection measures,etc.
As one typical high Concrete Faced Rock-fill Dam(CFRD) subjected to "5.12" Wenchuan Great Earthquake,the earthquake damages of Zipingpu CFRD during the Wenchuan Great Earthquake are presented including earthquake-induced permanent deformation,separation between the concrete face and cushion layer,the crushed damage of the vertical joints and the dislocation of the construction joints of the concrete face,the earthquake damages of downstream dam slope,cracks of wave protection wall and dam top pavements and the changes of seepage amount,etc.In view of the characteristics of the earthquake damages of Zipingpu CFRD,several study proposals on anti-earthquake and disaster reduction of high rock-fill dam are discussed.The study proposal stressed the acquirement and analysis of earthquake damage data,study on mechanism of earthquake disaster,seismic safety evaluation theory,anti-seismic measures and emergency and protection measures,etc.
引文
[1]水利部紫坪铺大坝现场专家组.“5.12”地震后紫坪铺混凝土面板堆石坝安全监测与现场检查资料分析报告[R].2008.
[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堆石坝的影响及原因分析[J].岩土工程学报,2008,30(6):795-801.
[3]刘小生,王钟宁,汪小刚,等.面板坝大型振动台模型试验与动力分析[M].北京:中国水利水电出版社、知识产权出版社,2005.
[4]赵剑明,常亚屏,陈宁.加强高土石坝抗震研究的现实意义及工作展望[J].世界地震工程,2004,20(1):95-99.
[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堆石坝的影响及原因分析[J].岩土工程学报,2008,30(6):795-801.
[3]刘小生,王钟宁,汪小刚,等.面板坝大型振动台模型试验与动力分析[M].北京:中国水利水电出版社、知识产权出版社,2005.
[4]赵剑明,常亚屏,陈宁.加强高土石坝抗震研究的现实意义及工作展望[J].世界地震工程,2004,20(1):95-99.
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