覆盖层上高面板堆石坝的极限抗震能力  

Maximum seismic capacity of a high concrete-face rockfill dam on alluvium deposit

作　　者：岑威钧[1,2] 张自齐 周涛[3] 杨宏昆 卢培灿[3] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]水利部土石坝破坏机理与防控技术重点实验室,江苏南京210024 [3]四川省清源工程咨询有限公司,四川成都610072

出　　处：《水利水电科技进展》2016年第2期1-5,58,共6页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(51009055);水利部土石坝破坏机理与防控技术重点实验室开放研究基金(YK914019);江苏高校优势学科建设工程资助项目(YS11001)

摘　　要：针对地震作用下面板坝的非线性动力反应,为了准确评估大坝的极限抗震能力,从坝坡抗震稳定性、坝体震后残余变形、坝基覆盖层液化和面板接缝变形等方面探讨面板坝的地震破坏计算方法和评价标准。采用三维有限元法,对某覆盖层上高135 m的混凝土面板堆石坝进行极限抗震能力计算,结合多角度综合分析表明,大坝的极限抗震能力约为0.52g^0.54g,大坝具有较强的抗震能力。In consideration of the dynamic response of a concrete-face rockfill dam ( CFRD) to earthquakes, the calculation method and evaluation standards for seismic damage to CFRDs are investigated from the aspects of the seismic stability of dam slope, permanent deformation of dam body after earthquakes, liquefaction of foundation overburden, and deformation of slab joints of the CFRD. The maximum seismic capacity of a 135 m CFRD on an alluvium deposit is calculated using the three-dimensional finite element method. Result analysis shows that the dam has strong earthquake resistance, with a maximum seismic capacity of about 0. 52g to 0. 54g.

关 键 词：高面板堆石坝 覆盖层 坝坡稳定 永久变形 接缝变形 液化 极限抗震能力 

分 类 号：TV641.43[水利工程—水利水电工程]