Three-dimensional seismic response analysis of a concrete-faced rockfill dam on overburden layers  

作　　者：Dakuo FENG Ga ZHANG Jianmin ZHANG 

机构地区：[1]State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Frontiers of Structural and Civil Engineering》2010年第2期258-266,共9页结构与土木工程前沿（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant No.50979046);the National Basic Research Program(973 Program,No.2007CB714108).These supports are gratefully acknowledged.

摘　　要：Reasonable seismic response analysis of a high rockfill dam is of great engineering significance in guiding its design and ensuring its seismic safety during operation,especially of a concrete-faced rockfill dam(CFRD)on overburden layers.The three-dimensional seismic behavior of the Miaojiaba CFRD is simulated and analyzed by the finite element method(FEM).The results indicate that:1)the amplification coefficient along the dam axis gradually increases with the altitude,and reaches maximum at the dam crest;2)the vertical residual deformation mainly exhibits downwards and reaches maximum near the dam crest;3)the earthquake significantly aggravates the deformation of peripheral joints;4)the impounding condition and overburden characteristics have great effects on the dam's seismic response.

关 键 词：concrete-faced rockfill dam(CFRD) overburden layer dynamic analysis finite element method(FEM) 

分 类 号：P31[天文地球—固体地球物理学]