Frontiers of Structural and Civil Engineering
>> 2010,
Volume 4,
Issue 2
doi:
10.1007/s11709-010-0031-4
Research articles
Three-dimensional seismic response analysis of
a concrete-faced rockfill dam on overburden layers
State Key Laboratory
of Hydroscience and Engineering, Tsinghua University, Beijing 100084,
China;
Available online: 2010-06-05
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Abstract
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.
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