Journal
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
Volume 104, Issue -, Pages 432-436Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.soildyn.2017.11.017
Keywords
High CFRDs; Deformation; Damage index; IDA; Fragility; Seismic performance
Funding
- National Key Research and Development Program of China [2017YFC0404900]
- National Natural Science Foundation of China [51678113, 51679029, 51508071, 51779034]
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In this paper, a seismic fragility analysis method based on incremental dynamic analysis (IDA) is extended to evaluate the seismic performance of high concrete face rockfill dams (CFRDs). Permanent deformation and face slab damage index using a modified generalized plasticity model for rockfills and a plastic-damage model for face-slabs are considered to be dam damage measures (DMs) after defining a new face-slab damage index. The verification to damage index through the Zipingpu CFRD and previous research indicates that the grading standards are reasonable. Fragility curves and the probabilities are determined for each DM under different earthquake intensities. The results of fragility analysis demonstrate that this method can provide a strong scientific basis for predicting the earthquake destruction and loss of high CFRDs.
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