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Volume 40 Issue 6
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KONG Xian-jing, PANG Rui, ZOU De-gao, XU Bin, ZHOU Yang. Seismic performance evaluation of high CFRDs based on incremental dynamic analysis[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(6): 978-984. DOI: 10.11779/CJGE201806002
Citation: KONG Xian-jing, PANG Rui, ZOU De-gao, XU Bin, ZHOU Yang. Seismic performance evaluation of high CFRDs based on incremental dynamic analysis[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(6): 978-984. DOI: 10.11779/CJGE201806002
shu

Seismic performance evaluation of high CFRDs based on incremental dynamic analysis

  • 1. The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;
    2. School of Hydraulic Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China

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  • Received Date: February 06, 2017
  • Published Date: June 24, 2018
    Graphical Abstract
    • Abstract
  • The seismic performance analysis can effectively estimate the risk of structures under earthquake action, so it gradually becomes the important method of seismic safety evaluation. However, this method is still in the beginning stage of application because of the complexity of CFRDs. The safety of these high dams must be seriously considered as a large number of high CFRDS are constructed, so it is very important to perform the seismic performance analysis of dams. As the seismic performance analysis method, the incremental dynamic analysis (IDA) can analyze the change of structural performance under different intensity earthquakes comprehensively and deeply. IDA is introduced into the field of safety evaluation of high CFRDs, and a seismic damage performance evaluation method is established. Fifteen different strong motion records are chosen according to the site conditions. The peak ground acceleration of earthquake is selected as the earthquake intensity factor. The dam seismic deformation, slope stability and anti-seepage of face safety are selected as the indexes of seismic performance evaluation. First, the damage grade standards of high CFRDs of each evaluation index are suggested after selecting the appropriate performance parameters. Afterwards, the seismic fragility curves of each performance parameter are acquired through a large number of nonlinear finite element calculations. Finally, the failure probability of dams under different earthquake intensities is analyzed, and the results may provide the reference and basis for the seismic performance design and safety risk assessment of high CFRDs.
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    • References (21)
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