Study on anti-seismic performance of three-dimensional concrete gravity dam system based on IDA

HE Luxiang1 CHEN Denghong1 YANG Zihui1 YANG Naixin1 SUN Bao1

(1.College of Civil Engineering and Architecture, China Three Gorges University, Yichang, China 443002)

【Abstract】For the aim of studying the anti-seismic performance of concrete gravity dam under earthquake loads, the Guangzhao concrete gravity dam with 200 meters height in the Southwest China was taken as an example. The three-dimensional finite element model of the dam body–reservoir water–foundation system was established. Dynamic analysis and seismic vulnerability analysis were carried out based on the incremental dynamic analysis (IDA) method. According to the IDA results of the whole dam model, the displacements of the dam crest and the bottom hole were extracted. The IDA curves, the fractile curves, and the seismic vulnerability curves were obtained. It is concluded that when the PGA of the seismic wave was below 0.2 g, the probability of damage to the dam was very low; when the PGA was 0.3 g or less, the basic function guarantee of the dam can be satisfied; when the PGA was below 0.6 g, the basic safety requirement of the dam can be met.

【Keywords】 concrete gravity dam; three-dimensional model; Incremental Dynamic Analysis (IDA); seismic vulnerability;


【Funds】 National Natural Science Foundation of China (51309143) Natural Science Foundation of Hubei Province (2018CFB652) Open Research Fund of State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin (IWHR-SKL-201716)

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(Translated by ZHANG XY)


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This Article


CN: 23-1324/X

Vol 28, No. 04, Pages 159-168

August 2019


Article Outline


  • 1 Anti-seismic analysis method based on IDA
  • 2 Project profile and calculation analysis
  • 3 Study on overall limit anti-seismic performance
  • 4 Failure mode analysis of whole dam
  • 5 Conclusions
  • References