Prediction of Concrete Dam Failure: A Wavelet Approach
The failure of concrete dam is a process started from local failure to global instability, and there is a huge scale difference in the process, so the analysis should be conducted in a multiscale manner. Choosing a typical failure curve as a signal, the precursor load is determined in the form of singularity point in the curve. With a numerical example, the previous reported methods for determining precursor load are compared with the wavelet approach, and it is shown that the wavelet approach gives more accuracy and reasonable results. Besides the precursor load, the failure mode, local failure or global instability, can also be figured out by the wavelet approach. By applying it to the Jinping arch dam, the obtained results are in good consistency with geology mechanical test. It is shown that the wavelet approach is of good applicability and accuracy for dam failure analysis.
Multiscale analysis Concrete dam Precursor load Curve singularity
Qiang Li Qingwen Ren
Department of Engineering Mechanics, Hohai University, No.1 Xikang Road, Nanjing 210098,Jiangsu, China
国际会议
上海
英文
1470-1475
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）