An Extraction Method for Live-load Effect of Bridge Based on EEMD
Bridge plays an important role in modern transportation. Once it is damaged, there will be great loss. So assessment of bridge state has become more and more important in modern society. Ambient around bridge always are very complex and bridge is affected by many factors. So in all response of bridge, noise and useful signals mixed together. The noise generally includes temperature effect, wind load effect, live-load effect, and so on. In order to get the useful signals we must separate the live-load effect from the total effect by using multi-scale analysis firstly. EMD brought a new method for multiscale analysis and it is superior to wavelet to some extent. But it has some shortcomings also. In order to improve the performance of the EMD further, EEMD is introduced to extract live-load effect of bridge. The practical and simulation results verified the feasibility of the new method based on EEMD and the results is much better than those based on wavelet.
health monitoring bridge state assessment live-load effect wavelet EEMD
Wu Jun Chen Wei-min
College of Optoelectronic Engineering, Chongqing University, China
国际会议
上海
英文
1144-1148
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）