Dynamic characteristics Analysis for the Large Bridge Based on Hilbert-Huang Transformation

摘要：

For identifing the modal parameters from the bridge vibration response under the abient excitation, a method based on Hilbert-Huang Transform(HHT) is discussed in this paper. The method of HHT includes expirical mode decompostion(EMD) and Hilbert Transform(HT). Firstly,The EMD is used to filter the mesasured data, which can reduce the effect of high freqency noise and identify the main intrinsic mode ftinction(IMF). The resulting IMF, however, consisted of free vibration and forced vibration. Then, the theory that the autocorelation function of the signal is thought of a free vibration under static random excitation is studied to get the s free vibration and use it as the input data for identifing the modal parameters. Finally, this method is applied on the GPS dynimic monitoring data of the Wuhan Baishazhou Bridye.The results show that the mode parameters can be identify effectively.

作者: Jia XU Feng-hai MA Sheng-xiang HUANG

作者单位: Liaoning Technical University, Fuxin, China Dalian University, Dalian, China Wuhan university, Wuhan, China

会议类型: 国际会议

会议名称: 3rd International Geotechnical Symposium on Geotechnical Engineering for Disaster Prevention and Reduction(第三届国际岩土工程防灾减灾学术研讨会)

会议地点: 哈尔滨

会议语种:英文

页码: 619-625

在线出版日期: 2009-07-22（万方平台首次上网日期，不代表论文的发表时间）