Application of Robust Independent Component Analysis in Structural Damage Feature Extraction
XU Xianfeng
ZHANG Huazhu
DUAN Chendong
Abstract：A new ICA algorithm Robust Independent Component Analysis(RobustICA)is applied to the four-story steel frame scale model of the IASC-ASCE to extract modal natural frequencies in order to extract the damage modal frequencies of civil structures accurately. Firstly,the detection nodes near the excitation points are selected,then the independent components are ob?tained by blind source separation using RobustICA algorithm,and then the modal natural frequencies under different conditions are determined by spectrum analysis. The results show that the independence among the components separated by RobustICA algorithm is higher and the natural frequencies can be separated more precisely.
Keywords：IASC-ASCE structure modelnatural frequencyRobustICA algorithmblind source separationspectrum anal?ysis
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 508-512 )