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《Journal of Earthquake Engineering and Engineering Vibration》 2009-01
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Comparison of ARX structural modal parameter identification methods by using theoretical time-histories of seismic responses

CAO Huilan1,LI Shanyou2,ZHANG Lei3,LI Wei2(1.Tongji University,Department of Bridge Engineering,Shanghai 200092,China;2.Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;3.5th Engineering Co.Ltd,China Railway 13th Bureau,Changchun 130031,China)  
Structural parameter identification is the basis of safety assessment for earthquake-resistance and health diagnosis of structures.Structural modal parameter identification using seismic observation records receives full attention in earthquake engineering.In this paper,modal parameter identification methods of one-dimensional,multi-dimensional and integral ARX models are compared and analyzed by using the seismic responses of the three-story plane frame structure.The results show that: integral ARX model gives stable and highly precise results,which is more suitable for structural parameter identification of multi-degree of freedom systems.
【CateGory Index】: TU311.3
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