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Identification of Substructure Model using Measured Response Data  

Oh, Seong-Ho (동아대학교 토목공학과)
Lee, Sang-Min (동아대학교 토목공학과)
Shin, Soobong (인하대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.8, no.2, 2004 , pp. 137-145 More about this Journal
Abstract
The paper provides a methodology of identifying a substructure model when sectional and material properties of the structure are not the a priori information. In defining a substructure model, it is required that structural responses be consistent with the actual behavior of the part of the structure. Substructure model is identified by estimating boundary spring constants and stiffness properties of the substructure. Static and modal system identification methods have been applied using responses measured at limited locations within the substructure. Simulation studies for static and dynamic responses have been carried. The results and associated problems are discussed in the paper. The procedure has been also applied to an actual multi-span plate-girder Gerber-type bridge with dynamic responses obtained from a moving truck test and construction blasting vibrations.
Keywords
substructure model; system identification; boundary springs;
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