Abstract
This paper proposes a damage identification algorithm for structural health monitoring (SHM) systems. The proposed algorithm consists of the multiple-input multiple-output (MIMO) modal analysis and the physical parameter identification. A story stiffness as a damage index of the structure is identified using complex modal parameters obtained by the MOESP subspace identification method. This algorithm was tuned to seismic isolated buildings considering their dynamics. The effectiveness of the proposed algorithm was verified through the numerical analysis. The algorithm was applied to a 4-story seismic isolated building model The proposed algorithm enhances the accuracy and reliability of the SHM systems.
