Improved Damage Parameters for Post-Earthquake Applications

by Yousef Bozorgnia and Vitelmo Bertero

Bozorgnia, Yousef, and Vitelmo Bertero (2002). Improved Damage Parameters for Post-Earthquake Applications. SMIP02 Seminar on Utilization of Strong-Motion Data, p. 61 - 82.

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Various ground shaking and damage parameters are examined for post-earthquake applications. Peak ground motion values, elastic response spectra, spectrum intensity, drift spectrum, inelastic spectra, hysteretic energy spectrum, and two improved damage spectra are examined. The proposed damage spectra will be zero if the response remains elastic, and will be unity when the displacement capacity under monotonic deformation is reached. The damage spectra can be reduced to the special cases of normalized hysteretic energy and displacement ductility spectra. The proposed damage spectra are promising for seismic vulnerability studies and post-earthquake applications of existing facilities, and performance-based design of new structures.