关键词:
Life cycle
摘要:
This paper proposes a quantitative seismic risk index for building structures utilizing seismic risk curves. The index is computed as follows: (1) compute probability distribution of uniform hazard spectra on the engineering bedrock at the point of interest, (2) compute the effect of subsurface structure on the spectra if necessary, and (3) compute the proposed index utilizing the expectation values during a certain period of time, which are calculated from the maximum seismic responses by non-linear multi-modal analysis. In order to verify their effectiveness, the proposed indexes of 29 analysis models comprised of seismic sources, subsurface structures, and 3-story buildings are calculated. Consequently, a good correlation between the proposed index and the probable maximum loss was found, as well as between the index and the seismic life-cycle cost;the effectiveness of the proposed index was verified.