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DAMAGE EVALUATION INDEX FROM THE VIEWPOINT OF POST-SEISMIC FUNCTIONAL RECOVERY

An index, “Ideal Repair Time (IRT)”, to evaluate the severity of earthquake damage from the viewpoint of post-seismic functional recovery was proposed, in which severity is defined to be caused by an increase in repair time. The index was formulated taking into consideration the effects of damage state (i.e. amount, extent, and quality of the damage) on an increase in repair time. The IRT reasonably evaluates the relative increase in repair time generated by the damage state. The analysis using the IRT allows structural designers to investigate the validity of the planned collapse mechanism from the perspective of functional recovery.