Impact of R/C Building Components on Its Seismic Reparability Due to the Life Cycle Economic Loss

Abstract eng:
Loss estimation of a building due to earthquake events in its life length is important to facilitate the decision making of the building owner to choose the reasonable seismic performance. In high seismic zone, the lifecycle economic loss due to earthquakes is particularly significant because the occurrence probability of medium to large earthquake, that is to say the probability of repairing the building damage, is high. Thus this paper reports the investigation on the life cycle economic loss of R/C building under a variety of conditions. Lifecycle economic loss is defined as the expected annual repairing cost (EARC) of structural members and nonstructural components damaged by earthquakes. To simulate the damage and repairing process of buildings, two scenarios of earthquake events are postulated and three building structures are modeled as multi-mass shear spring system. Structural damage is assumed to be represented in Park’s damage index and nonstructural damage is assumed to be governed by the maximum inter-story drift or peak floor acceleration. Based on these models, the lifecycle economic loss for two lifecycle earthquake scenarios, three structural types, and five building members/components are illustrated.

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