Impact of aftershocks and uncertainties on the seismic evaluation of non-ductile reinforced concrete frame buildings

摘要

There is increasing interest in sophisticated seismic performance evaluation that encompasses the ability to incorporate aftershock hazard. This paper presents a methodology to examine the seismic performance of two non-ductile reinforced concrete frame buildings with consideration of the interaction between the aftershocks and various post-quake decisions. The assessment investigates the direct loss, downtime, fatalities, and total loss for each of the buildings. A total of 60 recorded mainshock-aftershocks sequences are utilized. The variations in results between the method with and without consideration of aftershocks are compared. The characteristics of mainshock-aftershock sequences which may be the cause of the difference are discussed and identified. Important uncertainty sources for the post-quake decisions are also investigated through a sensitivity study. (C) 2015 Elsevier Ltd. All rights reserved.