Serviceability-related reliability for mainshock-damaged reinforced concrete piers considering the aftershock-induced seismic hazards

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Chien-Kuo Chiu (ckchiu@mail.ntust.edu.tw) and Charles Poegoeh Arista
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Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2017, vol. 87, issue 3, 1333-1359

Abstract: Abstract After the mainshock of an earthquake, the major concerns are their serviceability of damaged structures or safety when subjected aftershocks. How to choose the appropriate maintenance actions for damaged structures in their limited post-mainshock service periods is important. To consider the effect of aftershock events on the deterioration of structural performance, reduction factors of seismic capacity for specified damage states based on experimental data are used in the reliability analysis. Additionally, this work proposes an integral method that can analyze the time-dependent capacity of a mainshock-damaged RC pier and simulate aftershock events within a specified period after the mainshock of an earthquake, while at the same time considering cumulative damage induced by ground motions. To determine the post-mainshock service period for a mainshock-damaged RC pier located in a region with high seismic hazard induced by the aftershock, the proposed assessment method is applied to derive its reliability function of a specified damage state. Finally, the proposed procedure for the reliability function for a specified limit state is then applied to a case study of typical RC piers in Taiwan to demonstrate its applicability.

Keywords: Reliability; Aftershock; Reduction factor; Reinforced concrete; Cumulative damage (search for similar items in EconPapers)
Date: 2017
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