Fragility Assessment Model of Building Structures Using Characteristics of Artificial Aftershock Motions

Sang Wook Park, Hyo Seon Park, Byung Kwan Oh, Se Woon Choi

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Any additional loads applied to a damaged structure can aggravate its instability and thus, the impact of successive earthquakes need to be considered. This study proposed a quantitative assessment model for the fragility of a damaged structure subjected to aftershock. Mean period and the strong motion duration were considered as characteristics of earthquake motions. Simulation models of two reinforced concrete structures and one steel structure were selected to examine the applicability of the model. Based on the suggested fragility and residual deformation coefficients, critical earthquake sequences for each structure were identified. The proposed model was efficient in selecting critical earthquake sequences by using the limited number of aftershocks, and these sequences are expected to be useful indicators in the establishment of a retrofit plan according to the predicted structural response and target performance levels.

Original languageEnglish
Pages (from-to)691-708
Number of pages18
JournalComputer-Aided Civil and Infrastructure Engineering
Issue number8
Publication statusPublished - 2018 Aug

Bibliographical note

Publisher Copyright:
© 2018 Computer-Aided Civil and Infrastructure Engineering

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design
  • Computational Theory and Mathematics


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