TY - JOUR
T1 - Development of fragility curves by incorporating new spectral shape indicators and a weighted damage index
T2 - case study of steel braced frames in the city of Mashhad, Iran
AU - Kazemi, Hamid
AU - Ghafory-Ashtiany, Mohsen
AU - Azarbakht, Alireza
PY - 2017/4/11
Y1 - 2017/4/11
N2 - In this study, strong ground motion record (SGMR) selection based on Eta (η) as a spectral shape indicator has been investigated as applied to steel braced frame structures. A probabilistic seismic hazard disaggregation analysis for the definition of the target Epsilon (ε) and the target Eta (η) values at different hazard levels is presented, taking into account appropriately selected SGMR’s. Fragility curves are developed for different limit states corresponding to three representative models of typical steel braced frames having significant irregularities in plan, by means of a weighted damage index. The results show that spectral shape indicators have an important effect on the predicted median structural capacities, and also that the parameter η is a more robust predictor of damage than searching for records with appropriate ε values.
AB - In this study, strong ground motion record (SGMR) selection based on Eta (η) as a spectral shape indicator has been investigated as applied to steel braced frame structures. A probabilistic seismic hazard disaggregation analysis for the definition of the target Epsilon (ε) and the target Eta (η) values at different hazard levels is presented, taking into account appropriately selected SGMR’s. Fragility curves are developed for different limit states corresponding to three representative models of typical steel braced frames having significant irregularities in plan, by means of a weighted damage index. The results show that spectral shape indicators have an important effect on the predicted median structural capacities, and also that the parameter η is a more robust predictor of damage than searching for records with appropriate ε values.
KW - damage index
KW - hazard disaggregation
KW - incremental dynamic analysis
KW - record selection
KW - spectral shape indicator
KW - vulnerability
UR - http://www.scopus.com/inward/record.url?scp=85017316289&partnerID=8YFLogxK
U2 - 10.1007/s11803-017-0388-7
DO - 10.1007/s11803-017-0388-7
M3 - Article
AN - SCOPUS:85017316289
SN - 1671-3664
VL - 16
SP - 383
EP - 395
JO - Earthquake Engineering and Engineering Vibration
JF - Earthquake Engineering and Engineering Vibration
IS - 2
ER -