TY - GEN
T1 - Seismic response analysis of continuous highway bridges under near-fault ground motions
AU - Ma, Hai Bin
AU - Zhuo, Wei Dong
AU - Lavorato, Davide
AU - Fiorentino, Gabriele
AU - Nuti, Camillo
AU - Sabetta, Fabio
PY - 2017
Y1 - 2017
N2 - Ground motions in proximity to the causative fault of an earthquake are significantly affected in many cases by forward-directivity effects. The resulting seismic action on bridge is characterized by an important pulse type motion that is not considered in many international structural designed codes. In this paper, the effects of near-fault ground motions applied on regular highway bridges with design parameters selected by a sampling method, are discussed and compared with the ones of the same bridges subjected to far-fault earthquakes. Time history analyses were performed on fiber element bridge models by means of OpenSees considering seven near-fault earthquake input records with significant velocity pulse selected worldwide from the PEER database considering the same site conditions, and the El-centro earthquake record as ordinary far-field earthquake. The results are analyzed in term of top pier drift ratio, pier slenderness ratio, PGA and earthquake intensity parameters.
AB - Ground motions in proximity to the causative fault of an earthquake are significantly affected in many cases by forward-directivity effects. The resulting seismic action on bridge is characterized by an important pulse type motion that is not considered in many international structural designed codes. In this paper, the effects of near-fault ground motions applied on regular highway bridges with design parameters selected by a sampling method, are discussed and compared with the ones of the same bridges subjected to far-fault earthquakes. Time history analyses were performed on fiber element bridge models by means of OpenSees considering seven near-fault earthquake input records with significant velocity pulse selected worldwide from the PEER database considering the same site conditions, and the El-centro earthquake record as ordinary far-field earthquake. The results are analyzed in term of top pier drift ratio, pier slenderness ratio, PGA and earthquake intensity parameters.
KW - Continuous Bridges
KW - Intensify Measures
KW - Near-fault
KW - Orthogonal Experimental Design
KW - Time-history Analysis
UR - https://www.scopus.com/pages/publications/85042477572
U2 - 10.7712/120117.5555.18040
DO - 10.7712/120117.5555.18040
M3 - Conference Contribution (Conference Proceeding)
AN - SCOPUS:85042477572
T3 - COMPDYN 2017 - Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
SP - 2138
EP - 2148
BT - COMPDYN 2017 - Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
A2 - Papadrakakis, M.
A2 - Fragiadakis, Michalis
PB - National Technical University of Athens
T2 - 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2017
Y2 - 15 June 2017 through 17 June 2017
ER -