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A platform for research: civil engineering, architecture and urbanism
Performance Assessment of Pile Group-Supported Highway Bridges Considering Scour and Earthquake Hazards
Scour is a common hazard for cross-river bridges and has a detrimental and complicated effect on the seismic behavior of the bridge, e.g., making these bridges more prone to earthquake-induced damage by transferring the damage from columns to piles. The belowground pile damage is difficult to inspect and repair after an earthquake, resulting in a longer-term traffic disruption than their counterparts without scour. Acting as a critical joint in the traffic network, the in-earthquake safety and performance of the bridge are directly related to the traffic capacity of a transportation network after the disaster. In addition, soil-pile interaction modeling and uncertainty modeling are crucial concerns in the earthquake engineering community. Therefore, this study carried out the seismic performance assessment of pile group-supported highway bridges in sandy soil with variable scour effects using the fragility approach. The finite element model for the pile group-supported bridges considering the uncertainty of structural and soil parameters and record-to-record variability is generated. After that, the seismic performance of the bridge with different scour depths is evaluated and compared. The result shows that scour makes the pile group more prone to earthquake-induced damage. The pile group foundation could be changed as the most vulnerable bridge component with the increase of scour depth. However, the scour has a slight influence on the seismic fragility of the bearing and pier.
Performance Assessment of Pile Group-Supported Highway Bridges Considering Scour and Earthquake Hazards
Scour is a common hazard for cross-river bridges and has a detrimental and complicated effect on the seismic behavior of the bridge, e.g., making these bridges more prone to earthquake-induced damage by transferring the damage from columns to piles. The belowground pile damage is difficult to inspect and repair after an earthquake, resulting in a longer-term traffic disruption than their counterparts without scour. Acting as a critical joint in the traffic network, the in-earthquake safety and performance of the bridge are directly related to the traffic capacity of a transportation network after the disaster. In addition, soil-pile interaction modeling and uncertainty modeling are crucial concerns in the earthquake engineering community. Therefore, this study carried out the seismic performance assessment of pile group-supported highway bridges in sandy soil with variable scour effects using the fragility approach. The finite element model for the pile group-supported bridges considering the uncertainty of structural and soil parameters and record-to-record variability is generated. After that, the seismic performance of the bridge with different scour depths is evaluated and compared. The result shows that scour makes the pile group more prone to earthquake-induced damage. The pile group foundation could be changed as the most vulnerable bridge component with the increase of scour depth. However, the scour has a slight influence on the seismic fragility of the bearing and pier.
Performance Assessment of Pile Group-Supported Highway Bridges Considering Scour and Earthquake Hazards
Lecture Notes in Civil Engineering
Alam, M. Shahria (editor) / Hasan, G. M. Jahid (editor) / Billah, A. H. M. Muntasir (editor) / Islam, Kamrul (editor) / Zhou, Lianxu (author) / Ye, Aijun (author) / Shahria Alam, M. (author)
International Conference on Advances in Civil Infrastructure and Construction Materials ; 2023 ; Dhaka, Bangladesh
2024-08-31
9 pages
Article/Chapter (Book)
Electronic Resource
English
| British Library Conference Proceedings | 2019