A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Aftershock Seismic Capacity Assessment of Concrete Bridge Piers Considering Post-mainshock Strength Degradation
Bridge infrastructure serves as part of the backbone to the transportation industry, playing an often-overlooked role in the economy until service is disrupted. The sophistication of seismic design practices continues to improve and holds an expanding stake in maximizing service life of bridges in the research and engineering community alike. Mainshock-Aftershock earthquake sequences present another design challenge, as aftershocks typically occur within a time period where repairs to the initial damage incurred during the mainshock are not able to be realized. The objective of this study is to investigate the effect of mainshock strength degradation on the post-aftershock seismic capacity in terms lateral load carrying capacity and post-earthquake functionality. In this study, a parameterized set of circular bridge pier columns are designed according to the performance-based design guidelines present in the current edition of the Canadian Highway Bridge Design Code for a major-route bridge located in Vancouver, BC. Using nonlinear finite element model with a strain-based strength degradation scheme, the bridge piers are analyzed under a suite of as-recorded mainshock-aftershock ground motion records representing different hazard levels. The outcome of this study will aid in understanding the role of performance-based design on the post-aftershock seismic performance and functionality of bridge piers.
Aftershock Seismic Capacity Assessment of Concrete Bridge Piers Considering Post-mainshock Strength Degradation
Bridge infrastructure serves as part of the backbone to the transportation industry, playing an often-overlooked role in the economy until service is disrupted. The sophistication of seismic design practices continues to improve and holds an expanding stake in maximizing service life of bridges in the research and engineering community alike. Mainshock-Aftershock earthquake sequences present another design challenge, as aftershocks typically occur within a time period where repairs to the initial damage incurred during the mainshock are not able to be realized. The objective of this study is to investigate the effect of mainshock strength degradation on the post-aftershock seismic capacity in terms lateral load carrying capacity and post-earthquake functionality. In this study, a parameterized set of circular bridge pier columns are designed according to the performance-based design guidelines present in the current edition of the Canadian Highway Bridge Design Code for a major-route bridge located in Vancouver, BC. Using nonlinear finite element model with a strain-based strength degradation scheme, the bridge piers are analyzed under a suite of as-recorded mainshock-aftershock ground motion records representing different hazard levels. The outcome of this study will aid in understanding the role of performance-based design on the post-aftershock seismic performance and functionality of bridge piers.
Aftershock Seismic Capacity Assessment of Concrete Bridge Piers Considering Post-mainshock Strength Degradation
Structural Integrity
Fonseca de Oliveira Correia, José António (editor) / Choudhury, Satyabrata (editor) / Dutta, Subhrajit (editor) / Todorov, Borislav (author) / Billah, A. H. M. Muntasir (author)
International Conference on Advances in Structural Mechanics and Applications ; 2021 ; Silchar, India
Advances in Structural Mechanics and Applications ; Chapter: 4 ; 43-61
Structural Integrity ; 27
2022-06-03
19 pages
Article/Chapter (Book)
Electronic Resource
English
Collapse Capacity of Ordinary RC Moment Frames Considering Mainshock-Aftershock Effects
| Taylor & Francis Verlag | 2022