Comparison of Seismic Upgrading Techniques Applied to an Existing Prestressed Concrete Bridge
Publication: Journal of Bridge Engineering
Volume 28, Issue 8
Abstract
Various solutions can be applied for seismic upgrading of bridges based on the improvement of strength or ductility. However, the use of advanced technologies as passive control systems by seismic isolation or dissipative devices can be more convenient because there is a definite reduction in the action transferred to foundations, which leads to the avoidance of expensive interventions. In this paper, a comparison between various retrofitting techniques is proposed considering the case study of a prestressed existing bridge that has a double cantilever configuration. The results confirm the efficiency of the passive control systems; furthermore, the maintenance of the base isolation system appears more onerous than that of the dissipative device system realized with an external contrast structure.
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Acknowledgments
The work has been developed in the framework of the 2022–2024 Reluis-DPC research program funded by the Italian Civil Protection Department, as contribution to the Work Package CAP Bridges (Task 4.3).
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 28 • Issue 8 • August 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jul 10, 2022
Accepted: Mar 31, 2023
Published online: May 22, 2023
Published in print: Aug 1, 2023
Discussion open until: Oct 22, 2023
ASCE Technical Topics:
- Base isolation
- Bridge engineering
- Bridges
- Bridges (by material)
- Buildings
- Comparative studies
- Concrete bridges
- Control systems
- Earthquake engineering
- Engineering fundamentals
- Existing buildings
- Geotechnical engineering
- Materials engineering
- Materials processing
- Methodology (by type)
- Prestressing
- Research methods (by type)
- Seismic design
- Seismic effects
- Seismic tests
- Structural engineering
- Structures (by type)
- Systems engineering
- Systems management
- Tests (by type)
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