Multi-Hazard Resilience Assessment of Base-Isolated Bridges
Publication: Structures Congress 2023
ABSTRACT
Damage to bridges during natural hazards can cause major difficulties in post-event emergency activities. In addition, the deterioration of bridges over their lifespan significantly impacts the life-cycle performance of bridges. This study intends to evaluate the overall life-cycle resilience performance and post-hazard loss analysis of isolated bridges equipped with different isolation systems, including lead rubber bearings and friction pendulum bearings. For the lifetime resilience and vulnerability assessment of a curved base-isolated bridge, bridge deterioration resulting from rebar corrosion and suites of ground motions representing possible seismic hazards at the bridge site are considered. The comparative resilience assessment and loss analysis results represent the base-isolation technique's comparative adequacy, resiliency, and cost-effectiveness. Statistical analysis is conducted to identify the parameters affecting base-isolated bridges' resiliency and life-cycle cost. The results demonstrate that the resilience, loss, and cost analysis results are highly sensitive to the type of isolation bearings.
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Information & Authors
Information
Published In
Structures Congress 2023
Pages: 95 - 105
History
Published online: May 1, 2023
ASCE Technical Topics:
- Base isolation
- Benefit cost ratios
- Bridge engineering
- Bridge tests
- Bridges
- Business management
- Deterioration
- Earthquake engineering
- Engineering fundamentals
- Field tests
- Financial management
- Geotechnical engineering
- Geotechnical investigation
- Ground motion
- Infrastructure
- Infrastructure resilience
- Life cycles
- Materials characterization
- Materials engineering
- Practice and Profession
- Seismic design
- Structural engineering
- Tests (by type)
Authors
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