Reliability-Based Optimization of FRP Deck Panels

Thompson, Michel D; Eamon, Christopher D.; Rais‐Rohani, Masoud

doi:10.2514/6.2006-2157

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Formulation Of Maintenance Strategy1

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2021

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“…The system was modeled as a series system because maintenance needs to be performed when there is a violation of the limit state for any failure modes [28]. It is worth noting that bridge decks are usually overdesigned [31,32]. Thus, their flexure, shear deflection, and fatigue failure modes were not considered.…”

Section: Formulation Of Maintenance Strategymentioning

confidence: 99%

Risk-Cost Optimized Maintenance Strategy for Steel Bridge Subjected to Deterioration

Mahmoodian

Khaloo

et al. 2021

Sustainability

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This paper aims to develop a deteriorated bridge maintenance strategy that ensures the safe operation of steel structures and minimizes the total risk. Five common failure modes are considered for the deteriorated bridge: flexure, shear, deflection, fatigue failure for girder, and chloride attack for the concrete deck. Time-dependent and system reliability analyses are carried out to find the probability of failure under these failure modes. Risk-cost optimization is then used to determine the maintenance strategy. This method was applied to a working example. It was found that the developed maintenance strategy can predict when, where, and what to maintain for a bridge to ensure its safe and serviceable operation during its lifespan. The proposed methodology can help structural engineers and asset managers repair and maintain bridges under deterioration.

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Section: Formulation Of Maintenance Strategymentioning

confidence: 99%