Promoting probability-based bridge assessment in engineering practice: an Australian case study

Melhem, Mayer M.; Caprani, Colin C.

doi:10.1080/15732479.2022.2061017

Cited by 3 publications

(2 citation statements)

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“…Each additional tier increases the complexity of achieving a more precise assessment of the bridge's safety. The rating factor approach leads to inherently conservative safety assessments, making higher-tier procedures more appealing and advantageous 4 .…”

Section: Introductionmentioning

confidence: 99%

“…By providing a clear understanding of the risks and an individualised safety level, this approach allows for more efficient utilisation of the bridge, unlike initial safety checks, which are overly conservative and based on a hypothetical worst-case scenario. Additionally, the reliability calculations offer valuable information to optimise strengthening measures, leading to greater bridge utilisation efficiency 4 .…”

Section: Introductionmentioning

confidence: 99%

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Safety Assessment of Brazilian Concrete Bridges Through Reliability Analysis

Santos,

Bonatte,

Sousa

et al. 2024

Structural Engineering International

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This paper addresses the need for accurate and objective safety assessments of bridges in Brazil taking into account the increase in traffic load and limited funding for infrastructure. In Brazil, the usual method of ensuring bridge safety involves strengthening based on design codes using deterministic analysis and partial safety factors. This method leads to an increase in the maintenance cost of the bridges. Structural reliability assessment, a higher-tier assessment method, is recommended globally for assessing the safety of existing bridges beyond current deterministic methods. This paper presents a study that evaluates the structural safety of existing road bridges in Brazil using the semi-probabilistic method defined in Brazilian standards and the full probabilistic method. The study selected six case studies of existing reinforced and prestressed concrete bridges to evaluate their structural safety concerning current normative loads. The results suggest that the partial safety factors defined in the Brazilian standards are consistent with international standards. The reliability analysis can guarantee the bridges' safety, even with increased traffic loads, without additional costs for structural strengthening. Therefore, the paper highlights the importance of promoting reliability analysis in Brazil to ensure the safety of existing bridges and promote cost-effective and objective safety assessments.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%