Risk-based methodology for scour analysis at bridge foundations

Bento, Ana Margarida; Gomes, Andreia; Viseu, Teresa; Couto, Lúcia; Pêgo, João Pedro

doi:10.1016/j.engstruct.2020.111115

Cited by 34 publications

(14 citation statements)

References 40 publications

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“…Hence, it can be concluded that the decision-making by transport agencies is not based on the explicit evaluation of the flood risk of bridges and of the expected losses arising due to bridge failure and disregards many of the uncertainties inherent to the hazard, the data, and the models used for risk assessment (see e.g. Dikanski et al, 2018;Pizarro and Tubaldi, 2019;Bento et al, 2020).…”

Section: Current Flood Risk Management Proceduresmentioning

confidence: 99%

Invited perspectives: Challenges and future directions in improving bridge flood resilience

Tubaldi

White

Patelli

et al. 2022

Nat. Hazards Earth Syst. Sci.

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Abstract. Bridges are critical-infrastructure components of road and rail transport networks. A large number of these critical assets cross or are adjacent to waterways and floodplains and are therefore exposed to flood actions such as scour, hydrodynamic loading, and inundation, all of which are exacerbated by debris accumulations. These stressors are widely recognized as responsible for the vast majority of bridge failures around the world, and they are expected to be exacerbated due to climate change. While efforts have been made to increase the robustness of bridges to the flood hazard, many scientific and technical gaps remain. These gaps were explored during an expert workshop that took place in April 2021 with the participation of academics, consultants, and decision makers operating mainly in the United Kingdom and specializing in the fields of bridge risk assessment and management and flood resilience. The objective of the workshop was to identify and prioritize the most urgent and significant impediments to bridge flood resilience. In particular, the following issues, established at different levels and scales of bridge flood resilience, were identified and analysed in depth: (i) characterization of the effects of floods on different bridge typologies, (ii) uncertainties in formulae for scour depth assessment, (iii) evaluation of consequences of damage, (iv) recovery process after flood damage, (v) decision-making under uncertainty for flood-critical bridges, and (vi) use of event forecasting and monitoring data for increasing the reliability of bridge flood risk estimations. These issues are discussed in this paper to inform other researchers and stakeholders worldwide, guide the directions of future research in the field, and influence policies for risk mitigation and rapid response to flood warnings, ultimately increasing bridge resilience.

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Section: Current Flood Risk Management Proceduresmentioning

confidence: 99%

Invited perspectives: Challenges and future directions in improving bridge flood resilience

Tubaldi

White

Patelli

et al. 2022

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Monitoring data can significantly contribute to increasing the resilience of critical infrastructure under a wide range of hazards by providing information useful for disaster prevention, disaster mitigation, and disaster recovery (Honfi and Lange, 2015;Achillopoulou et al, 385 2020). In particular, monitoring data can be valuable for achieving a better understanding of the behaviour of critical infrastructure assets under extreme events, and for model calibration and updating at any level, from hydrological and hydraulic (Beven et al, 2005;Montanari et al, 2009;Briaud et al, 2014) to structural (e.g., Prendergast et al, 2018). Moreover, SHM improves the knowledge of the current state of the asset, and provides bridge managers with 390 useful information for prioritizing retrofit and risk reduction interventions.…”

Section: Use Of Inspection Monitoring and Forecast Datamentioning

confidence: 99%

“…Hence, it can be concluded that the decision-making by transport agencies is not based on the explicit evaluation of the flood risk of bridges and of the expected losses arising due to bridge failure, and disregards many of the 355 uncertainties inherent to the hazard, the data and the models used for risk assessment (see e.g. Dikanski et al 2018, Pizarro and Tubaldi 2019, Bento et al 2020.…”

mentioning

confidence: 99%

Invited perspectives: challenges and future directions in improving bridge flood resilience

Tubaldi

White

Patelli

et al. 2021

Preprint

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Abstract. Bridges are critical infrastructure components of road and rail transport networks. A large number of these critical assets cross or are adjacent to waterways and floodplains and are therefore exposed to flood actions such as scour, hydrodynamic loading and inundation, all of which are exacerbated by debris accumulations. These stressors are widely recognised as responsible for the vast majority of bridge failures around the world. While efforts have been made to increase the robustness of bridges to the flood hazard, many scientific and technical gaps remain. These gaps were explored during an expert workshop that took place in April 2021 with the participation of academics, consultants and decision makers operating in the United Kingdom and specialised in the fields of bridge risk assessment and management and floods. In particular, the following issues, established at different levels and scales of bridge flood resilience, were analysed: (i) characterization of the effects of floods on different bridge typologies, (ii) inaccuracy of formulae for scour depth assessment, (iii) evaluation of consequences of damage, (iv) recovery process after flood damage, (v) decision-making under uncertainty, and (vi) use of event forecasting and monitoring data for increasing the reliability of bridge flood risk estimations. These issues are discussed in this paper to inform other researchers and stakeholders worldwide, guide the directions of future research in the field, and influence policies for risk mitigation and rapid response to flood warnings, ultimately increasing bridge resilience.

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“…In the long-span bridge construction and operation process, the construction platform and pier foundation are affected by water scouring and other factors [ 1 , 2 , 3 , 4 ]. This can cause dynamic softening of pier foundation [ 5 ], material erosion and aging, and attenuation of structural components and overall resistance, thus affecting the safety and durability of the structure [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Design of Flow Velocity and Direction Monitoring Sensor Based on Fiber Bragg Grating

Zhang

Zhong

Duan

et al. 2021

Sensors

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The real-time monitoring of the flow environment parameters, such as flow velocity and direction, helps to accurately analyze the effect of water scour and provide technical support for the maintenance of pier and abutment foundations in water. Based on the principle of the Fiber Brag Grating sensor, a sensor for monitoring the flow velocity and direction in real-time is designed in this paper. Meanwhile, the theoretical calculation formulas of flow velocity and direction are derived. The structural performance of the sensor is simulated and analyzed by finite element analysis. The performance requirements of different parts of the sensor are clarified. After a sample of the sensor is manufactured, calibration experiments are conducted to verify the function and test the accuracy of the sensor, and the experimental error is analyzed. The experimental results indicate that the sensor designed in this paper achieves a high accuracy for the flow with a flow velocity of 0.05–5 m/s and the flow velocity monitoring error is kept within 7%, while the flow direction monitoring error is kept within 2°. The sensor can meet the actual monitoring requirements of the structures in water and provide reliable data sources for water scour analysis.

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Risk-based methodology for scour analysis at bridge foundations

Cited by 34 publications

References 40 publications

Invited perspectives: Challenges and future directions in improving bridge flood resilience

Invited perspectives: Challenges and future directions in improving bridge flood resilience

Invited perspectives: challenges and future directions in improving bridge flood resilience

Design of Flow Velocity and Direction Monitoring Sensor Based on Fiber Bragg Grating

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