Resilience of aging structures and infrastructure systems with emphasis on seismic resilience of bridges and road networks: Review

Resilient Cities and Structures, Journal Year: 2022, Volume and Issue: 1(2), P. 23 - 41

Published: June 1, 2022

Risk assessment and mitigation programs have been carried out over the last decades in attempt to reduce transportation infrastructure downtime post-disaster recovery costs. Recently, concept of resilience gained increasing importance design, assessment, maintenance, rehabilitation structures systems, particularly bridges networks, exposed natural man-made hazards. In field disaster mitigation, frameworks proposed provide a basis for development qualitative quantitative models quantifying functionality at various scales, including components, groups systems within networks communities. these frameworks, effects aging environmental aggressiveness must be explicitly considered, affecting structural performance civil systems. Significant efforts made incorporate risk into informed decision making decide how best use resources minimize impact hazards on This review paper is part efforts. It presents an overview main principles concepts, methods strategies, advances accomplishments life-cycle reliability, with emphasis seismic road networks.

Language: Английский

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Restoration models for quantifying flood resilience of bridges

Engineering Structures, Journal Year: 2021, Volume and Issue: 238, P. 112180 - 112180

Published: April 22, 2021

Language: Английский

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Flood characterization based on forensic analysis of bridge collapse using UAV reconnaissance and CFD simulations

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 822, P. 153661 - 153661

Published: Feb. 3, 2022

Flash floods are common manifestations of extreme weather events and one the most severe natural hazards. In Europe, they have been responsible for 359 fatalities an economic loss totalling 67 million USD in past decade (EM-DAT), while their increasing severity is linked to climate change. Nevertheless, flash remain a poorly documented phenomenon due lack flow intensity data many affected watersheds. Based on thorough field investigation, including UAV-based 3D mapping material characterization with on-site testing, we carry out numerical study notable flood that caused collapse bridges buildings Central Greece, following recent Mediterranean hurricane. Focusing carefully selected case study, combine modelling flow-structure interaction detailed mechanical nonlinear structural response reproduce flood-induced fracture bridge abutment. Back-analysis this failure responds fundamental problem estimating undocumented magnitude event. The paper estimates lower bound value velocity at studied location. This can be valuable input interpretation extensive damage took place downstream re-assessment risk region where similar expected become more frequent because approach, disaster forensics engineering analysis used fill gap missing real-time measurements, implemented posteriori estimation events. well-documented flooding also validation future experimental methods motivate investigations mechanisms governing flow-soil-structure river crossings.

Language: Английский

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

Natural hazards and earth system sciences, Journal Year: 2022, Volume and Issue: 22(3), P. 795 - 812

Published: March 10, 2022

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

Language: Английский

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Sustainability and climate resilience metrics and trade-offs in transport infrastructure asset recovery

Transportation Research Part D Transport and Environment, Journal Year: 2023, Volume and Issue: 121, P. 103800 - 103800

Published: June 9, 2023

Climate change exacerbates natural hazards and continuously challenges the performance of critical infrastructure. Thus, climate resilience sustainable adaptation infrastructure are paramount importance. This paper puts forward a novel framework metrics for optimising sustainability (Greenhouse Gas emissions - GHG), (restoration time), cost. The aims to facilitate decision-making by operators stakeholders communicate actionable trade-offs between these principles. It describes approaches quantifying ex-ante ex-post recovery from lenses using relevant metrics. concludes with an application on bridge, where normalised integrated into one unique index (ISRC), which can be used in prioritisation portfolios similar assets. optimisation program includes bridge recovery, while reducing GHG emissions. impact indexes is examined results show how optimum solutions adversely affected different projections. In all scenarios examined, more leading reduced (tCO2e) when weighing Based case study analysed this paper, low carbon restoration strategy resulted up 50% higher ISRC, justify investments strategies transport

Language: Английский

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Review of Hydraulic Bridge Failures: Historical Statistic Analysis, Failure Modes, and Prediction Methods

Journal of Bridge Engineering, Journal Year: 2023, Volume and Issue: 28(4)

Published: Feb. 6, 2023

Hydraulic factors have become the principal causes of bridge failures since 1990s. They account for around 50% in database constructed by present authors. generally occur without early warning, with significantly destructive results. These kinds are expected to continue future due increasing climate change all over world. This paper is intended a comprehensive review up-to-date work on hydraulic three factors: scour, flood, and floe ices. First, we conduct historical statistic analysis failures, especially focusing features, based 1,700 cases collected past 200 years. Then, failure modes prediction methods ices, respectively, discuss some relevant examples applications adopted current practices. The aim this provide concise but summary information needed researchers engineers understand mechanisms bridges how practices deal these issues. Much has been dedicated determining what research required furtherly subject find improved solutions existing problems. We hope that will

Language: Английский

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Conflict-resilience framework for critical infrastructure peacebuilding

Sustainable Cities and Society, Journal Year: 2023, Volume and Issue: 91, P. 104405 - 104405

Published: Jan. 13, 2023

Apart from security issues, war-torn societies and countries face immense challenges in rebuilding damaged critical infrastructure. Existing post-conflict recovery frameworks mainly focus on social impacts mitigation. Also, existing for resilience to natural hazards are based design intervention, yet, they not fit infrastructure a number of reasons explained this paper. Post-conflict peacebuilding can be enhanced when by assessment (RBA) is employed, using standoff observations that include data disparate remote-sensing sources, e.g. public satellite imagery, forensics crowdsourcing, collected during the conflict. This paper discusses why conflicts warfare require new framework achieving resilience. It then introduces novel includes different scales with asset regional considers levels knowledge, data-driven assessments facilitate prioritisation reconstruction. The applied transport network area west Kyiv, Ukraine demonstrate how support decision-makers, such as governments multilateral financial institutions, address needs accelerate humanitarian assistance, absorb shocks maximise after

Language: Английский

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Seismic performance assessment of a sea-crossing cable-stayed bridge system considering soil spatial variability

Reliability Engineering & System Safety, Journal Year: 2023, Volume and Issue: 235, P. 109210 - 109210

Published: March 1, 2023

Language: Английский

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Multi-hazard life-cycle consequence analysis of deteriorating engineering systems

Structural Safety, Journal Year: 2024, Volume and Issue: 111, P. 102515 - 102515

Published: July 20, 2024

Probabilistic life-cycle consequence (LCCon) analysis (e.g., assessment of repair costs, downtime, or casualties over an asset's service life) can enable optimal management critical assets under uncertainties. This lead to effective risk-informed decision-making for future disaster (i.e., risk mitigation and/or resilience-enhancing strategies/policies). Nevertheless, despite recent advances in understanding, modeling, and quantifying multiple-hazard (or multi-hazard) interactions, most available LCCon analytical formulations fail accurately compute the exacerbated consequences, which may be due incomplete absent actions between different interacting hazard events. paper introduces a discrete-time, discrete-state Markovian framework efficient multi-hazard deteriorating engineering systems buildings, infrastructure components) that appropriately accounts complex interactions natural-hazard events their effects on system's performance. The assumption is used model probability system being any performance level limit state) after multiple inducing either instantaneous gradual deterioration potential through implementing stochastic (transition) matrices. estimates are then obtained by combining state distributions with suitable system-level models computationally manner. proposed illustrated two case studies subject earthquake flood events, as well environment-induced corrosion during life. first reinforced concrete building second transportation road network bridge.

Language: Английский

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Bridge-specific flood risk assessment of transport networks using GIS and remotely sensed data

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 850, P. 157976 - 157976

Published: Aug. 11, 2022

A novel framework for the expedient assessment of flood risk to transportation networks focused on response most critical and vulnerable infrastructure assets, bridges, is developed, validated applied. Building upon recent French guidelines scour (CEREMA, 2019), this paper delivers a thorough methodology, that incorporates three key, parameters: (i) hydrodynamic loading, hazard component equal significance scour, hazard; (ii) correlation select indicators with new index relating flow velocity, primary measure adverse impacts flow–structure interaction, enabling more accurate automated, bridge susceptibility scour; (iii) use new, comprehensive indicator, namely Indicator Flood Hazard Intensity (IFHI) which incorporates, in simple yet efficient way, key parameters controlling severity impact floodwater height, obstruction, sediment type. The implemented analysis case study area, considering an inventory 117 bridges diverse construction characteristics, were affected by major impacted Greece September 2020. reliability method against extensive record inspected documented damages. Regional scale facilitated adoption Multi-Criteria Decision-Making indexing, geomorphological, meteorological, hydrological, land use/cover data, based processing remotely sensed imagery openly available geospatial datasets GIS.

Language: Английский

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