“Societies and businesses rely heavily on transportation infrastructure. Thus, the reliable assessment of their vulnerability and the associated risks to critical hazards is an urgent need of paramount importance toward resilient transportation networks.”

examples of bridge failure due to hydraulic hazards (e.g. scour, debris accumulation, drag forces)

In response to the above urgent need we deliver solutions for the Quantitative Risk Assessment of transportation infrastructure, by integrating:

  • adaptive fragility models that account for the deterioration of assets (ageing and previous hazard effects) and  improvements (retrofitting/strengthening)
  • risk and loss assessment of transportation networks exposed to natural hazards, toward efficient allocation of resources in decision-makingand disaster management
  • advanced numerical models of transportation systems of assets subjected to critical combinations of geo- and climatic hazards
  • diverse transportation assets: bridges, embankments, cuts, tunnels, retaining structures
  • multiple hazards: floods, hydraulic actions, earthquakes, landslides, ground movements

numerical modelling of integral bridge-embankments-foundation soil

fragility surface for a bridge exposed to flood-induced scour and earthquake excitations

fragility curves for highway and railway integral bridges exposed to earthquake hazard (Source: Argyroudis S, Mitoulis S, Kaynia AM, Winter MG, 2018. Fragility assessment of transportation infrastructure systems subjected to earthquakes. Geotechnical Earthquake Engineering and Soil Dynamics V, June 10-13, Austin, Texas, USA)

numerical modelling of scour (caused by flood) under foundation of bridge abutment (2D model)

numerical model of bridge exposed to scour caused by flood (3D model). See fragility functions here: Argyroudis SA, Mitoulis SA (2021). Vulnerability of bridges to individual and multiple hazards – floods and earthquakes, Reliability Engineering & System Safety, 210, 107564.

numerical modelling of embankment and foundation soil

adaptive fragility curves for highway and railway embankments exposed to flood and earthquake hazard (Source: Argyroudis S, Mitoulis S, Winter MG, Kaynia AM, 2018. Fragility of critical transportation infrastructure systems subjected to geo-hazards. 16th European Conference on Earthquake Engineering, June 18-21, Thessaloniki, Greece)

Fragility functions for road embankments under combined moisture ingress and scour effects. Scour hole at the toe ranges from 0.5m (lower) to 3.0m (upper bound). WIM is the normalised water table (Source: McKenna G, Argyroudis S, Winter M, Mitoulis S (2020). Multiple hazard fragility analysis for granular highway embankments: moisture ingress and scour. Transportation Geotechnics, 26, 100431)

Major collaborations:

Norwegian Geotechnical Institute (NGI)

TRL The Future of Transport

JBA Trust

Funding received:

H2020-MSCA-IF-2016 | TRANSRISK project

EPSRC Bursary Scheme (2018)

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