Research project

Assessment, Costing and Enhancement of Long-Life, Long-Linear Assets (ACHILLES)

Project overview

ACHILLES was led by Newcastle University and also included universities at Bath, Durham, Leeds and Loughborough, as well as the British Geological Survey. 'Transportation group' worked closely with the 'Infrastructure group' at the University of Southampton.

ACHILLES focused on long-linear assets that are critical to the delivery of services over long distances such as road and rail embankments and cuttings, pipeline bedding and flood protection structures. Transportation group’s work provided economic forecasting and decision support at the asset, route and network levels. More specifically, a model of Whole Life Costs of interventions was developed and the social costs of service disruptions considered. Risks and uncertainty were analysed using Monte Carlo Simulation within a Bayesian hierarchical structure. Decision making using a variant of minimax regret has been developed.

An analysis of infrastructure assets on the London–Bristol corridor has been undertaken as part of a Simulation and Modelling theme (SaM). This then contributed to the Design and Decision (DaD) theme which also considered the cost and benefits of improved information, for example from remote monitoring of slope condition.

Further information is available from the ACHILLES website.

Staff

Lead researcher

Dr Joel Smethurst BEng PhD GMICE FHEA

Associate Professor

Research interests

  • The effects of vegetation and climate on the performance of earthworks (cuttings and embankments)
  • The stabilisation of both infrastructure slopes and large landslides using discretely spaced piles
  • The mechanical stabilisation of soil by plants roots
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Other researchers

Professor William Powrie

Professor of Geotechnical Engineering

Research interests

  • Railway track and trackbed behaviour and performance
  • Geotechnical transportation infrastructure (earthworks, retaining walls, tunnels)
  • Groundwater and groundwater control
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Professor John Preston

Professor in Rail Transport

Research interests

  • Demand, capacity and cost modelling for sustainable transport infrastructure.
  • The design, monitoring and evaluation of transport interventions designed to promote sustainable choices.
  • The determination of pathways for future mobility transitions to net zero carbon.
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Collaborating research institutes, centres and groups

Research outputs

Kevin M. Briggs, Yuderka Trinidad González, William Powrie, Simon Butler & Nick Sartain, 2023, Quarterly Journal of Engineering Geology and Hydrogeology, 57(1)
Type: article
K.M. Briggs, F.A. Loveridge & S. Glendinning, 2017, Engineering Geology, 219, 107-117
Type: article