Hydraulic performance of river bridges and other structures at high flows: scoping study
A review of the range of ways of estimating afflux used in the UK and other countries, and the supporting science.
Documents
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Details
Background
Bridges and other structures can have a considerable effect on flood levels during high flows and can cause flooding if blockages occur. Hydraulic modelling needs to take account of such structures but there’s a lack of consistent approach. Various methods are used, not all of which are relevant for any particular structure, channel geometry or flow conditions.
Objectives
This project aimed to:
- review existing knowledge and methods to support practitioners when choosing appropriate ways of estimating afflux at structures
- identify future research that would improve knowledge and tools available to practitioners
- provide the science to support decision-making
Outcome
This scoping study reviews the range of methods of estimating afflux used in the UK and other countries, in part through a questionnaire survey of selected practitioners. It identifies where further research is needed.
This project ran from 2001 to 2004.