Bridge Hydraulic and Scour Analysis Using FESWMS-2DH

by David C. Froehlich, (M.ASCE),



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

Stream crossings are usually designed to satisfy all engineering and enviromnental constraints at the lowest possible cost. As a result, roadway approach embankments leading to bridge crossings often constrict flood flows at high stages, creating large velocities within and near bridge openings. Erosion of channel beds near bridges is a common result. Many bridge failures, both benign and catastrophic, have been caused by excessive erosion or scour of bed materials surrounding footings of piers and abutments [see Shirole and Holt (1991) for a summary of bridge failures in the United States and their causes]. Therefore, predicting expected depths of scour is a critical element of bridge design needed to assure a safe and reliable transportation link.

Subject Headings: Scour | Bridge failures | Bridge design | Material failures | Erosion | Bridges | Bridge abutments | United States

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