Comparison study on computer simulations for bridge scour estimation

Xinbao Yu, Junliang Tao, Xiong Yu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper compares the use of 1D and 2D hydraulic models for bridge scour prediction. Two representative computational software developed by Federal Highway Administration (FHWA), HEC-RAS and Flo2dh, are used as the benchmark comparison bases. The procedures for model construction and scour estimation are illustrated by developing simulation examples. The comparison shows that 1D model using HEC-RAS, while is easy to construction, does not account for the effects of flow disturbance due to hydraulic obstructions. These include the spatial variation of the alignment angle, which significantly affects the depth of scour prediction. Higher dimensional mode such as Flo2dh captures the effects of flow field distribution. It is however difficult to use and requires deliberations to run proper simulations. Further development of computational simulation and visualization technologies is necessary and will help place computer aided bridge scour simulations into the hands of practitioners.

Original languageEnglish (US)
Title of host publicationGeoRisk 2011
Subtitle of host publicationGeotechnical Risk Assessment and Management - Proceedings of the GeoRisk 2011 Conference
Pages1125-1132
Number of pages8
Edition224 GSP
DOIs
StatePublished - Aug 25 2011
Externally publishedYes
EventGeoRisk 2011: Geotechnical Risk Assessment and Management - Atlanta, GA, United States
Duration: Jun 26 2011Jun 28 2011

Publication series

NameGeotechnical Special Publication
Number224 GSP
ISSN (Print)0895-0563

Conference

ConferenceGeoRisk 2011: Geotechnical Risk Assessment and Management
CountryUnited States
CityAtlanta, GA
Period6/26/116/28/11

Keywords

  • Bridges
  • Comparative studies
  • Geohazards
  • Scour
  • Simulation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Yu, X., Tao, J., & Yu, X. (2011). Comparison study on computer simulations for bridge scour estimation. In GeoRisk 2011: Geotechnical Risk Assessment and Management - Proceedings of the GeoRisk 2011 Conference (224 GSP ed., pp. 1125-1132). (Geotechnical Special Publication; No. 224 GSP). https://doi.org/10.1061/41183(418)123