Time-dependent scour depth under bridge-submerged flow

J. Guo, K. Kerenyi, H. Shan, Z. Xie, Y. Zhai, L. Zhao

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

1 Scopus citations

Abstract

Current practice for determining the scour depth at a bridge crossing is based on the equilibrium scour depth of a design flood (e.g., 50-year, 100-year, and 500-year flood events), which is unnecessarily larger than a real maximum scour depth during a bridge life span since the peak flow period of a flood event is often much shorter than the corresponding scour equilibrium time. The objective of this study was to present a design method for time-dependent scour depth under bridge-submerged flow. To this end, a series of flume experiments on scour depth under bridge-submerged flow were conducted to collect scour data at different times. A semi-empirical model for estimating time-dependent scour depth was then presented based on the mass conservation of sediment, which agrees very well with the collected data. The proposed method can appropriately reduce the design depth of bridge scour according to design flow and a peak flow period, which can translate into significant savings in the construction of bridge foundations.

Original languageEnglish (US)
Title of host publicationScour and Erosion
Pages105-114
Number of pages10
Edition210 GSP
DOIs
StatePublished - 2010
Event5th International Conference on Scour and Erosion - San Francisco, CA, United States
Duration: Nov 7 2010Nov 10 2010

Publication series

NameGeotechnical Special Publication
Number210 GSP
ISSN (Print)0895-0563

Other

Other5th International Conference on Scour and Erosion
CountryUnited States
CitySan Francisco, CA
Period11/7/1011/10/10

ASJC Scopus subject areas

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

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  • Cite this

    Guo, J., Kerenyi, K., Shan, H., Xie, Z., Zhai, Y., & Zhao, L. (2010). Time-dependent scour depth under bridge-submerged flow. In Scour and Erosion (210 GSP ed., pp. 105-114). (Geotechnical Special Publication; No. 210 GSP). https://doi.org/10.1061/41147(392)9