Multiflood and multilayer method for scour rate prediction at bridge piers Academic Article uri icon


  • The SRICOS method was proposed in 1999 to predict the scour depth versus time curve at a cylindrical bridge pier for a constant velocity flow, a uniform soil, and a deep-water condition. In this article, the method is extended to include a random velocity-time history and a multilayer soil stratigraphy; it is called the Extended-SRICOS or E-SRICOS. The algorithms to accumulate the effects of different velocities and to sequence through a series of soil layers are described. The procedure followed by the computer program to step into time is outlined. A simplified version of E-SRICOS called S-SRICOS is also presented; calculations for the S-SRICOS method can easily be done by hand. Eight bridges in Texas are used as case histories to compare predictions by the two new methods (E-SRICOS and S-SRICOS) with measurements at the bridge sites.

published proceedings


author list (cited authors)

  • Briaud, J. L., Chen, H. C., Kwak, K. W., Han, S. W., & Ting, F.

citation count

  • 43

complete list of authors

  • Briaud, JL||Chen, HC||Kwak, KW||Han, SW||Ting, FCK

publication date

  • February 2001