Prediction of scour depth versus time for bridge piers in the case of multi-flood and multi-layer soil system

Abstract

A new method called E-SRICOS is proposed to predict the scour depth z versus time t curve around bridge piers. The E-SRICOS method is based on the SRICOS method which was developed in 1999 to predict the scour depth versus time curve around a cylindrical bridge pier for a constant velocity flow and for a uniform soil. The SRICOS method is improved to be applied to real cases that soil is non-homogeneous and velocity varies with time. The new methodologies to handle the multi-flood and the multi-layer soil systems are introduced and included in the computer program called the SRICOS program. This E-SRICOS method with the SRICOS program is verified against full-scale scour measurements.