Hybrid Scour Depth Prediction Equations for Reliable Design of Bridge Piers

Numerous models have been proposed in the past to predict maximum scour depth around bridge piers. These studies all focused on different parameters that could affect and model accuracy. One of main individuated is critical velocity approaching flow. The present study aimed at investigating effect equations determine flow accuracy for estimating Here, 10 estimation equations, which include as one influencing parameters, 8 were examined, a total combination 80 hybrid models. In addition, sensitivity analysis selected was investigated. results compared with experimental data, best identified using statistical indicators. models, including YJAF-VRAD, YJAF-VARN, YJAI-VRAD also evaluated field data available literature. Finally, correction factors implied increase their predicting depth.