Abstract
ABSTRACT Bridge pier scour is an important issue for safety evaluation of bridges. The existing scour depth prediction equations for bridge piers are mostly deterministic in nature, which do not incorporate the uncertainties due to scour parameters, selection of model and limited information about data. To incorporate these uncertainties, a reliability-based assessment of bridge pier scour is required. An attempt has been made herein to develop a reliability-based scour depth prediction model for live bed scour at bridge piers. An object-oriented constrained optimization technique of the first-order reliability method has been used for the reliability analysis. The influence of uncertainties, type of probability distribution and correlation among the basic input parameters on the failure probability have been studied in detail. To achieve the desired safety level in the design of pier foundation for the live bed scour, the reliability-based safety factor is proposed. A sensitivity analysis has also been carried out to obtain the effect of the individual random variables on the reliability of pier scour.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call