Scour is a significant issue for bridges worldwide that influences the global stiffness of bridge structures and hence alters dynamic behaviour these systems. For first time, this article presents new approach to detect scour at shallow pad foundations, using decentralized modal analysis through re-deployable accelerometers extract information. A numerical model with four simply supported spans...

Abstract Employment of protective structures is vital for reducing the effect local scour created surrounding bridge piers. One most effective used controlling and piers collars. Hence, research on mechanism scouring combination pier collar as well reduction great significance. In this study, various width-to-pier width ratios parameters rectangular has been investigated experimentally in 180-d...

One of the most common problems for river engineers is accumulation waterborne debris upstream bridge piers. In addition to reducing cross-sectional flow area, increases drag force exerted pier and contributes scour. Several studies have been carried out by previous researchers examine usefulness different types countermeasures. The effectiveness these countermeasures not well understood when o...

Soil scour near a bridge pier foundation is one of the leading causes failures. Traditional vibration-based monitoring methods are nearly incapable quantifying levels using single acceleration response without knowledge excitation information. In this paper, new output-only level prediction method introduced via integration an unscented Kalman filter (UKF), random decrement (RD), and newly deri...