Abstract Foundation scour can have a detrimental effect on the performance of bridge piers, inducing significant reduction lateral capacity footing and accumulation permanent settlement rotation. Although hydraulic processes responsible for foundation are nowadays well known, predicting their mechanical consequences is still challenging. Indeed, its impact failure mechanisms developing around h...

This paper uses nonlinear regression, Artificial Neural Network (ANN) and Genetic Programming (GP) approaches for predicting an important tangible issue i.e. scours dimensions downstream of inverted siphon structures. Dimensional analysis and nonlinear regression-based equations was proposed for estimation of maximum scour depth, location of the scour hole, location and height of the dune downs...

number of spatial competitors (Supplemental information). These 'indicators' appeared stable up to 2006 but have decreased abruptly since. Mean percentage cover by encrusting fauna was >26% before 2006 and has been <23% since (%cover significantly decreased with increased ice scour; one-way ANOVA, F = 3.9, p = 0.011). The major space occupiers, bryozoans, dominated this assemblage in terms of r...

Every year a large number of bridges flooding in the river just when they most need them there destroy all born. Carried out. In this study, the four fulcrum forms a semi-circular, trapezoidal, rectangular edges rounded rectangle 90 degrees at 70 degrees in Sagittarius with four different discharges depth of constant scouring around the abutment in pure water were examined. For material of flum...

Local scour around a submarine piggyback pipeline in combined waves and current is investigated experimentally. Based on the experimental results, evolution morphology are firstly analyzed. Then, comparison with equilibrium depth Seq between present data predicted results conducted. After that, correlation dimensionless timescale T* maximum Shields parameter ?cw investigated, formula obtained t...

Scour is one of the main causes bridge failures resulting in significant macro-economic impacts, often beyond direct costs infrastructure damage. Given pressure to increase resilience transport networks, ageing infrastructure, constrained budgets, variable knowledge asset conditions and limited data, mixed ownership operation bridges, concerns about risks climate change, there a need implement ...

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...