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 Slopes facing reservoir water often collapse, affecting capacity. It is important to understand the factors such collapses and predict locations of collapse after impoundment for practical purposes. However, mechanism bank in mountainous areas remains unclear. To address this issue, field geotechnical property surveys, laboratory tests, numerical simulations were employed evaluate susc...

3D mats are environmentally friendly and ecological materials for protecting river waterway banks. The anti-scour properties of the erosion resistance soil under them can be studied to provide decision support selection slope protection their applicable areas. In this paper, an indoor prototypical scouring experiment with a flume is carried out study three types mat (vegetation grass mats, Enka...

Scour around monopiles supporting Offshore Wind Turbines (OWT) may cause a significant reduction in the foundation capacity and natural frequencies of soil–structure system. The decommission two at Robin Rigg wind farm after only six years operation due to massive unexpected scour demonstrates hazard that an active marine environment poses OWT. Assessing predicting quantitative impact on monopi...