Simulation of scour-pit formations under the bridge decks and around the bridge piers, due to sediment suspension and transport caused by flooding and pressure flow conditions, is of significant interest nowadays to computational fluid dynamics (CFD) and hydraulic researchers. From CFD perspective, analysis of bridge under various flooding conditions and impact of the drag and lift forces on it...

Abstract The effect of various parameters flow, sediment and geometric features the bridge on depth shape scour hole occurred underneath a deck model without pier was investigated by series experiments conducted in flume under partially fully submerged flow clear water conditions. were performed with factors such as approach depth, discharge, size, degree submergence, girder location depth. A t...

scour around bridge piers is one of the most important fields of hydraulic research. local scour around bridge piers and abutment is one of the main reasons of bridge failures. in the field of scour at the bridges, researches are more focus on scour of piers in compare with abutment. while the available information on the bridge failures required cost, the major problems are related to abutment...

Forensic engineering field surveys of recent tsunamis (Saatcioglu et al. 2005, Chock 2013) highlighted the importance scour-related damage to structures located in coastal communities. To date, only a limited number studies have investigated interaction extreme hydrodynamic flows and groups structures, none studied scour around multiple interacting with each other. One example discussed by Yeh ...

This paper investigates the influence of scour erosion on mode shapes National Renewable Energy Laboratory (NREL) 5 MW offshore wind turbine (OWT) in varying soil conditions, where modes are derived from and wave-induced accelerations. A numerical model, which considers aerodynamic hydrodynamic loading with soil-structure interaction (SSI) servo-dynamics, is developed. The superstructure modell...

Extensive numerical and analytical studies exist that focus on the scours around bridge piers with different cross-sections. However, addressing scour piles are rather limited not conclusive. Therefore, most efficient cross-section reducing local a pile group is experimentally examined herein. Accordingly, comparative scouring of three shapes, namely, circular, rectangular lenticular, investiga...

A scour monitoring system for subsea pipeline based on active thermometry is proposed in this paper. The temperature reading of the proposed system is based on a distributed Brillouin optical fiber sensing technique. A thermal cable acts as the main component of the system, which consists of a heating belt, armored optical fibers and heat-shrinkable tubes which run parallel to the pipeline. Th...

Local scour around bridge piers and abutments is one of the most significant causes failure. Despite a plethora studies on individual or abutments, few have focused joint impact pier an abutment in proximity to another scour. This study conducted laboratory experiments flow analyses examine interaction their effect clear-water The were rectangular flume. They included 18 main tests (with combin...

scour around hydraulic structures is an inevitable phenomenon . recognition of this phenomenon and dealing with it is an issue considering which will ensure the project success . local scour at piers has been reported as the most important factor in the destruction of the bridges . the use of submerged and non-submerged piles is one of the scour control methods . submerged piles have been rarel...

in this paper the effectiveness combination of bed sill and collar in reduction of local scour depth at cylindrical piers under clear water flow condition was investigated (v/vc=0.9). in the first of experiments, the bed sill was located in downstream and different distances from the piers. results indicated that minimum distance of the bed sill from the piers in downstream has maximum reductio...