Results 51 to 60 of about 6,112,351 (103)

Study of the time-dependent clear water scour around circular bridge piers

open access: yesJournal of Hydrology and Hydromechanics, 2017
The local scour around bridge piers influences their stabilities and plays a key role in the bridge failures. The estimation of the maximum possible scour depth around bridge piers is an important step in the design of the bridge pier foundations.
Aksoy Aysegul Ozgenc   +3 more
doaj   +1 more source

Numerical Investigation of Local Scour Around Double Triangular Prisms Using a DBM–LBM Coupled Model

open access: yesJournal of Marine Science and Engineering
Local scour is a typical hydro-sediment coupled process around near-bed obstacles. Its intensity and spatial distribution are jointly controlled by the surrounding-flow structure, sediment transport, and bed-feedback deformation.
Keyao Li, Aojie Sun, Yong Peng
doaj   +1 more source

Scour-inducing flow around gravity anchors astride pipelines in currents

open access: yes, 2014
This study simulated steady currents travelling past gravity anchors astride pipelines wallmounted on an immobile bed. Three-dimensional governing equations were solved with a Petrov–Galerkin finite element method.
L Cheng   +5 more
core   +1 more source

Influence of flow unsteadiness on local scour at bridge piers: An energy-based perspective

open access: yesInternational Journal of Sediment Research
Local scour at piers is a major cause of bridge failures worldwide. While most existing studies assume steady flow conditions, actual flood events are inherently unsteady, with distinct rising and falling limbs that significantly modify scour dynamics ...
Qigang Chen   +3 more
doaj   +1 more source

Impacts of coastal vegetation on tsunami-induced overtopping scour behind embankments and local scour around buildings

open access: yesApplied Ocean Research
This study experimentally investigates the role of coastal vegetation in adjusting tsunami-induced overtopping scour behind embankments and local scour around buildings.
Ying-Tien Lin   +3 more
doaj   +1 more source

Temporal variation of clear-water scour at compound Abutments

open access: yesAin Shams Engineering Journal, 2016
Most of actual abutments in rivers are built on foundation, while there is limited number of study available on the effects of the foundation on the local scour.
Aminuddin Ab. Ghani, Reza Mohammadpour
doaj   +1 more source

On local scour around spur dikes

open access: yes, 2000
Estimation of possible maximal scour depth around the head of spur dikes is an important step in the design of spur dikes foundation. This paper briefly analyses the characteristics of flow pattern and the complex eddy structure near the head of the spur
李家春, Chan L, 刘青泉
core   +1 more source

The Effect of Geotextile Layer in Decreasing Local Scour of Cylindrical Bridge Pier

open access: yesعلوم آب و خاک, 2017
Flood currents are considered threatening factors by creating local scour along bridge piers. One method for decreasing local scour is to strengthen the bed against imposed tensions.
A. NOURI IMAMZADEHEI   +3 more
doaj  

Experimental Investigation of Scour Around Tripod Foundations Under Steady Current

open access: yesJournal of Marine Science and Engineering
Scour around a tripod foundation under a steady current is investigated experimentally. Experiments are conducted on three tripod foundation models and three flow-angle-of-attack conditions. The three tripod foundations differ only in the size of the top
Muhammad Adnan   +5 more
doaj   +1 more source

Hazards due to large wood accumulations: Local scour and backwater rise

open access: yesE3S Web of Conferences, 2018
Large wood (LW) in rivers increases the flow variability and provides habitats for various species. During flood events, transported logs can accumulate at river infrastructures and increase the flood hazard.
Schalko Isabella   +3 more
doaj   +1 more source

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