Results 11 to 20 of about 39,640 (314)

Simplified analysis of dynamic response of pile-supported bridge under local scour and verification by centrifugal shaking tests

open access: yesYantu gongcheng xuebao, 2021
Scour causes the erosion of soil, changes the seismic response of site, and also influences the seismic properties of bridge. To investigate the dynamic behavior and damage potential of pile-supported bridges at local scour site, the effects of scour on ...
LIANG Fa-yun 1, LIANG Xuan 1, ZHANG Hao 2
doaj   +1 more source

Clean Cut (adaptive, multimodal surgical infection prevention programme) for low‐resource settings: a prospective quality improvement study

open access: yesBJS (British Journal of Surgery), EarlyView., 2020
Clean Cut is a multimodal, adaptive, checklist‐based infection prevention programme designed to improve compliance with six critical perioperative infection prevention practices. After introducing the programme at five hospitals in Ethiopia, compliance with critical infection prevention standards significantly improved and the relative risk of ...
J. A. Forrester   +16 more
wiley   +1 more source

A local scour prediction method for pile caps in complex piers [PDF]

open access: yes, 2011
The outcomes of an experimental study on local scour at a pile cap are presented. Experiments were conducted with the approaching flow having an undisturbed flow depth and a threshold flow velocity.
Abdul Aziz, Azlan   +4 more
core   +1 more source

A Review on Recent Development of Numerical Modelling of Local Scour around Hydraulic and Marine Structures

open access: yesJournal of Marine Science and Engineering, 2022
This paper reviews the recent development of numerical modelling of local scour around hydraulic and marine structures. The numerical models for simulating local scour are classified into five categories: sediment transport rate models, two-phase models,
Ming Zhao
doaj   +1 more source

Research on the Wing-Type Antiscour Device of Pier Based on Scour Test and Numerical Simulation

open access: yesAdvances in Civil Engineering, 2021
In order to reduce the local scour before the antiscour device of piers, this paper proposed an improvement on a “V-type” device. That was to say, wing plates were set on the surface of the “V-type” device to enhance the diversion and reduce the local ...
Yan Wang   +4 more
doaj   +1 more source

Using a Bed Sill as a Countermeasure for Clear-Water Scour at a Complex Pier with Inclined Columns Footed on Capped Piles

open access: yesHydrology, 2022
River bridge piers may collapse due to the local scour around their foundations. It is known that local scour is an effect of the three-dimensional flow field that develops near the pier and that the geometric complexity of a non-cylindrical pier may ...
Mahdi Esmaeili Varaki   +2 more
doaj   +1 more source

Numerical modelling of erosion and sedimentation around offshore pipelines [PDF]

open access: yes, 1990
In this paper a numerical model is presented for the description of the erosion and sedimentation near pipelines on the sea bottom. The model is based on the Navier-Stokes equations and the equation of motion and continuity of sediment.\ud \ud The ...
Beek, F.A. van, Wind, H.G.
core   +3 more sources

Physical Modeling of Local Scouring around Bridge Piers in Erodable Bed

open access: yesJournal of King Saud University: Engineering Sciences, 2007
The construction of bridges in alluvial channels will cause a contraction in the waterway at the bridge site. The contraction in the waterway will cause a significant scour at that site.
Thamer Ahmed Mohammed   +4 more
doaj   +1 more source

Using side flow jets as a scour countermeasure downstream of a sluice gate

open access: yesBeni-Suef University Journal of Basic and Applied Sciences, 2021
Background Local scour is one of the main problems affecting the stability and operation of control hydraulic structures. Many techniques were used to control the resulting scour.
Mohamed S. Abdelmoaty, Mahmoud Zayed
doaj   +1 more source

Numerical Simulation on the Local Scour Processing and Influencing Factors of Submarine Pipeline

open access: yesJournal of Marine Science and Engineering, 2023
To investigate the different influencing characteristics of local scour around submarine pipelines, hydrodynamic and sediment transport two-dimensional models based on Flow-3D are used to numerically simulate the local scour around the pipeline under ...
Ke Hu, Xinglan Bai, Murilo A. Vaz
doaj   +1 more source

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