Improved bridge pier collar for reducing scour

作     者：Christopher Valela Colin David Rennie Ioan Nistor Christopher Valela;Colin David Rennie;Ioan Nistor

作者机构：Department of Civil Engineering University of Ottawa 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2022年第37卷第1期

页      面：37-46页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0903[农学-农业资源与环境] 0816[工学-测绘科学与技术] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) through Discovery Grants and the Alexander Graham Bell Canada Graduate Doctoral(CGS D) Scholarship 

主　　题：Bridge pier Scour Horseshoe vortex Pier collar Scour countermeasure 

摘      要：This study performed a bridge pier collar comparison for the purpose of reducing scour,while introducing a new collar *** new collar,referred to as Collar Prototype Number 3,was designed based on an equilibrium scour hole and provides a method of controlling the horseshoe *** modelling was utilized to show the flow field and bed shear stress as a result of using Collar Prototype Number 3.A prototype model of Collar Prototype Number 3 and a flat plate collar were constructed for the purpose of comparing both experimentally under different flow *** Prototype Number 3 proved to be an effective device as it reduced scour in terms of the maximum depth downstream of the pier and overall volume,in some instances,by up to 69.7%and 75.7%,***,Collar Prototype Number 3 outperformed the flat plate collar,especially because,unlike the flat plate collar,Collar Prototype Number 3 did not experience undermining.