中国海洋大学学报（自然科学版）2025，Vol.55Issue(7)：56-62,7.DOI:10.16441/j.cnki.hdxb.20240105
多孔护圈对复合式基础的冲刷防护研究
Study of Scour Protection of Composite Foundations by Multihole Collar
摘要
Abstract
Based on the theory of scour protection,a multihole collar for composite foundation was de-signed,and the effects of collar width,thickness,and pore structure on the water flow around the foun-dation,the morphology of scour pits,and the time course characteristics of scour were investigated by using Flow-3D software.The results show that increasing the width of the multihole collar can reduce the strength of the horseshoe vortex in front of the pile and reduce the vortex structure near the founda-tion;increasing the thickness of the multihole collar can weaken the strength of the tail vortex,resul-ting in siltation of sediments downstream of the foundation;and the pore structure can disrupt the boundary layer of the water flow near the collar and reduce the local scour around the foundation.A-mong them,the thickness of the retaining collar has the most significant effect on the scour protection performance of the multihole collar,when the multihole collar thickness was increased from 2 mm to 3 mm,the maximum scour depth near the foundation was reduced by 29.08％and the start of scouring was delayed by almost 2.5 times.关键词
多孔护圈/Flow-3D软件/局部冲刷/冲刷防护Key words
multihole collar/flow-3D software/localized scour/scour protection分类
土木建筑引用本文复制引用
刘红军,李祺恒,朱成浩,杨金木..多孔护圈对复合式基础的冲刷防护研究[J].中国海洋大学学报（自然科学版）,2025,55(7):56-62,7.基金项目
国家自然科学基金项目(41572247) （41572247）
中央高校基本科研业务费专项(202161038,202261063)资助Supported by the National Natural Science Foundation of China(41572247) （202161038,202261063）
the Fundamental Research Funds for the Central Univer-sities(202161038,202261063) （202161038,202261063）
