长江科学院院报2018，Vol.35Issue(1)：11-15,5.DOI:10.11988/ckyyb.20160919
斜交塔基局部冲刷规律研究
Rules of Local Scour of Skewed Tower Footing
摘要
Abstract
The local scour of tower footing (pier) is a critical subject in planning and designing river-crossing project.Skewed tower footing has being gradually used in river-crossing engineering due to special geography,geology and economic conditions.But researchers paid more attention to the local scour of orthogonal tower footing (pier) rather than that of skewed tower footing.In this article,the rules of local scour of a skewed tower footing are researched through generalized model test.Results reveal that the increment of flow velocity on deviational side of skewed tower footing is bigger than that on dorsal side;the maximum scour depth is large,and the position is on deviational side;the scour pit displays an asymmetrical horseshoe shape,and the scour range on deviational side is larger than that on dorsal side.When bed surface around the tower footing is protected,this trend becomes weak.The results offer reference for researches on the local scour of skewed tower footing of river-crossing bridge or cable gallery construction.关键词
斜交塔基/桩群/冲刷坑/冲刷深度/流速Key words
skewed tower footing/pile group/scour pit/scour depth/flow velocity分类
建筑与水利引用本文复制引用
李舜,柴朝晖,刘同宦,冯源..斜交塔基局部冲刷规律研究[J].长江科学院院报,2018,35(1):11-15,5.基金项目
国家重点研发计划项目(2016YFC0402307) （2016YFC0402307）
国家自然科学基金项目(51609012,51409019,51339001) （51609012,51409019,51339001）
长江科学院中央级公益性科研院所基本科研业务费项目(CKSF2016010/HL) （CKSF2016010/HL）
