东南大学学报（英文版）2025，Vol.41Issue(3)：261-269,9.DOI:10.3969/j.issn.1003-7985.2025.03.001
溃坝水流作用下结构柔性及截面形状对桩柱水流力的影响
Effect of structural flexibility and geometry on the hydrodynamic force of vertical columns under dam-break flow
摘要
Abstract
Past investigations of the hydrodynamic forces on vertical columns have generally been based on rigid struc-ture assumptions.The effects of structural flexibility and ge-ometry characteristics on the hydrodynamic force distribu-tion are not well understood.In this study,fluid-structure interaction models are developed for numerical analyses.This modeling technique is verified with an experimental test in the literature using both circular and rectangular cross-sections.A series of material elasticities that present structural properties ranging from rigid to flexible is then used to conduct analyses.This finding indicates that an in-crease in structural flexibility can decrease the impact force to some extent,but this effect is limited.A concrete bridge pier with fluid flow impact can be considered rigid when it is fixed at the bottom.After that,the effects of the initial downstream water height and the width of water tank on the hydrodynamic force are thoroughly investigated.The re-sults demonstrate that the increase in the downstream water height with a constant upstream water height corresponds to a decreased force.Moreover,the vertical column results in a blockage effect on the fluid flow.The greater the block-age effect,the higher the hydrodynamic force.The block-age effect from the vertical column can be neglected when the tank width is greater than eight times the structural cross-section diameter.关键词
水流力/结构柔性/材料弹性/初始下游水深/阻塞效应/溃坝水流Key words
hydrodynamic force/structural flexibility/ma-terial elasticity/initial downstream water height/blockage effect/dam-break flow分类
交通工程引用本文复制引用
王建国,黎雄凯,秦顺全,李永乐,魏凯..溃坝水流作用下结构柔性及截面形状对桩柱水流力的影响[J].东南大学学报（英文版）,2025,41(3):261-269,9.基金项目
The National Natural Science Foundation of China(No.52222804,U21A20154). （No.52222804,U21A20154）
