摘要
研究桥墩群周围流场有利于优化桥墩设计,对河道防洪安全、稳定河势有着重要的意义。建立了相同压缩比情况下单排和双排桥墩模型,对比分析了桥墩群对水流结构的影响,指出:相同压缩比条件下,最大流速出现在前排各桥墩两侧,与水流方向夹角在70°～90°范围内,且桥墩群周围最大流速的大小与桥墩的布置间距有关。
Studying on the flow field structure is significance to optimizing the pier design,controlling the flood and stabilizing the river regime.Establishing of the single-row and double-row of bridge piers model with the same compression ratio,this paper comparatively analyzed the influence on the flow structure.It shows that with the same compression ratio,the maximum velocity appears in 70 to 90 degree areas of both sides of the front-row piers.The results also show that the area of maximum velocity is related to the arrangement and the spacing of the piers.
出处
《人民黄河》
CAS
北大核心
2013年第1期115-116,119,共3页
Yellow River
基金
中国水利水电科学研究院科研专项
"十二五"国家科技支撑计划项目(2012BAB04B01)
关键词
压缩比
桥墩群
绕流
流速
compression ratio
bridge piers
flow around
flow velocity
作者简介
鲁婧（1984-），女，山西l临汾人，工程师，硕士，研究方向为水土保持、水力学及河流动力学。E-mail：Ⅻing_lf@163．com
