桥墩组与水流方向夹角较大对河道水流影响的数值模拟研究  

Numerical Simulation Research on the Affection By the Bigger Angle Between the Middle-line of the Piers Group and the River Flow

作　　者：刘智光[1] 吴飞[2] 

机构地区：[1]武汉大学,湖北武汉430072 [2]广东省水利电力勘测设计研究院,广东广州510635

出　　处：《吉林水利》2009年第12期21-24,共4页Jilin Water Resources

摘　　要：为研究桥墩组中轴线与水流方向夹角较大对河道流场的影响,建立了平面二维数学模型,先在理想矩形水槽对不同夹角下桥墩组对流场的影响及桥墩优化布置进行了研究,并通过工程实例计算进行了进一步印证,结果表明:在夹角角度不变的情况下,将桥墩错开布置可较好的减少因桥墩组中轴线与水流方向夹角较大而带来的不利影响。To study the the affection by the bigger angle between the middle--line of the piers group and the river flow, build up the plane 2--D mathematical model. First, study the affections by the piers group with the different angles between the flow direction and the middle--line of the piers group in the ideal rectangular flume and the improved placement of the piers. Then verifies the results of the study by the practical project. The results make cheat that the left pier and the righ pier is stagger to be built to reduce the disadvantageous affections in the same angle.

关 键 词：桥梁 数学模型 流向 错开布置 

分 类 号：TV143[水利工程—水力学及河流动力学]