摘要
文中主要研究了扁平箱梁气动力的展向相关特性,主要手段采用风洞节段模型测压试验。首先通过CFD数值模拟进行了主梁的气动力特性及外部绕流特性分析,明确了试验布点方案,最后进行了风洞节段模型试验,分析了改变风攻角和展向间距时,气动力、测点压力的展向相关性。结果表明扁平箱梁的气动力展向相关性在展向间距增大时减小;正攻角时,风攻角越大,上表面测点压力的展向相关性越强,而负攻角时变化不敏感。
The correlation of spanwise of flat box girder aerodynamic forces are studied.The aerodynamic characteristics and external flow characteristics of the main beam are analyzed by CFD numerical simulation,in which the test layout plan is clarified and the spanwise correlation of the pressure at the measuring point.The results show that the spanwise correlation of the aerodynamic force of the flat box girder decreases as the spanwise spacing increases.When the angle of attack is positive,the greater the angle of attack,the stronger the spanwise correlation of the pressure at the upper surface measuring point;when the attack angle is negative,insensitive to changes in angle.
作者
崔彦
郭影
周军伟
CUI Yan;GUO Ying;ZHOU Junwei(School of Civil Engineering,Hebei College of Engineering and Technology,Shijiazhuang 050091,China;Jinan Technical College Rail Transit College,Jinan 250023,China;Tianjin Rolling Stock Depot of China Railway Beijing Bureau Group Co.,Ltd.,Tianjin 300012,China)
出处
《低温建筑技术》
2023年第1期62-67,共6页
Low Temperature Architecture Technology
基金
河北省自然科学基金(E2013210103)。
