摘要
某悬索桥位于平原地区,为了提高其运营管理效率并且保障行车安全,对桥面行车风环境进行研究。采用数值风洞的方法,对主桥、引桥跨中截面二维流场以及桥塔区的三维流场进行了研究,并且提出了两种风障设计方案。通过对等效桥面风速计影响系数的对比研究,确定了风障方案的挡风效果,为大桥的行车安全提供保障。
There is a suspension bridge located in a plain area. In order to improve the operational management efficiency and to guarantee the driving safety of this bridge, the article studies the driving wind environment of the bridge deck. The method of numerical wind tunnel is used to analyze the 2D flow field of the mid-span sections of the main bridge and the approach bridge, and the 3D flow field of the bridge pylon zone. Two kinds of wind barrier schemes are proposed. The windproof effect of wind barrier scheme is determined by the comparison and study of equivalent deck wind speed influence coefficients in order to guarantee the driving safety of the bridge.
出处
《城市道桥与防洪》
2017年第11期193-196,共4页
Urban Roads Bridges & Flood Control
关键词
悬索桥
行车风环境
风障
数值风洞
suspension bridge
driving wind environment
wind barrier
numerical wind tunnel
