基于CFD的双边钝体箱梁涡振性能及抑振措施研究  

Study of the Vortex-Induced Vibration Performance of Double Bluff Body Box Girder and the Vibration Suppression Measures Based on CFD

作　　者：于海洋 张卫强 YU Haiyang;ZHANG Weiqiang(Highway Research Institute of the Ministry of Transport,Beijing 100088,China;CCCC WorldCom(Chongqing)Heavy Industry Co.,Ltd.,Chongqing 402160,China)

机构地区：[1]交通运输部公路科学研究院,北京100088 [2]中交世通(重庆)重工有限公司,重庆402160

出　　处：《河南科技》2024年第20期55-60,共6页Henan Science and Technology

基　　金：国家重点研发计划项目(2022YFC3005300)。

摘　　要：【目的】为了掌握双边钝体箱梁在低风速下的风致振动情况,有必要对其涡振性能以及抑振措施进行研究。【方法】基于雷诺平均方法(RANS)和SST k-ω模型,采用CFD(Computational Fluid Dynamics)方法,对双边钝体箱形断面进行数值模拟,研究其在低风速下的风场信息和产生涡激共振的情况。【结果】得到原截面与各增设内挑式水平隔流板的工况下的压力、流场详情及振动情况。【结论】内挑式水平隔流板可有效抑制桥梁的涡激共振,且在各工况中增设1.5 m内挑式水平隔流板抑振效果最佳。[Purposes]In order to study the wind-induced vibration of double bluff body box girder under low wind speed,it is necessary to study its vortex-induced vibration and vibration suppression measures.[Methods]Based on the Reynolds average method(RANS)and the SST k-ωmodel,a numerical simu-lation of the double bluff body box section was carried out by means of Computational Fluid Dynamics(CFD)to study the wind field information and vortex-induced vibration at low wind speed.[Findings]The pressure,flow field details and vibration conditions of the original section and each additional inter-nal lift horizontal baffle are obtained.[Conclusions]The vortex-induced vibration of the bridge can be effectively reduced by the internal lift horizontal baffle,and the vibration suppression effect of adding 1.5 m internal lift horizontal baffle in each working condition is the best.

关 键 词：桥梁工程 涡激共振 CFD 双边钝体箱梁 内挑式水平隔流板 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]