How Do Water Filled Traffic Barriers Shake a Suspension Bridge?  

作　　者：Guanni Qu Tianai Yue Xiaoyu Zhang Shibiao Wei 

机构地区：[1]The Shipley School,Bryn Mawr,USA [2]Tianjin Nankai High School,Tianjin,China [3]Xi’an Gaoxin No.1 High School,Xi’an,China

出　　处：《Fluid Dynamics & Materials Processing》2022年第3期591-608,共18页流体力学与材料加工（英文）

摘　　要：The present study stems from the realization that the general problem relating to the analysis of wind-induced vibrations in suspension bridges still requires significant attention.Sidewalk railings,overhaul tracks,and deflectors are known to largely affect such dynamics.Here,the influence of a row of water-filled traffic barriers on the response of a sample suspension bridge is investigated numerically.It is shown that the existence of water barriers causes flow separation and non-negligible vortices with respect to the condition with no water barriers.The vortex shedding frequency at the far end is around 41.30 Hz,relatively close to the real vibration frequency.It is also shown how different incoming angles of attack can change the flow field around the bridge cross-section and the vortex detachment frequency.

关 键 词：Suspension bridge water filled traffic barriers computational fluid dynamics vortex shedding frequency attack angle vibration 

分 类 号：O35[理学—流体力学]