Aerodynamic parameters selection and windbreak mechanism of
wind barrier for high-speed railway bridge
Yujing Wang,Weiwei Guo,He Xia,Qinghai Guan,Shaoqin Wang
Abstract
To investigate the optimal aerodynamic parameters of wind barriers for the T-beam of high-speed railway (HSR)
bridge and the wind field of the wind barrier-train-bridge system, the three-component forces of the system and the wind
pressure on the vehicle surface were tested and analyzed through the sectional model wind test. The effects of wind velocity,
with/without wind barrier, the height of wind barrier, and the air permeability of the wind barrier on the aerodynamic
characteristics of the train-bridge system are discussed. Additionally, a CFD numerical model is constructed to evaluate the wind
environment of the bridge surface with/without the wind barrier, and the impact of wind barrier on the running safety of vehicles
are analyzed. Comprehensively considering the running safety of the train and the wind-resistant stability of the bridge, it is
more appropriate to set the wind barrier height H as 3.5 m and the porosity β as 30% respectively.
Yujing Wang:1)School of traffic engineering, Shandong Jianzhu University, JiNan, 250101, China
2)School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
Weiwei Guo:School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
He Xia:School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
Qinghai Guan:School of traffic engineering, Shandong Jianzhu University, JiNan, 250101, China
Shaoqin Wang:School of Science, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
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