Wind Tunnel Test on Aerodynamic Characteristics of Large-span Bridge with Vehicles on π-Cross Section Under Cross Wind

被引：0
|
作者：
He X.-H. [1 ]
Xue F.-R. [1 ]
Zou Y.-F. [1 ]
Jiang S. [1 ]
Du B. [2 ]
Xu X.-D. [2 ]
Ma B.-H. [3 ]
机构：
[1] School of Civil Engineering, Central South University, Changsha, 410075, Hunan
[2] Guizhou Transportation Planning Survey & Design Academe Co., Ltd., Guiyang, 550081, Guizhou
[3] Yingyun Highway Administration Bureau of Guizhou Province, Guiyang, 550081, Guizhou
来源：
Zhongguo Gonglu Xuebao/China Journal of Highway and Transport | 2019年 / 32卷 / 10期
关键词：
Aerodynamic characteristic; Bridge engineering; Vehicle; Vehicle-bridge system; Wind tunnel test; π-cross section;
D O I：
10.19721/j.cnki.1001-7372.2019.10.016
中图分类号：
学科分类号：
摘要：
Accurately obtaining the aerodynamic force of a vehicle-bridge system is the basic premise for assessing the safety of vehicle operation on bridges under strong winds. Therefore, it is necessary to consider the significant aerodynamic interference between vehicles and bridges. In this study, a large-span bridge with π-cross section and a container truck were taken as research objects. The rigid pressure measuring models of both the bridge and vehicles with a scale ratio of 1:32 were designed and produced. Then, using the developed test device, the distribution of wind pressure on the surfaces of vehicles under typical vehicle-bridge combination conditions was tested for a uniform flow field in the high-speed test section of the wind cave laboratory of Central South University. This paper analyzes the influence of front and rear vehicle interference, vehicle transverse distance, and lane combination on the aerodynamic characteristics of vehicles. From the results of the wind pressure distribution on the surfaces of vehicles, the reasons for the change of the aerodynamic coefficients of vehicles were investigated. The results show that although vehicle interference and lateral distance have a great influence on the lateral force coefficient, drag coefficient, and lift coefficient of vehicles, they have a small effect on the torque coefficient of vehicles; the torque coefficient of vehicles has a certain dispersion. In different lane combination modes, changes in the test vehicle positions have more influence on vehicle aerodynamic characteristics than the change of position of interfering vehicles. Additionally, the change of vehicle combination mode has no influence on vehicle torque coefficient. The variation trend of the lateral force coefficient of the vehicle is different from that of Coleman's law affected by the π-cross section. © 2019, Editorial Department of China Journal of Highway and Transport. All right reserved.
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页码：169 / 177and199
相关论文
共 29 条
  • [1] Han W.-S., Zhao Y., Liu H.-J., Et al., Research and Development Trends of Wind-vehicle-bridge Coupling Vibration Systems, China Journal of Highway and Transport, 31, 7, pp. 1-23, (2018)
  • [2] Xie Q., Han W.-S., Liu X.-P., Et al., Development and Validation of Solid Vehicle-bridge Interaction Analysis System Based on Model Updating, China Journal of Highway and Transport, 31, 7, pp. 126-136, (2018)
  • [3] Han W.-S., Li Y.-W., Qiao L., Et al., Moving Load Identification Based on Vehicle-bridge Coupling Vibration Theory, China Journal of Highway and Transport, 26, 1, pp. 74-86, (2013)
  • [4] Ma L., Han W.-S., Ji B.-H., Et al., Study of Vehicle-bridge Coupling Vibration Under Actual Traffic Flow, China Journal of Highway and Transport, 25, 6, pp. 80-87, (2012)
  • [5] Liu H.-J., Han W.-S., Ding X.-T., Et al., A Nonlinear Analysis System for Wind-vehicle-bridge Under Skew Wind, China Journal of Highway and Transport, 31, 7, pp. 110-118, (2018)
  • [6] Li C.-G., Li K., Han Y., Et al., Wind-induced Stress Response Analysis of a Long-span Suspension Bridge Under Random Traffic Load Based on Influence Functions, China Journal of Highway and Transport, 31, 7, (2018)
  • [7] Li Y.-L., Xiang H.-Y., Qiang S.-Z., Review on Coupling Vibration of Wind-vehicle-bridge Systems, China Journal of Highway and Transport, 31, 7, pp. 24-37, (2018)
  • [8] Hu P., Lin W., Yang D.-G., Et al., Fluctuation Wind Speed Spectrum of a Moving Vehicle Under Crosswinds, China Journal of Highway and Transport, 31, 7, pp. 101-109, (2018)
  • [9] Humphreys N.D., Baker C.J., Forces on Vehicles in Cross Winds from Moving Model Tests, Journal of Wind Engineering and Industrial Aerodynamics, 44, 1-3, pp. 2673-2684, (1992)
  • [10] Baker C.J., Robinson C.G., The Assessment of Wind Tunnel Testing Techniques for Ground Vehicles in Cross Winds, Journal of Wind Engineering and Industrial Aerodynamic, 33, 1-2, pp. 429-438, (1990)
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