路堤-桥梁过渡段车辆气动力风洞试验研究
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作者单位:

北京交通大学 土木建筑学院,北京 100044

作者简介:

韩冰(1973- ),男,教授,博士生导师,主要从事钢-混凝土组合结构长期性能和桥梁结构理论研究,E-mail:bhan@bjtu.edu.cn。
HAN Bing (1973- ), professor, doctorial supervisor, main research interest: long-term performance of steel-concrete composite structure and bridge structure theory, E-mail: bhan@bjtu.edu.cn.

通讯作者:

中图分类号:

U417.9

基金项目:

山东省交通运输科技项目(C17L00380);国家自然科学基金(51778051)


Experimental analysis of vehicle aerodynamic force in embankment-bridge transition section
Author:
Affiliation:

School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, P. R. China

Fund Project:

Shandong Transportation Science and Technology Project (No. C17L00380); National Natural Science Foundation of China (No. 51778051)

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    摘要:

    为了探究路堤-桥梁过渡段处车辆的气动力,建立1:50的大比例尺路堤-桥梁过渡段和车辆试验模型,在桥梁和路堤段分别布置两种风屏障,并在车辆模型表面布置多个测压点,以研究不同防风措施下处于不同风向角的路桥过渡段车辆气动力。试验结果表明:与无防风措施相比,布置桥梁风屏障后最不利风向角会从-15°变为0°,此风向下过渡段处车辆的三分力最大;再进一步布置路堤风屏障后最不利风向角不变,但大幅度减小了0°风向角下车辆的侧力系数和力矩系数;布置路堤风屏障能有效减小车辆所受三分力;不同风向角下改变陆地风屏障参数产生的影响不同,针对路堤-桥梁过渡段布置防风措施时,应充分考虑其来流方向,以达到最优效果。

    Abstract:

    In order to explore the aerodynamic force of vehicles at the transition section of embankment and bridge, a 1:50 large-scale embankment-bridge transition section and vehicle experimental model are established in this paper. Two kinds of wind barriers are arranged in the bridge and embankment sections, and multiple pressure measuring points are arranged on the surface of the vehicle model to study the aerodynamic force of vehicles at the embankment-bridge transition section at different wind directions under different windproof measures. The experiment results show that compared with no wind-proof measures, the most unfavorable wind direction angle will change from -15° to 0° after the arrangement of the bridge wind barrier, and the three-component force of the vehicle at the transition section under this wind direction is the largest. After further arrangement of embankment wind barrier, the most unfavorable wind direction angle remains unchanged, but the lateral coefficient and torque coefficient of the vehicle at 0° wind direction angle are greatly reduced. The arrangement of embankment wind barrier can effectively reduce the three-component force of vehicles. The influence of changing the parameters of land wind barrier is not the same in different wind directions. The direction of the incoming flow should be fully considered in the arrangement of windbreak measures for the embankment-bridge transition section to achieve the optimal effect.

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韩冰,李昊轩,何一宽,解会兵,贾影.路堤-桥梁过渡段车辆气动力风洞试验研究[J].土木与环境工程学报(中英文),2024,46(4):136-142. HAN Bing, LI Haoxuan, HE Yikuan, XIE Huibing, JIA Ying. Experimental analysis of vehicle aerodynamic force in embankment-bridge transition section[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2024,46(4):136-142.10.11835/j. issn.2096-6717.2022.013

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  • 收稿日期:2020-10-22
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  • 在线发布日期: 2024-07-07
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