[1]何宝华.风屏障透风率对侧风下货运专线简支箱梁桥车桥耦合振动影响研究[J].高速铁路技术,2023,14(04):56-62.[doi:10.12098/j.issn.1674-8247.2023.04.011]
 HE Baohua.A Study on Effect of Ventilation Rate of Wind Barrier on Vehicle-bridge Coupling Vibration of Simply Supported Box Girder Bridge of Freight Dedicated Line under Crosswind[J].HIGH SPEED RAILWAY TECHNOLOGY,2023,14(04):56-62.[doi:10.12098/j.issn.1674-8247.2023.04.011]
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风屏障透风率对侧风下货运专线简支箱梁桥车桥耦合振动影响研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
14卷
期数:
2023年04期
页码:
56-62
栏目:
出版日期:
2023-08-30

文章信息/Info

Title:
A Study on Effect of Ventilation Rate of Wind Barrier on Vehicle-bridge Coupling Vibration of Simply Supported Box Girder Bridge of Freight Dedicated Line under Crosswind
文章编号:
1674-8247(2023)04-0056-07
作者:
何宝华
国能新朔准池铁路(山西)有限责任公司,山西?朔州 036002
Author(s):
HE Baohua
CHN Energy Xinshuo Zhunchi Railway(Shanxi)Co. ,Ltd. ,Shuozhou? 036002 ,China
关键词:
风屏障风-车-桥耦合动力响应货运列车简支箱梁
Keywords:
wind barrierwind-vehicle-bridge couplingdynamic responsefreight trainsimply supported box girder
分类号:
U441
DOI:
10.12098/j.issn.1674-8247.2023.04.011
文献标志码:
A
摘要:
为探究强风作用下风屏障透风率对货运专线铁路车桥耦合振动的影响,通过数值模拟计算不同透风率风屏障桥梁在不同位置行车时的车桥系统三分力系数,根据弹性系统动力学总势能不变值原理建立考虑风荷载的车桥系统耦合振动方程,对横风作用下货运列车通过设置不同透风率风屏障的简支箱梁桥时的车桥动力响应进行计算。结果表明:(1)桥梁横向位移受到风屏障透风率和列车行驶位置的影响,存在某一个透风率使得桥梁横向位移最小;(2)风屏障透风率从20%增加到60%,列车的脱轨系数和轮重减载率呈增大趋势,迎风车的两项参数均大于背风车;(3)重车的横向摇摆力大于空车,横向摇摆力随风屏障透风率增大的幅度受列车重量影响较小。
Abstract:
In order to explore the effect of the ventilation rate of wind barrier on vehicle-bridge coupling vibration of freight dedicated railway under strong wind,this paper calculated the three-component coefficient of vehicle-bridge system of bridges with wind barriers with different ventilation rates during train operation at different positions by numerical simulation,established the vehicle-bridge coupling vibration equation considering wind load according to the principle of the constant total potential energy of elastic system dynamics,and calculated the vehicle-bridge dynamic response of freight trains passing through simply supported box girder bridges with different ventilation rates under crosswind. The results show that:(1)The lateral displacement of the bridge is affected by the ventilation rate of the wind barrier and the position of the running train,and there is a certain ventilation rate that minimizes the lateral displacement of the bridge.(2)When the ventilation rate of wind barrier increases from 20% to 60%,the derailment coefficient and wheel unloading coefficient of the train show an increasing trend,and both parameters of windward vehicle are greater than those of leeward vehicle. (3) The lateral swaying force of the loaded vehicle is greater than that of an empty vehicle,and the increased range of lateral swaying force with wind barrier’s ventilation rate is less affected by train weight.

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备注/Memo

备注/Memo:
收稿日期:2022-06-14
作者简介:何宝华(1976-),男,教授级高级工程师。
更新日期/Last Update: 2023-08-30