[1]吕 娜,张英虹,谢海清,等.基于风-车-桥耦合振动的导风屏障防风效果研究[J].高速铁路技术,2023,14(03):32-36.[doi:10.12098/j.issn.1674-8247.2023.03.007]
　LV Na,ZHANG Yinghong,XIE Haiqing,et al.A Study on the Windproof Effect of Wind Deflector Based on Wind-vehicle-bridge Coupled Vibration[J].HIGH SPEED RAILWAY TECHNOLOGY,2023,14(03):32-36.[doi:10.12098/j.issn.1674-8247.2023.03.007]
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基于风-车-桥耦合振动的导风屏障防风效果研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
14卷
期数:
2023年03期
页码:
32-36
栏目:
理论探索
出版日期:
2023-06-01

文章信息/Info

Title:
A Study on the Windproof Effect of Wind Deflector Based on Wind-vehicle-bridge Coupled Vibration
文章编号:
1674-8247（2023）03-0032-05
作者:
吕 娜1; 张英虹1; 谢海清2; 张鹤1; 金怡新1
1.成都亚佳工程新技术开发有限公司，成都610083;2.中铁二院工程集团有限责任公司，成都610031
Author(s):
LV Na1; ZHANG Yinghong1; XIE Haiqing2; ZHANG He1; JIN Yixin1
1.Chengdu Alga Engineering New Technology Development Co. ，Ltd. ，Chengdu 610083 ，China;2.China Railway Eryuan Engineering Group Co. ，Ltd. ，Chengdu 610031 ，China
关键词:
高速铁路 ; 导风屏障; 风屏障; 导风; 风-车-桥耦合; 气动效应; 安全阈值
Keywords:
high-speed railway; wind deflector; wind barrier; wind guidance; wind-vehicle-bridge coupling; aerodynamic effect; safety threshold
分类号:
TU352.2；U448.13
DOI:
10.12098/j.issn.1674-8247.2023.03.007
文献标志码:
A
摘要:
本文以大宁河特大桥为工程背景，通过风洞试验和风-车-桥耦合分析，对比了未设置导风屏障、设置2.5m、3m高导风屏障3种工况下的列车三分力系数、风速折减系数，研究了横风对350km／h速度列车、桥梁的动力响应的影响，结果表明：（1）桥面设置导风屏障后，列车的侧力系数和倾覆力矩系数大幅衰减，桥梁的侧力系数明显增大；（2）该桥不设置防风措施，风速达到15m／s时，列车就须限速通行；设置高度3m的导风屏障后，风速达到30m／s，列车仍可按设计350km／h速度安全通过；（3）导风屏障的设置并未增加桥梁的动力响应，反而因其合理的挡、导风结构减小了大风对桥梁的影响。
Abstract:
Taking Daning River Super Major Bridge as the engineering background，through wind tunnel test and wind-vehicle-bridge coupling analysis，this paper compares the three-component force coefficient and wind speed reduction coefficient of trains under three working conditions of no wind deflector and 2. 5 m and 3 m high wind deflectors，and analyzes the influence of crosswind on the dynamic response of trains and bridges at 350 km／h speed. The results show that：（1）After the bridge deck is provided with a wind deflector，the lateral force coefficient and overturning moment coefficient of the train are greatly attenuated，and the lateral force coefficient of the bridge is obviously increased. （2） Without wind protection measures provided on the bridge，when the wind speed reaches 15 m／s，the train must pass at a limited speed；After installing a 3 m high wind deflector，the train can still safely pass at the designed speed of 350 km／h even when the wind speed reaches 30 m／s. （3）The installation of wind deflectors did not increase the dynamic response of the bridge，but rather reduced the impact of strong winds on the bridge due to its reasonable wind shielding and guiding structure.

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备注/Memo

备注/Memo:
收稿日期：2022-05-18
作者简介：吕娜（1982-），女，工程师。
更新日期/Last Update: 2023-06-01