川藏铁路廊道风特性及其对轨道交通的影响
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- 英文论文题名：The Characteristics of the Wind and its Effect on Sichuan-Tibet Railway
- 论文作者：李永乐 ; 张明金 ; 向活跃
- 英文论文作者：Li Yongle ; Zhang Mingjin ; Xiang Huoyue ; Department of Bridge Engineering ; Southwest Jiaotong University
- 年：2016
- 作者机构：西南交通大学桥梁工程系;
- 论文关键词：川藏山区 ; 川藏铁路 ; 深切峡谷 ; 大跨度桥梁 ; 风特性 ; 现场实测
- 英文论文关键词：Sichuan-Tibet mountain area ; Sichuan-Tibet railway ; deep gorge ; long-span bridges ; wind characteristics ; field measurement
- 会议召开时间：2016-10-14
- 会议录名称：“川藏铁路建设的挑战与对策”2016学术交流会论文集
- 语种：中文
- 分类号：U212.2
- 学会代码：ZGTD
- 会议名称：“川藏铁路建设的挑战与对策”2016学术交流会
- 会议地点：中国四川成都
- 主办单位：中国铁道学会、中国铁道学会工程分会、中国中铁股份有限公司、中铁二院工程集团有限责任公司
- 学会名称：中国铁道学会
- 页数：8
- 文件大小：944k
- 原文格式：O
- 会议级别：全国
摘要
川藏铁路穿越整个横断山脉地区,铁路沿线地形复杂多变,沟壑众多。山区地形的随机多变及不同地形特征间相互的气动干扰使复杂地形地貌桥址区风场变得异常复杂。本文讨论了川藏山区风特性及其对交通设施的影响,提出了川藏铁路所面临的抗风关键技术和挑战。川藏铁路的风场异常复杂,宜采用数值模拟、风洞试验和现场实测相结合的手段展开研究。铁路沿线缺少相关的风观测资料,而风荷载已成为某些峡谷桥梁的控制性因素,相关的风特性研究宜提前开展。
Sichuan-Tibet railway passes through the whole region of Hengduan Mountains.The terrain is complicated and changeable and there is lots of gully along the railway.The random and variability of mountainous area terrain as well as the mutual aerodynamic interference between different terrain features make the wind field in bridge site extremely complicated.This paper discusses the characteristics of the wind and its effect on traffic facilities in Sichuan-Tibet area,then it puts forward the key technologies and the challenges faced by Sichuan-Tibet railway in wind-resistant design.The wind field of Sichuan-Tibet railway is very complex,so the method of numerical simulation,wind tunnel experiments and field measurement should be combined in the research.The relevant data of wind observation is rare along the railway,but the wind load has become the decisive factors of some canyon bridges,so researches about the relevant wind characteristics should be carried out ahead of schedule.
Sichuan-Tibet railway passes through the whole region of Hengduan Mountains.The terrain is complicated and changeable and there is lots of gully along the railway.The random and variability of mountainous area terrain as well as the mutual aerodynamic interference between different terrain features make the wind field in bridge site extremely complicated.This paper discusses the characteristics of the wind and its effect on traffic facilities in Sichuan-Tibet area,then it puts forward the key technologies and the challenges faced by Sichuan-Tibet railway in wind-resistant design.The wind field of Sichuan-Tibet railway is very complex,so the method of numerical simulation,wind tunnel experiments and field measurement should be combined in the research.The relevant data of wind observation is rare along the railway,but the wind load has become the decisive factors of some canyon bridges,so researches about the relevant wind characteristics should be carried out ahead of schedule.
引文
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[12]张明金,李永乐,唐浩俊,等.高海拔高温差深切峡谷桥址区风特性现场实测[J].中国公路学报,2015,28(3):60-65.Zhang Mingjin,Li Yongle,Tang Haojun.Field measurement of wind characteristics a bridge site in deep gorge with high altitude and high temperature difference[J].China Journal of Highway and Transport,2015,28(3):60-65.
[13]张明金,李永乐,余显全,等.桥塔上风传感器安装位置对测量结果的影响[J].西南交通大学学报,2015,50(4):617-622.Zhang Mingjin,Li Yongle,Yu Xianquan.Installation position of wind sensor on the bridge tower in deep gorge site[J].Journal of Southwest Jiaotong University,2015,50(4):617-622.
[14]李永乐,张明金,徐昕宇,等.高海拔深切峡谷桥址区日常大风成因分析[J].西南交通大学学报,2014,49(6):60-65.Li Yongle,Zhang Mingjin,Xu Xinyu,et al.Cause analysis of daily strong wind on bridge site in deep gorge with high altitude and high temperature difference[J].Journal of Southwest Jiaotong University,2014,49(6):60-65.
[2]朱乐东,任鹏杰,陈伟,等.坝陵河大桥桥位深切峡谷风剖面实测研究[J].实验流体力学,2011,25(4):15-21.Zhu Ledong,Ren Pengjie,Chen Wei,et al.Investigation on wind profiles in the deep gorge at the balinghe bridge site via field measurement[J].Journal of Experiments in Fluid Mechanics,2011,25(4):15-21.
[3]庞加斌,宋锦忠,林志兴.四渡河峡谷大桥桥位风的湍流特性实测分析[J].中国公路学报,2010,23(3):42-47.Pang Jiabin,Song Jinzhong,Lin Zhixing.Field measurement analysis of wind turbulence characteristics of Sidu Rivir Valley Bridge Site[J].China Journal of Highway and Transport,2010,23(3):42-47.
[4]王厚雄,高注,王蜀东.挡风墙高度的研究[J].中国铁道科学,1990,11(I):14-23.Wang Houxiong,Gao Zhu,Wang Shudong.A study on the height of wind break wall[J].China Railway Science,1990,11(6):14-23.
[5]刘峰,许德德,陈正洪.北盘江大桥设计风速及脉动风频率的确定[J].中国港湾建设,2002,1:23-27.Liu Feng,Xu Dede,Chen Zhenghong.Calculation of designed wind velocity and wind pulsating frequency for the great bridge over the Beipan River[J].China Harbour Engineering,2002,1:23-27.
[6]李永乐,廖海黎,强士中.京沪高速铁路南京长江大桥桥址区风特性研究[J].桥梁建设,2002,114(4):5-7.Li Yongle,Liao Haili,Qiang Shizhong.Research on the wind characteristics of the site of Nanjing Changjiang River bridge on Beijing-Shanghai high-speed Railway[J].Bridge construction,2002,114(4):5-7.
[7]李永乐,唐康,蔡宪棠,等.深切峡谷区大跨度桥梁的复合风速标准[J].西南交通大学学报,2010,45(2):167-173.Li Yongle,Tang Kang,Cai Xiantang,et al.Integrated wind speed standard for long-span bridges over deep-cutting gorge[J].Journal of Southwest Jiao Tong University,2010,45(2):167-173.
[8]J.C.K.Cheung,M.Eaddy,W.H.Melbourne.Wind tunnel modeling of neutral boundary layer flow over mountains[C].The Eleventh International Conference on Wind Engineering.Lubbock,Texas,USA,2003.
[9]Atsushi Yamaguchi,Takeshi Ishihara,Yozo Fujino.Experimental study of the wind flow in a coastal region of Japan[J].Journal of Wind Engineering and Industrial Aerodynamics,2003,91:247-264.
[10]Hu P,Li Y L,Huang G Q,et al.The appropriate shape of the boundary transition section for a mountain-gorge terrain model in a wind tunnel test[J].Wind and Structures,2015,20(1):15-35.
[11]李永乐,蔡宪棠,唐康,等.深切峡谷桥址区风场特性数值模拟研究[J].土木工程学报,2011,44(2):116-122.Li Yongle,Cai Xiantang,Tang Kang,et al.Study of spatial distribution feature of wind fields over bridge site with a deepcutting gorge using numerical simulation[J].China Civil Engineer Journal,2011,44(2):116-121.
[12]张明金,李永乐,唐浩俊,等.高海拔高温差深切峡谷桥址区风特性现场实测[J].中国公路学报,2015,28(3):60-65.Zhang Mingjin,Li Yongle,Tang Haojun.Field measurement of wind characteristics a bridge site in deep gorge with high altitude and high temperature difference[J].China Journal of Highway and Transport,2015,28(3):60-65.
[13]张明金,李永乐,余显全,等.桥塔上风传感器安装位置对测量结果的影响[J].西南交通大学学报,2015,50(4):617-622.Zhang Mingjin,Li Yongle,Yu Xianquan.Installation position of wind sensor on the bridge tower in deep gorge site[J].Journal of Southwest Jiaotong University,2015,50(4):617-622.
[14]李永乐,张明金,徐昕宇,等.高海拔深切峡谷桥址区日常大风成因分析[J].西南交通大学学报,2014,49(6):60-65.Li Yongle,Zhang Mingjin,Xu Xinyu,et al.Cause analysis of daily strong wind on bridge site in deep gorge with high altitude and high temperature difference[J].Journal of Southwest Jiaotong University,2014,49(6):60-65.