渝黔铁路新白沙沱长江特大桥轨道结构选型

王明慧,李开兰

铁道工程学报 ›› 2014, Vol. 31 ›› Issue (11) : 35-37.

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铁道工程学报 ›› 2014, Vol. 31 ›› Issue (11) : 35-37.
线路与轨道

渝黔铁路新白沙沱长江特大桥轨道结构选型

  • 王明慧,李开兰
作者信息 +

Type Selection of Track Structure on New Baishatuo Yangtze River Bridge of Chongqing-Guiyang Railway

  • WANG Ming-hui, LI Kai-lan
Author information +
文章历史 +

摘要

研究目的:特大跨钢桥在荷载作用下有竖向位移大、自振频率较高的特点,轨道结构的选型直接影响到大桥自身的安全及列车的正常运营,本文通过对国内外钢桥轨道结构选型的介绍,结合渝黔铁路新白沙沱长江特大桥自身的特点,分析轨道结构与钢桥的适应性,确定该桥合理的轨道结构型式。研究结论:(1)有砟轨道结构通过道砟厚度的微调能较好的适应新白沙沱长江特大桥钢桁桥自身以及轨道二期恒载引起的变形大的特性;(2)有砟轨道的碎石道床与该桥车桥振动时的受力特性清晰,也能够更好的适应钢桁桥自振频率高的特性;(3)有砟轨道轨道成熟和稳定的技术更有利该桥钢桁桥的建造和维护;(4)本研究成果在大跨、重载铁路钢桁桥的轨道结构选型上具有一定的参考价值。

Abstract

Research purposes:Whether the reasonable track structure is adopted or not on large span steel bridge affects directly the normal running of train because a large vertical displacement and greater natural vibration frequency under loads. This paper introduced main track structure types at home and abroad, took new Baishatuo Yangtze River Bridge of Chongqing-Guiyang Railway for example, systematically analyzed the adaptability of track structure and steel bridge, determined reasonable track structure of the bridge.
Research conclusions:(1)The ballasted track structure can better adapt the deformation of steel bridge and deformation caused by the track dead load on New Baishatuo Yangtze River Bridge of Chongqing-Guiyang Railway.(2)The track ballast bed and the mechanical characteristics of the bridge axle vibration is clear, which can also better adapt the characteristics of high natural vibration frequency of the steel bridge.(3)Ease of construction and maintenance comes from the mature and stable technology of the ballasted track structure.(4)The results in this paper has a certain reference value on the selection of track structure on large span or heavy haul steel bridge.

关键词

渝黔铁路 / 长江大桥 / 轨道结构 / 选型

Key words

Chongqing-Guiyang Railway / Yangtze River Bridge / track structure / type selection

引用本文

导出引用
王明慧, 李开兰. 渝黔铁路新白沙沱长江特大桥轨道结构选型[J]. 铁道工程学报, 2014, 31(11): 35-37
WANG Ming-hui, LI Kai-lan. Type Selection of Track Structure on New Baishatuo Yangtze River Bridge of Chongqing-Guiyang Railway[J]. Journal of Railway Engineering Society, 2014, 31(11): 35-37
中图分类号: U213   

参考文献

[1] TB 10621—2009,高速铁路设计规范(试行) [S].
TB 10621—2009,Code for Design of High Speed Railway[S].
[2] 何华武. 无砟轨道技术[M]. 北京:中国铁道出版社,2005.
He Huangwu. Technology of Ballastless Track[M]. Beijing:China Railway Publishing House,2010.
[3] 中铁二院工程集团有限责任公司.改建铁路重庆至贵阳线扩能改造工程修改初步设计[R].成都: 中铁二院工程集团有限责任公司,2012.
China Railway Eryuan Engineering Group Co.Ltd. Revised Preliminary Design of Chongqing-Guiyang Railway[R].Chengdu:China Railway Eryuan Engineering Group Co.Ltd,2012.
[4] 卢茂胜. 哈齐客运专线轨道结构类型的选择分析[J]. 铁道工程学报,2009(8):57-59.
Lu Maosheng. Analysis of Choice of Track Structure of Harbin-Qiqihare Passenger Dedicated Line[J].Journal of Railway Engineering Society,2009(8):57-59.
[5] 朱高明.国内外无砟轨道的研究与应用综述[J].铁道工程学报,2008(7):28-30.
Zhu Gaoming.Overall Commentson Study and Application of Ballastless Trackat Home and Abroad[J].Journal of Railway Engineering Society,2008(7):28-30.

基金

新白沙沱长江大桥为中国铁路总公司科技研究开发计划项目(2011G026-B)

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