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铁路斜拉桥上无缝线路纵向力规律分析

王平 刘浩 魏贤奎 肖杰灵

王平, 刘浩, 魏贤奎, 肖杰灵. 铁路斜拉桥上无缝线路纵向力规律分析[J]. 交通运输工程学报, 2013, 13(5): 27-32.
引用本文: 王平, 刘浩, 魏贤奎, 肖杰灵. 铁路斜拉桥上无缝线路纵向力规律分析[J]. 交通运输工程学报, 2013, 13(5): 27-32.
WANG Ping, LIU Hao, WEI Xian-kui, XIAO Jie-ling. Analysis of longitudinal force regulation for CWR on railway cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2013, 13(5): 27-32.
Citation: WANG Ping, LIU Hao, WEI Xian-kui, XIAO Jie-ling. Analysis of longitudinal force regulation for CWR on railway cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2013, 13(5): 27-32.

铁路斜拉桥上无缝线路纵向力规律分析

基金项目: 

国家自然科学基金项目 51078320

详细信息
    作者简介:

    王平(1969-), 男, 湖北宜昌人, 西南交通大学教授, 从事高速、重载轨道结构及动力学研究

  • 中图分类号: U213.9

Analysis of longitudinal force regulation for CWR on railway cable-stayed bridge

More Information
  • 摘要: 运用梁轨相互作用原理, 建立了斜拉桥上无缝线路纵向力计算模型, 编制了计算软件, 以一座铁路常用双塔钢桁斜拉桥为例, 研究了斜拉桥上无缝线路纵向力规律。分析结果表明: 可将斜拉桥简化为跨中设置固定支座的连续梁进行钢轨伸缩力计算; 计算钢轨挠曲力时, 可在斜拉桥主跨及其邻跨上布置荷载, 或仅在斜拉桥主跨上布置荷载, 而且不必考虑列车入桥方向的变化; 铁路斜拉桥需设置速度锁定器以有效限制列车制动作用下的主梁纵向位移, 减小线路受力变形; 斜拉桥上铺设无缝线路应采用梁轨相互作用法以精确计算钢轨断缝值。

     

  • 图  1  斜拉桥梁轨相互作用计算模型

    Figure  1.  Calculation model of track-bridge interaction for cable-stayed bridge

    图  2  桥梁布置

    Figure  2.  Bridge arrangement

    图  3  钢轨伸缩力

    Figure  3.  Rail expansion forces

    图  4  桥面纵向位移

    Figure  4.  Bridge longitudinal displacements

    图  5  主桥简化

    Figure  5.  Main bridge simplification

    图  6  主桥简化钢轨伸缩力

    Figure  6.  Rail expansion forces of main bridge simplification

    图  7  荷载工况

    Figure  7.  Loading conditions

    图  8  钢轨挠曲力

    Figure  8.  Rail bending forces

    图  9  制动工况计算结果

    Figure  9.  Calculation results of brake conditions

    图  10  钢轨纵向位移

    Figure  10.  Rail longitudinal displacements

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    LI Zhi-hui. The optimization of pier longitudinal linear stiffness of CWR on railway simply supported bridges with highpier, long span and large-length[D]. Changsha: Central South University, 2011. (in Chinese).
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    ZHU Bin. Design of continuous welded rail upon long span cablestayed bridge with steel-concrete composite box beam[J]. Railway Standard Design, 2012 (2): 4-6, 15. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TDBS201202004.htm
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    YAN Bin, DAI Gong-lian. CWR longitudinal force of cablestayed bridge of high-speed railway[J]. Journal of the China Railway Society, 2012, 34 (3): 83-87. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB201203019.htm
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    YAN Bin, DAI Gong-lian, DONG Lin-yu. Design parameters of track-bridge interaction on passenger dedicated line cablestayed bridge[J]. Journal of Traffic and Transportation Engineering, 2012, 12 (1): 31-37. (in Chinese). http://transport.chd.edu.cn/article/id/201201006
    [13] 赵卫华. 斜拉桥上无缝线路设计计算方法研究[D]. 成都: 西南交通大学, 2010.

    ZHAO Wei-hua. A study of calculation method of CWR on cable-stayed bridge[D]. Chengdu: Southwest Jiaotong University, 2010. (in Chinese).
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出版历程
  • 收稿日期:  2013-03-18
  • 刊出日期:  2013-10-25

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