| 桥上无缝线路伸缩附加力计算的新方法 |
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| 引用本文： | 朱文珍,陈秀方,刘新建.桥上无缝线路伸缩附加力计算的新方法[J].石家庄铁道学院学报,2005,18(4):26-29,34. |
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| 作者姓名： | 朱文珍 陈秀方 刘新建 |
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| 作者单位： | [1]中南大学土木建筑学院,湖南长沙410075 [2]中铁隧道集团二处有限公司,北京101601 |
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| 基金项目： | 铁道部科技发展计划项目（2000G49-C1） |
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| 摘 要： | 用广义变分法来计算桥上无缝线路附加力，提出了研究桥上无缝线路附加力计算的新方法。基于已有的试验及计算结果，先假设钢轨伸缩附加力函数，由此得到钢轨位移及梁轨相对位移函数，再通过对梁轨体系总能量进行广义变分计算，建立起结构体系的平衡方程，最后编制相应的计算程序，得到了符合工程实际的计算结果。
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| 关 键 词： | 广义变分法 桥上无缝线路 高速铁路 |
| 文章编号： | 1006-3226（2005）04-0026-05 |
| 收稿时间： | 2004-12-19 |
| 修稿时间： | 2004-12-19 |
A New Method for Calculating Additional Expansion and Contraction Forces of CWR on Bridge |
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| Zhu Wenzhen, Chen Xiufang, Liu Xinjian.A New Method for Calculating Additional Expansion and Contraction Forces of CWR on Bridge[J].Journal of Shijiazhuang Railway Institute,2005,18(4):26-29,34. |
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| Authors: | Zhu Wenzhen Chen Xiufang Liu Xinjian |
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| Institution: | 1. School of Civil Architecture of Zhongnan University, Changsha 410075, China; 2. The 2nd Company of China Railway Tunnel Group, Beijing 101601, China |
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| Abstract: | The author applies generalized variational methods to calculate the additional expansion and contraction forces of CWR on bridge. A new method of studying on additional forces of CWR on bridge is presented. Based on former experiments and calculating results, the functions of the additional expansion and contraction forces on rails are assumed at first, from which the functions of the rail displacement and the relative displacement between beams and rails are acquired. On the basis of the variational calculation of the total energy of beams and rails structure, the equilibrium equations are derived. At last, a relevant calculation program is worked out. The results conform to the practical engineering conditions. |
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| Keywords: | generalized variational method CWR on bridge high- speed railway |
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