| Mechanics model of additional longitudinal force transmission between bridges and continuously welded rails with small resistance fasteners |
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| 引用本文： | 徐庆元,周小林,曾志平,杨小礼. Mechanics model of additional longitudinal force transmission between bridges and continuously welded rails with small resistance fasteners[J]. 中南工业大学学报(英文版), 2004, 11(3): 336-339. DOI: 10.1007/s11771-004-0069-3 |
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| 作者姓名： | 徐庆元 周小林 曾志平 杨小礼 |
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| 作者单位： | SchoolofCivilEngineeringandArchitecture,CentralSouthUniversity,Changsha410075,China |
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| 基金项目： | Project( 2 0 0 1G0 49)supportedbytheFoundationoftheScienceandTechnologySectionofMinistryofRailwayofChina |
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| 摘 要： | A new mechanics model, which reveals additional longitudinal force transmission between the continuously welded rails and the bridges, is established on the fact that the influence of the mutual relative displacement among the rail, the sleeper and the beam is taken into account. An example is presented and numerical results are compared. The results show that the additional longitudinal forces calculated with the new model are less than those of the previous, especially in the case of the flexible pier bridges. The new model is also suitable for the analysis of the additional longitudinal force transmission between rails and bridges of ballastless track with small resistance fasteners without taking the sleeper displacement into account, and compared with the ballast bridges, the ballastless bridges have a much stronger additional longitudinal force transmission between the continuously welded rails and the bridges.
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| 关 键 词： | 线路工程 结构模型 枕木 线路振动 |
| 收稿时间： | 2003-09-29 |
| 修稿时间： | 2004-01-11 |
Mechanics model of additional longitudinal force transmission between bridges and continuously welded rails with small resistance fasteners |
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| Xu Qing-yuan , Zhou Xiao-lin , Zeng Zhi-ping and Yang Xiao-li. Mechanics model of additional longitudinal force transmission between bridges and continuously welded rails with small resistance fasteners[J]. Journal of Central South University of Technology, 2004, 11(3): 336-339. DOI: 10.1007/s11771-004-0069-3 |
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| Authors: | Xu Qing-yuan Zhou Xiao-lin Zeng Zhi-ping Yang Xiao-li |
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| Affiliation: | (1) School of Civil Engineering and Architecture, Central South University, 410075 Changsha, China |
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| Abstract: | A new mechanics model, which reveals additional longitudinal force transmission between the continuously welded rails and the bridges, is established on the fact that the influence of the mutual relative displacement among the rail, the sleeper and the beam is taken into account. An example is presented and numerical results are compared. The results show that the additional longitudinal forces calculated with the new model are less than those of the previous, especially in the case of the flexible pier bridges. The new model is also suitable for the analysis of the additional longitudinal force transmission between rails and bridges of ballastless track with small resistance fasteners without taking the sleeper displacement into account, and compared with the ballast bridges, the ballastless bridges have a much stronger additional longitudinal force transmission between the continuously welded rails and the bridges. |
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| Keywords: | railway engineering continuously welded rails on bridge additional longitudinal force mechanics model |
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