| 桥上无碴轨道无缝道岔力学特性分析 |
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| 引用本文： | 孙大新,高亮,刘衍峰.桥上无碴轨道无缝道岔力学特性分析[J].北京交通大学学报(自然科学版),2007,31(1):89-92. |
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| 作者姓名： | 孙大新 高亮 刘衍峰 |
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| 作者单位： | [1]北京交通大学土木建筑工程学院,北京100044 [2]北京市市政工程设计研究总院,北京100045 |
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| 基金项目： | 北京交通大学重点科技基金 |
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| 摘 要： | 采用有限单元方法，建立了桥上无碴轨道、无缝道岔伸缩力的计算模型，分析了轨温变化幅度、扣件阻力、限位值、间隔铁数量等轨道结构参数对无缝道岔受力及变形的影响．研究表明，桥上无碴轨道无缝道岔的温度力和位移受轨温变化幅度的影响很大，扣件阻力对结构受力也有很大的影响，而限位器、间隔铁阻力参数变化对结构的影响要居次要地位．
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| 关 键 词： | 无碴轨道 桥上无缝道岔 附加温度力 位移 |
| 文章编号： | 1673-0291(2007)01-0089-04 |
| 修稿时间： | 2005年8月5日 |
Analysis of Mechanical Characteristics to the Jointless Switch on Ballastless Bridge |
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| SUN Da-xin,GAO Liang,LIU Yan-feng.Analysis of Mechanical Characteristics to the Jointless Switch on Ballastless Bridge[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2007,31(1):89-92. |
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| Authors: | SUN Da-xin GAO Liang LIU Yan-feng |
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| Abstract: | With the help of Finite Element method,the model of the longitudinal force and displacement of jointless switch on ballastless bridge is established.It analyses the influences of some track parameters to the jointless switch such as amplitude of track temperature's variation,resistance of fastener,gap limit of retainer at heel,the numbers of clamper at the end of wing rail and so on.Results show that the longitudinal forces and displacement of jointless switch on ballastless bridge is deeply influenced by the amplitude of track temperature's variation and resistance of fastener,while the resistance of retainer at heel and clamper at the end of wing play a secondary role in the change of longitudinal force and displacement. |
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| Keywords: | slab track jointless switch on bridge additional longitudinal force displacement |
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