| 铺设锁定轨温差对无缝道岔受力与变形的影响 |
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| 引用本文： | 王丹,王平.铺设锁定轨温差对无缝道岔受力与变形的影响[J].西南交通大学学报,2006,41(1):80-84. |
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| 作者姓名： | 王丹 王平 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 基金项目： | 教育部博士点基金资助项目（20050613007） |
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| 摘 要： | 为了更好地指导无缝道岔的设计、施工和维护，探讨了不同线路间存在铺设锁定轨温差时，铺设锁定轨温差对无缝道岔受力和变形的影响以及与道岔联结型式、道岔号码、辙叉型式和道床纵向阻力的关系．结果表明，当无缝道岔与相邻线路或相邻道岔间存在铺设锁定轨温差时，传递至无缝道岔上的纵向力增大，导致无缝道岔受力与变形增大．
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| 关 键 词： | 锁定轨温 无缝道岔 温度力 伸缩位移 |
| 文章编号： | 0258-2724（2006）01-0080-05 |
| 收稿时间： | 2004-06-04 |
| 修稿时间： | 2004-06-04 |
Effects of Stress-Free Temperature Difference on Force and Displacement of Welded Turnouts |
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| WANG Dan,WANG Ping.Effects of Stress-Free Temperature Difference on Force and Displacement of Welded Turnouts[J].Journal of Southwest Jiaotong University,2006,41(1):80-84. |
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| Authors: | WANG Dan WANG Ping |
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| Institution: | School of Civil Eng. , Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | In order to better guide the design, laying and maintenance of welded turnouts, the effects of stress-free temperature difference between two railway lines on the rail displacement and temperature force of a welded turnout were investigated. In addition, the influences of the link style of turnouts, the number of turnout, the style of turnout frog and the ballast resistance of road bed on the rail displacement and temperature force were analyzed. The results show that stress-free temperature difference between a welded turnout and an adjacent line or a turnout will lead a big longitudinal force and a great displacement of the welded turnout. |
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| Keywords: | stress-free temperature welded turnout temperature force temperature displacement |
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