| 基于统一公式的无缝道岔稳定性分析 |
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| 引用本文： | 田春香,王平.基于统一公式的无缝道岔稳定性分析[J].西南交通大学学报,2003,38(4):375-379. |
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| 作者姓名： | 田春香 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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| 摘 要： | 基于普通无缝线路稳定性分析的统一公式，探讨了无缝道岔转辙器稳定性的计算方法．以秦沈客运专线18号道岔为例，分析了安全系数与波长、原始塑性变形矢度及容许变形矢度的关系，并给出了全焊情况下无缝道岔稳定性的简化计算公式．分析表明，无缝道岔辙跟处是发生失稳的薄弱部位，建议取原始弹塑性弯曲矢度2mm，容许变形矢度1mm作为无缝道岔稳定性的检算条件．
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| 关 键 词： | 铁路工程 无缝道岔 稳定理论 容许变形矢度 容许温升 |
| 文章编号： | 0258-2724(2003)04-0375-05 |
Stability Analysis of Jointless Turnout Based on General Formula |
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| TIAN Chun-xiang,WANG Ping.Stability Analysis of Jointless Turnout Based on General Formula[J].Journal of Southwest Jiaotong University,2003,38(4):375-379. |
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| Authors: | TIAN Chun-xiang WANG Ping |
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| Abstract: | Based on the general formula for the stability analysis of common jointless trac ks, the calculation method for the stability of switches of a jointless turnout is put forward. By taking the No.18 turnout in the Qinhuangdao-Shenyang pa ssenger express line as an example, the relationship between the safety coeffic ient and the wave length, the original plastic camber and the allowable deformat ion camber is discussed, and a simplified formula for jointless turnouts comple tely welded is given. The results show that the frog heel of jointless turnouts is easy to lose stability, so the basic verification requirement for the stabili ty of jointless turnouts is suggested as 2 mm for the original elastoplastic all owance camber and 1 mm for the allowable deformation camber. |
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| Keywords: | railway engineering jointless turno ut stability theory allowable deformation camber allowable temperature rise |
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