| 道岔尖轨轨下刚度改变对轮轨动力性能的影响 |
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| 引用本文： | 朱剑月,顾福民,罗雁云. 道岔尖轨轨下刚度改变对轮轨动力性能的影响[J]. 同济大学学报(自然科学版), 2002, 30(2): 198-202 |
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| 作者姓名： | 朱剑月 顾福民 罗雁云 |
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| 作者单位： | 1. 同济大学沪西校区铁道与城市轨道交通研究院,上海,200331
2. 上海铁路分局苏州工务段,江苏 苏州 215000 |
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| 摘 要： | 运用车辆－轨道耦合动力学理论，通过建立道岔垂向几何及刚度不平顺激扰模型，模拟计算了提速列车对提速道岔的动力影响。详细比较了提速道岔尖轨轨下增加弹性前后提速列车对提速道岔的动力作用性能，并进行了实验验证。结果表明：提速道岔尖轨轨下增加弹性以后可大大减轻基本轨至尖轨区过渡段轮－岔垂向相互作用，有效改善道岔的动力性能，延长滑床板及道岔的使用寿命。
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| 关 键 词： | 提速道岔 尖轨 弹性 轮轨相互作用 轨下刚度 轮轨动力性能 车辆－轨道耦合动力学理论 |
| 文章编号： | 0253-374X(2002)02-0198-05 |
| 修稿时间： | 2001-04-21 |
Comparison Investigation on Dynamic Characteristics by Changing Stiffness under Switch Rail of Speed- raising Turnouts |
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| ZHU Jian-yue ,GU Fu-min ,LUO Yan-yun. Comparison Investigation on Dynamic Characteristics by Changing Stiffness under Switch Rail of Speed- raising Turnouts[J]. Journal of Tongji University(Natural Science), 2002, 30(2): 198-202 |
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| Authors: | ZHU Jian-yue GU Fu-min LUO Yan-yun |
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| Affiliation: | ZHU Jian-yue 1,GU Fu-min 2,LUO Yan-yun 1 |
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| Abstract: | With the excitation models of the vertical geometric and stiffness irregularities on turnouts,the dynamic effects of the speed-raising trains on turnouts is investigated with the theory of vehicle-track coupling dynamics.The dynamic characteristics of the turnouts is compared in detail after they are laid elastically.The results show that the elasticity under the switch rail could alleviate the vertical wheel/frog interaction effectively from the rail to the switch rail,improve the dynamic characteristics of the turnouts and extend the usage life of the baseplate and the turnouts. |
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| Keywords: | speed-raising turnout switch rail elasticity wheel-rail interaction |
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