通过研究轨道系统不连续支承钢轨柔度的变化及轮轨系统动柔度关系,提出了“轮轨柔度差变”机理,该机理能有效地描述钢轨波浪磨耗产生和发展的原因,通过轨道动柔度理论计算和实验验证及运营条件下实际钢轨波浪磨耗现象的比较,得出一致的结论,从而充分证明了轮轨柔度差变和钢轨不连续支承及轨道支承刚度变化是钢轨波浪磨耗形成的主要原因之一,根据本文提出的钢轨波浪磨耗产生和发展机理,降低轮轨柔度差变及控制钢轨振动能够有效抑制钢轨波浪磨耗的形成与发展.通过在线对采用低刚度谐振动力阻尼隔振扣件的线路与原有普通线路上采用刚度较高扣件的轨道线路上钢轨粗糙度在不同时间间隔进行的测试比较,结果表明,在普通线路上采用刚度较高扣件的轨道线路上钢轨的粗糙度较高,而在安装低刚度谐振动力阻尼隔振扣件的线路上钢轨粗糙度反而有所下降,同时其钢轨本身在垂直方向及横向振动水平也有所下降.
参考文献
| [1] | 温泽峰 .钢轨波磨产生机理研究[D].西南交通大学,成都,2006. |
| [2] | Wang A B;Cox S J.Noise characteristics of high speed track with rail pads of different stiffness[A].Munich,Germany,1998 |
| [3] | Wang A B;Cox S J.Effect of rail pad stiffness on rail roughness growth and wayside noise levels on high speed track[A].Edinburgh,UK,2003 |
| [4] | Wang A B;Wang Z Q;Zhang P;Zhang Z Y.Study on the mechanism of discontinuous support stiffness on the development of rail corrugation[A].北京,2014 |
| [5] | H. Ilias .The influence of railpad stiffness on wheelset/track interaction and corrugation growth[J].Journal of Sound and Vibration,1999(5):935-948. |
| [6] | Grassie S.L .Corrugation:variation on an enigma[J].Railway Gazette International,1990,146(07):531-533. |
| [7] | Grassie S L;Kalousek J .Rail corrugation:characteristics,causes and treatments[J].Journal of Rail Rapid Transit Proceeding of Institute of Mechanical Engineering,1993,207F:57-68. |
| [8] | Grassie S L;Cox S J .The dynamic response of railway tracks with flexible sleepers to high frequency vertical excitation[J].Proceedings of Institute of Mechanical Engineering,1984,198D(07):117-124. |
| [9] | Wang A B;Wang Z Q;Zhao Z P.Effects of track stiffness and tuned rail damper on rail roughness growth and rail vibration levels on metro systems[A].Sweden,2013 |
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