胶轮导轨电车平交道口轨道结构参数优化研究  

On Optimizing Track Structure Parameters of Rubber-tyred Tram at Level Crossing

作　　者：亓伟 刘宇 尹明 QI Wei;LIU Yu;YIN Ming(Chengdu Vocational&Technical College of Industry,Chengdu 610218,China)

机构地区：[1]成都工业职业技术学院,成都610218

出　　处：《成都航空职业技术学院学报》2021年第4期70-73,共4页Journal of Chengdu Aeronautic Polytechnic

基　　金：西南轨道交通职业教育集团关于2020年科研项目(xngd202005),成都工业职业技术学院校级科研项目(2020YJ-15)。

摘　　要：有轨电车与社会车辆在平交道口的相互影响会造成轨道结构的严重伤损。为此建立胶轮导轨电车平交道口轨道结构有限元模型分析得出平交道口处钢轨变形、钢轨所受最大压应力和扣件抗拔力不满足要求。由轨道结构关键参数得知,填充材料弹性模量和扣件间距变化对降低上述指标效果显著。在此基础上,提出填充材料弹性模量10MPa、扣件间距0.4m或填充材料弹性模量15MPa、扣件间距0.5m时的优化方案,可以保证轨道结构安全和胶轮导轨电车安全通过平交道口的要求。The track structure of a tram can be seriously damaged at the level crossing due to mutual influence from tram load and social vehicles.The finite element model of the track structure at the level crossing of rubber-tyred rail tram is established.Analysis shows that deformed track at level crossing results from the fact that maximum compressive stress of the track and the pullout resistance of fasteners haven’t met the requirements.By analyzing the key parameters of track structure,it is found that changes in elastic modulus of filling material and fastener spacing have significant effects on reducing the above indexes.In view of this,two optimization schemes are proposed--the elastic modulus of filling material is 10MPa and the fastener spacing is 0.4m,or the elastic modulus of filling material is 15MPa and the fastener spacing is 0.5m,which can ensure the safety of track structure and the safe passing of rubber-tyred tram at the level crossing.

关 键 词：胶轮导轨电车 轨道结构 平交道口 

分 类 号：U213.212[交通运输工程—道路与铁道工程]