普通轨与槽型轨对现代有轨电车小半径曲线通过能力的影响
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摘要
为研究不同类型钢轨上有轨电车的小半径曲线通过能力,基于多体动力学理论,建立了四模块低地板现代有轨电车仿真模型。在模型中考虑CHN60钢轨与60R2槽型轨的影响,并依据规范设置了3条小半径曲线线路,最后以车辆脱轨系数和轮重减载率为评价指标,对有轨电车小半径曲线通过能力进行评价分析。结果表明:两种钢轨上的有轨电车非线性临界速度均能满足车辆运行要求,且运行在CHN60轨上的车辆具有更好的非线性运动稳定性;在小半径曲线线路上运行时,60R2槽型轨上的车辆具有更好的稳定性,且槽型轨断面具有一定的护轨功能,因而在有轨电车钢轨选型上,建议使用槽型钢轨。
In order to study the small radius curve passing capacity of modern tram on different types of rails,based on multi-body dynamics theory,a simulation model of modern tram with four modules is established. In which the influence of CHN60 rail and 60 R2 groove rail is considered and 3 kinds of small radius curve are set up according to subway code. On this basis,the vehicle derailment coefficient and wheel load reduction ratio are taken as the evaluation indexes to evaluate the small radius curve passing capacity of modern tram on different types of rails. The results show that the vehicle nonlinear critical speed on two types of rail can meet the requirements of vehicle operation,and vehicles running on CHN60 rail have better nonlinear motion stability;while running on60 R2 grooved rail with small curve radius, the stability is better than running on CHN60 rail. Since the groove rail section has certain protection functions for the rail,it is recommended for rail type selection.
In order to study the small radius curve passing capacity of modern tram on different types of rails,based on multi-body dynamics theory,a simulation model of modern tram with four modules is established. In which the influence of CHN60 rail and 60 R2 groove rail is considered and 3 kinds of small radius curve are set up according to subway code. On this basis,the vehicle derailment coefficient and wheel load reduction ratio are taken as the evaluation indexes to evaluate the small radius curve passing capacity of modern tram on different types of rails. The results show that the vehicle nonlinear critical speed on two types of rail can meet the requirements of vehicle operation,and vehicles running on CHN60 rail have better nonlinear motion stability;while running on60 R2 grooved rail with small curve radius, the stability is better than running on CHN60 rail. Since the groove rail section has certain protection functions for the rail,it is recommended for rail type selection.
引文
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[3]陈雷.四模块100%低地板有轨电车动力学性能研究[D].成都:西南交通大学,2015.
[4]罗世辉.大连低地板有轨电车的动力学性能[J].机车电传动,2001(3):28.
[5]罗世辉.轨道车辆独立车轮的动力学分析[J].铁道学报,1999(5):15.
[6]李创,孙守光,任尊松.独立车轮转向架车辆曲线通过性能分析[J].北京交通大学学报,2003,27(5):86.
[7]王明举.低地板轻轨车辆轮轨接触问题的研究[D].大连:大连交通大学,2008.
[8]赵伟,王春艳,张军,等.有轨电车轮轨型面匹配问题的研究[J].铁道学报,2011,33(2):34.
[9]马威红,沈继强,祝晓波.现代有轨电车车辆通过曲线时的几何偏移量计算[J].城市轨道交通研究,2015(增1):39.
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