地铁车辆头车加长对限界影响的分析

Analysis on Effects of Metro Head Car Lengthening on Metro Gauge

地铁车辆外形尺寸是限界计算的基础,但目前城市轨道交通车辆尚是非标产品,尺寸各异,特别是头车的长度经常变化,给限界设计带来了很大难度。针对这个问题,结合长沙地铁2号线工程,对地铁车辆头车加长对限界产生的影响进行了分析,并推导出计算方法,提出抵消头车加长影响的削减办法。

Combining with Changsha metro Line 2 project,the effects of head car lengthening of metro vehicle on metro gauge are analyzed.Then,the calculation method is deduced,and the reduction approach for offsetting the negative effect from the head car lengthening is presented.