首都机场线分叉处大号码道岔的选型及设计应用

Type Selection,Design and Application of Large-size Turnouts at the Bifurcation Points on Capital Airport Express Line

为满足分叉运营的需要,首都机场线直线电机系统首次在国内城市轨道交通领域采用了60kg/m钢轨18号可动心轨道岔。对分叉处大号码道岔的方案经过多次反复、深入的研究论证,并结合直线电机车辆特点、运营要求、造价、工期、轨道结构安全、养护维修、轨旁设备的接口技术要求等各方面的因素,进行了针对性的改进设计,使安全可靠性更高。

To meet the demand of diverging operation,No.18 movable-nose frog turnouts with 60 kg/m rails have been for the first time applied in domestic urban rail transit on Capital Airport Express line for linear motor system.Discussions and study about the options for the turnouts at bifurcation points have been carried out repeatedly and rigorously.Considering the features of linear motor vehicles,operation requirements,cost,time limit,safety of rail structure,maintenance,technical requirements for the interface of rail-side installations and other factors,improved design for the turnouts was performed with safety and reliability enhanced.