地铁既有线区间增设车站及其配线纵向坡度设计研究

针对既有线改造工程中的区间增设车站的纵向坡度可选取范围进行初步探讨，从列车停止平稳性、列车启动和制动、车站纵向排水、车站建筑及无障碍设计、车站站台门安装、车站设置配线等几个角度对纵向坡度的要求进行初步分析，并得出以下结论：1)必须对地铁列车的停放制动以及列车的启动和制动的技术性能进行必要及足够的校验、验证，这是决定在既有线区间增设车站的纵向坡度是否可适度放大的关键所在；2)综合考虑地铁列车的停放制动以及列车启动和制动等技术性能，车站纵向坡度应该允许适度放大，但考虑车站建筑的设计以及乘客使用便利，这个幅度也不宜过大；3)从道岔的养护和维修角度，建议允许设置道岔的纵向坡度不宜超过现有规范10‰的规定。

Discussion on Design of Longitudinal Gradient of Additional Stationsand Wiring in Metro Existing Line Sections

This paper preliminarily explores the selection range of longitudinal slope for adding stations in existing line renovationproject, analyzing the requirements for longitudinal slope from several perspectives, including train stopping smoothness, trainstarting and braking, station longitudinal drainage, station building and accessibility design, station platform door installation,and station wiring. Some conclusions are presented: (1) Verifying the technical performance of parking braking, starting, andbraking of subway trains is the key to determining whether the longitudinal slope of adding stations to existing line sectionscan be moderately increased; (2) Considering the parking and braking performance of subway trains, as well as the technicalperformance of train starting and braking, the longitudinal slope of the station should be allowed to be moderately increased.However, considering the design of the station building and the convenience of passenger use, the increase should not be toolarge; (3) From the perspective of maintenance and repair of switches, it is recommended to ensure that the longitudinal slopeof switches does not exceed the existing regulation of 10%.