非常规地铁站台曲线半径及超高的设计与研究

Design and Research on Curve Radius and Superelevation of Unconventional Subway Platforms

针对广州地铁11号线如意坊站缓和曲线最小半径及曲线超高设置超过《地铁设计规范》规定的问题,对地铁站台最小曲线半径、曲线超高以及缓和曲线侵入站台长度等控制因素进行总结分析。通过对站台边缘与车门门槛最大间隙值、站台门与车门最大间隙值、缓和曲线长度、未被平衡离心加速度值、横向加速度最大值、站台范围内车辆倾斜度、车辆地板面与站台面高差值等控制性指标进行验证核查,结果表明,如意坊站有效站台范围内缓和曲线曲率半径小于规范要求最小值,并且曲线超高设置大于15 mm实际可行,并在节约投资、缩短工期方面取得较好效果,为后续类似工程设计分析提供参考。

To address the issue of the minimum radius of the transition curve and superelevation at RuYiFang Station on Guangzhou Metro Line 11 exceeding the provisions of the Code for design of metro,this study summarizes and analyzes the controlling factors of the minimum curve radius,superelevation,and the length of the transition curve into the platform.We checked and verified the maximum clearance between platform edge and door threshold,maximum clearance between platform screen door and train door,length of the transition curve,unbalanced centrifugal acceleration,maximum transverse acceleration,inclination of trains within the platform range,and height difference between the train floor and platform surface.The results show that it is practicable to set the curvature radius of the transition curve less than the normative minimum value and the superelevation above 15 mm at RuYiFang Station.This approach aids in saving investment and shortening the construction period.The study offers a new method that can be used as a reference in similar projects.