地下车站出入口地面结构的精细化设计

Refined Design of Ground Structure for Underground Station Entrance

在对城市轨道交通车站的调研中发现不少地下车站存在出入口尾部结构突出地面的问题。该问题主要受制于出入口的外部控制因素(出入口周边室外场地标高与坡度)和内部控制因素(出入口内部自动扶梯、结构与装修空间需求)。通过对各项控制因素的系统梳理,提出地下车站出入口地面结构精细化设计的思路与关注点。根据各项控制因素之间的逻辑关系得出具备可操作性的设计参数,并以苏州市轨道交通S1线标准出入口设计方案的优化为例,验证了设计参数的适用性及精细化设计的效果。

The investigation of different urban rail transit stations has found many protruding from ground problems related to the underground structure of station entrance tail,which is mainly determined by both the external(outdoor site elevation and slope around the entrance)and the internal(demands of escalator,structure and decoration space)factors.Based on a systematic analysis of various control factors,detailed design ideas and concerns of the out-of-ground structure for underground station entrance are put forward.According to the logical relationship among control factors,operable design parameters are obtained.Then,based on the optimization of standard entrance design for Suzhou rail transit Line S1,the applicability of design parameters and the effect of fine design are verified.