设置小交路的T型地铁换乘站方案研究

城市核心区的地铁换乘站一般位于繁华地带，车站规模较大、附属建筑较多，且受到线路3站2区间方案的制约，车站方案设计复杂。如果换乘站的其中1条线路设置了小交路，则车站方案设计难度进一步加大，小交路清客的瞬时集中客流与进站、候车、换乘客流形成对冲，增加客流组织难度。以常规的2线十字交叉换乘站为例，通过分析清客过程中的4种工况，采用静态计算方式分析清客状态下的侧站台占用宽度。研究结果表明： 考虑小交路时，采用静态计算的站台宽度较正常情况大，同时，由于客流对冲形成的客流无序状态将进一步加剧侧站台的压力。最后结合案例分析，提出加宽侧站台和增加1个侧站台2种方案，并建议尽量避免将小交路设置在客流量较大的换乘车站。

Study on Scheme of T shaped Metro Transfer Station with Part Route

The metro transfer stations of urban core area are always located in bustling area with large scale and multiple auxiliary buildings. Restricted by the scheme of three station and two section, the station design scheme is complex; when the part route scheme is adopted, the scheme design difficulty increases; and the instantaneous centralized passenger flow of the part route will be offset with the passenger flow of arrival, waiting and transfer, which will increase the difficulty of passenger flow organization. Taking the double line cross transfer station for example, analysis is made on 4 working conditions in the process of passenger clearing, and the occupied width of side platform in the passenger clearing state is analyzed by static calculation. The research results show that: (1) When considering part route, the static calculated platform width is significantly larger than conventional situation. (2) The passenger flow disorder caused by the passenger flow hedging will further aggravate the pressure on the side platform. It is put forward that widening the platform or adding one side platform, and setting the part route at the area with small passenger flow can help to improve the scheme effect.