居住区型轨道站出入口客流分布系数模型修正与适用条件研究

Modification and applicable condition of Passenger Flow Distribution Coefficient Model of Subway Station’s Entrances in Residential Region Type

摘要:

已有的空间句法轴线模型在预测轨道站出入口客流分布系数时忽略了区域内建筑这一重要因素，而不同类型建筑对人们出行活动的产生和吸引量、出行分布的作用大相径庭。选取建筑高度、建筑密度作为核心指标，对轴线模型进行修正。根据居住区轨道站各出入口所对应的周边半径500m区域内的建筑密度差异和国内外相关规范对高层建筑的规定，得出修正轴线模型的适用条件。采用上海和南京两个城市居住区轨道站进行修正模型及适用条件的验证，得出修正轴线模型公式准确率达到91%以上。认为修正模型及适用条件具有一定的普适性，可为轨道站出入口步行通道设计、出入口公交站点和自行车停泊位布局提供理论支撑。

Abstract:

This paper points out that the tranditional axial model does not consider the key factor of the propertied of buildings around subway stations, however, different buildings have different generation and attraction of pedestrian activities. Then the paper selects building height and building density as two indexes to modify the axial model. According to the difference of building density of 500m radius area around a subway stations’ entrances and the domestic and foreign relevant rules for high-rise building regulations, the paper draws the conclusion of the applicable condition of the modified model. At last this paper compares the modified model’s applicability of subway stations in Shanghai and Nanjing, and finds out the accuracy of modified model is both higher than 91%, so the conclusion is drew that the modified model and applicable condition can be widely-used in different metropolis. This research provides theoretical support to the design of passageway width, fare gates number, parking facilities and bus station layout outside the subway station.