关键词: 城市交通, 通行能力, 仿真模型, 异质性, 行人, 楼梯

Abstract:

Pedestrians are regarded as homogeneous ones without their own individual characteristics in the current study on the capacity of subway stairways. But actually, pedestrians are different individuals with heterogeneous characteristics. Due to the lack of the research on this issue, this paper classifies persons into pedestrians in pairs, fast ones and common ones by introducing the concept of heterogeneous pedestrian and analyzing the observed data of the subway station stairway. Then the improved floor field model, a capacity simulation model of stairway is presented. We validate the precisions of the proposed model under the conditions of homogeneous and heterogeneous pedestrians. At last, three situations are simulated and analyzed based on different space occupied, different speed, different space occupied and speed respectively. The results show that the capacity of stairway is not a constant value and it changes with different component proportions of heterogeneous pedestrians. The heterogeneity of pedestrian has an important influence on the capacity of the stairway.

Key words: urban traffic, capacity, simulation model, heterogeneity, pedestrian, stairway