无控制人行横道处城市道路通行能力研究

Study of In-City Capacity Affected by Pedestrian Crossing based on Uncontrolled Crosswalk

为了有效缓减人机冲突,确保行人安全过街,提高城市道路的通行能力,从无控制人行横道处研究行人过街对城市道路通行能力的影响.首先明确行人过街影响区、行人过街影响时间等概念,确定道路通行能力在行人过街影响下的计算公式;结合调查数据,得到过街行人到达率与影响时间的统计关系,建立行人过街对通行能力影响的数学模型;最后针对城市道路的典型路段,进行实例计算与仿真评价,通过对比模型计算值与仿真模拟值,对模型进行有效性验证.

In order to effectively relieve the confliction of people and motor vehicle for making the safety of pedestrians crossing the road and improving the capacity of urban roads, the influence of pedestrians crossing the roads on the capacity of urban roads in uncontrolled crossing the pedestrian crosswalk is studied. Some conceptions are defined, and the general formula of the road capacity is confirmed when pedestrians are crossing the road based on three pre-assumptions. Combining with the survey data,the statistics relation between the arrival rate of crossing pedestrians and the affected time are achieved. The empirical mathematical model of pedestrian crossing on the capacity impact is constructed, and typical section of urban roads is choosen for case calculation and simulation evaluation. According to contrasting and analyzing the model calculated value and simulated value, the efficiency of the model is validated and improved.