由于施工区的存在，城市道路信号交叉口通行能力下降，车流运行混乱.本文为了从微观层面研究信号交叉口施工区交通流运行特性，以初始社会力模型为基础，首次提出一种新的适用于交叉口交通流的社会力模型；通过对影响岛式施工区通行能力的因素进行分析，设计出一套数据采集方案；利用实测数据并结合遗传算法对提出的模型进行标定，使用统计学指标对标定结果展开评价.结果表明，提出的新模型仿真得到的交通量与实测值平均绝对相对误差仅为0.028，能为信号交叉口施工区交通流模拟提供参考.%The capacity of urban signalized intersection will decrease and traffic flow will run chaotically because of a work zone sets in the intersection. In order to study urban signal intersection work zone traffic flow at a micro level, it puts forward a new applicable social force model of intersection traffic flow for the first time, based on initial social force model. Factors affecting the capacity of island work zone are analyzed. A data collection program is designed to obtain data of work zone intersection. The measured data and genetic algorithm (GA) are used to do the presented model calibration, and then it is evaluated with several statistical indicators. The results show that the average absolute relative error of simulation traffic data and real data is 0.028, so it can make a reference to analyze the traffic flow of urban signal intersection work zone.
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