The central business district is a densely populated area, compared with other evacuation modes, pedestrian evacuation is the most effective evacuation mode in case of emergency. During emergency evacuation, the pace of the crowd and the effective width of the roads are closely relevant. At present, there are differences in the setting of effective width of road in the central business district at home and abroad, and they pay more attention to the general traffic value of road, without too much research and exploration on the setting of effective width of road in emergency evacuation. In the case of limited space resources, it is increasingly important to study the effect of effective width of road on pedestrian evacuation in the central business district. Based on this, this paper conducts Research measure on the effective width of road, business center of the Three Gorges Square in Chongqing. After research measuring, it is modally analyzed according to relevant regulation. The result of the research shows that the main pedestrian road of Three Gorges Square can’t meet the demands of the urgent evacuation. And when the effective width of the roads w ≥7.6 m, it can meet the demands of high-density pedestrian evacuation in commercial center.

中央商务区是一个人口稠密的地区，与其他疏散模式相比，行人疏散是紧急情况下最有效的疏散模式。在紧急疏散期间，人群的步调和有效道路宽度密切相关。目前，国内外中央商务区道路有效宽度的设置存在差异，他们更加关注道路的一般交通价值，而没有对道路有效宽度的设置进行过多的研究和探索。紧急疏散道路。在空间资源有限的情况下，研究道路的有效宽度对中央商务区疏散行人的影响变得越来越重要。在此基础上，本文对道路有效宽度进行了研究，重庆三峡广场商务中心。经过研究测量，根据有关规定进行模态分析。研究结果表明，三峡广场主干道不能满足紧急疏散的要求。当道路有效宽度w≥7.6m时，可以满足商业中心高密度人流疏散的要求。