疏散规模对亚区域人群疏散过程影响的模拟研究

为了研究不同疏散规模对疏散动态特征的影响，基于矢量模型构建城市亚区域人员疏散模型，采用个体行为模拟技术和矢量二维连续空 间解析方法对城市亚区域疏散中的个体行为进行模拟。通过设置不同的疏散规模，在Legion平台模拟分析疏散人口数对疏散运动时间、疏散速 率、空间使用率人员密度等疏散动态特征的影响。结果表明，随着疏散人数的增加，总疏散运动时间变长，但其变化率远低于疏散人数变化率 ；最大疏散速率增大，但出现最大疏散速率的时间随之延后；空间使用率增加，沿小区次干路、主干路到小区出口变化明显；拥堵情况增加， 小区主干路、次干路与主干路交叉口及小区出口处拥堵较为严重。

Simulation study on influence of evacuation scale on the sub-regional population evacuation

In order to study the influence of different evacuation scale on the dynamic characteristics of evacuation, an urban sub-regional evacuation model was constructed based on vector model, and the individual behavior during evacuation process were simulated by using the individual behavior simulation technology and the vector two-dimensional continuous space analysis method. By setting different evacuation scale, the influence by number of evacuation personnel to the dynamic characteristics of evacuation, such as evacuation time, evacuation rate, space utilization rate and personnel density etc., was simulated and analyzed on Legion platform. The results showed that with the increase of number of evacuation personnel, the total evacuation time is longer, but its variation rate is much less than that of number of evacuation personnel. The maximum evacuation rate increases, but the time to present the maximum evacuation rate postpones. The space utilization rate increases, and the change is obvious along the secondary road and major road to the exits of district. The congested status increases, and the congestion is more serious in the major road, the intersection of secondary road and major road, and the exits of district.