中文摘要：

为提高紧急情况下交通疏散速度,实现对疏散交通流的诱导,需要建立紧急情况下的交通流诱导模型。根据紧急情况下路网特性,提出路网脆弱性指标,并将其引入交通流诱导模型,对常态交通流诱导模型进行改进,得到基于路网脆弱性的紧急情况下交通疏散诱导模型,并用实测数据求解模型参数。分别用常态交通流诱导模型和文中的改进模型进行实例计算,结果表明,经过改进模型诱导之后,高流量和低流量路段相对减少,交通流在路网中的分布更均衡、达到系统最优的效果。对紧急情况下的交通流进行有效诱导,可提高疏散路网利用效率,加快应急交通疏散。

英文摘要：

It was believed by the authors that to guidance model for guiding traffic flow was needed. evacuate traffic flow quickly in an emergency, a traffic According to road net characteristics in an emergency, road net frangibility was put forward and inducted into the model for traffic guidance under normal condition, a model for traffic guidance in an emergency was built, and this model was demarcated by real data. At last, the two models were applied. The results indicate： high flow and low flow roads became less, traffic flow was more uniform by the improved model. Guiding traffic flow for emergency can promote efficiency of road net and evacuate traffic flow faster.