基于路网脆弱性的紧急情况下交通疏散诱导模型  

Study on Traffic Guidance Model on Emergency Based on Road Net Frangibility

作　　者：王富[1] 李杰[1,2] 石永辉[3] 

机构地区：[1]武汉工程大学交通研究中心 [2]华中科技大学土木工程与力学学院,湖北武汉430074 [3]武汉市公安局交通管理局科研处

出　　处：《中国安全科学学报》2012年第12期35-40,共6页China Safety Science Journal

基　　金：国家软科学研究计划项目(2010GXS5D237)

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。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.

关 键 词：紧急情况 交通流 交通疏散 路网脆弱性 交通诱导 

分 类 号：X913.4[环境科学与工程—安全科学] U491[交通运输工程—交通运输规划与管理]