Application Of FIM In Freeway Network In Disaster Situation

Highway is an important component of transport facility, which could increase running speed of automobile, shorten travel time, eliminate interference between motor vehicle, it could reduce the number of accidents due to its characteristics of full enclose, interchange, and separation of travel directions. Furthermore, freeway has become one of important infrastructures which could help to benefit economy and social developments. Therefore, how to maintain freeway facilities, construct freeway with scientific and reasonable methods, and rapidly restore highway network under natural disaster, are deemed to be critical.The paper chooses the care study of freeway in Liaoning, P.R.C, and provides emergency response countermeasures under natural disaster by adopting Flow Interdiction Model (which is a network method widely utilized in the field of geosciences). The research as followed.1. Transform FIM in order to fit the study on the freeway network problems with multiple influential factors.2. Deduce vehicle flow on OD path in the research network by utilizing traffic volume data obtained from field investigation and unconstrained gravity model.3. ArcGIS software defines nodes and edges'attributes in the network. In the meantime, the visualization of the study results are realized by ArcGIS software. Java enumerates all the feasible OD path by using the Shortest Path Algorithm. Lingo obtains the optimal solution, according to the feasible OD path. Its generation results are one edge or combination of edges.Provide emergency response plan and propose remedial approaches to achieve effects of full restoration of the freeway network by means of FIM model.