Researches On Decision Methods For Traffic Evacuation Within Different Scenarios In City Large-special Events

With the development of urban process and the improvement of people’s material and cultural living standards, more and more large-special events have been held in major cities recently. During the large-special events, the city traffic would come under huge pressure since mass travelling people and vehicles can lead to the jam of road network. Obviously, it is impractical to increase road transportation facilities in a short time, which is also cause a waste of resources. Therefore, how to organize the evacuation traffic activity of personnel and vehicles effectively will become a very interesting research topic.In this thesis, the traffic evacuation problem in large-special events will be studied and its two key sub-problems, that is, traffic flow assignment and travel route choice, will be investigated in detail based on the city traffic managers and travelling people respectively. The main contents of this thesis can be described as follows.Firstly, the research works on large-special events are overviewed from both the microscopic perspective, that is, how to choose the travelling route, and the macroscopic one, which means how to assign the traffic flow. In addition, the applications on simulation technology in traffic evacuation are introduced in this thesis.Secondly, the mathematical programming models on traffic evacuation in large-special events are established based on the theory of traffic flow assignment. According to the features of these models, the corresponding solution algorithms are designed via LINGO and ILOG software. A simulation case from the real data of Shenyang Olympic Sports Center that is the main scene of 12th national games is used to demonstrate the validity of the proposed models and solution algorithms.Thirdly, the simulation of traffic evacuation in large-special events is investigated via Arena software. In detail, different entity objects are defined, the corresponding logical models are designed and the animation of traffic evacuation in Shenyang Olympics Sports Center is implemented. Moreover, dynamic simulation when the traffic flow on the road could change is also implemented through embedding VB module in the above designed simulation model.Finally, the research works in this thesis are summarized with discussions on the future work.