Optimum Path Analysis of Post-Earthquake Transportation Considering Multi-Objective Based on GIS

Through the investigation and analysis of the status and influence factors of post-earthquake disaster on urban transport system, this paper aims to introduce the authors' study of route choice for post-earthquake transporting exigency based on the principles of timely, security and economy of the transport route choice under exigency situation. To describes the above three decision-making parameters in accordance with mathematics theory, it is necessary to establish their objective functions through processing the dimensionless technique and weight aggregation so as to set up a mathematical model for evaluating the utility of prepared route, and model merges collected information according to the expectation utility attributes as well as to make the multi-attribute decision-making problems into the single one. In order to find a scientific post-earthquake transportation route and define a scheduling decision-making method in an emergency rescue transporting center and enhance the response effect of the emergency rescue, it is necessary to choose and establish the highest expectation utility plan. Developed a decision information system which has the ability of transportation system management, optimum path analysis and searching using the network-analysis model of ArcGIS Engine. On the needs of earthquake disaster relief the system can analyze and simulate the optimum path for the command and rescue, relief material transport, fire fighting dispatching, ambulance dispatching and shelter path indication.