An Evacuation Vehicle Flow Allocation Method Based on Traffic Basic Map

Abstract

The invention discloses an evacuation vehicle flow distribution method based on a basic traffic map, which is suitable for the construction of emergency plans for large-scale activities, natural disasters or major accidents and emergency response when emergencies occur, and specifically relates to an evacuation vehicle based on a basic traffic map traffic distribution method. The map is parsed into a Cartesian coordinate system, and the circle layer of the evacuation range is determined according to the evacuation center point through an analytical method. Using the traffic simulation method and the numerical fitting method, the traffic simulation is carried out on the road network in a specific area, and the traffic basic map of the key road sections on the corresponding evacuation circle layer is obtained by fitting. After the basic graph is obtained, an unconstrained optimization model is established, and the maximum flow of key road sections is obtained by derivation. Finally, according to the maximum flow obtained, the probability of choosing the destination for the evacuation traffic flow is assigned.

Description

technical field [0001] The invention relates to an allocation model, and more specifically relates to an evacuation vehicle flow allocation method based on a basic traffic graph. Background technique [0002] Emergency evacuation is very important to protect people's lives and property, but it also faces many challenges, especially in China, which has the largest population in the world. When the evacuation traffic flow is generated, it will be loaded into the road network explosively, causing some road sections to be oversaturated, forming local congestion. This will lead to a decrease in evacuation efficiency, which is not only not conducive to the evacuation of the dangerous area as soon as possible, but also has a negative impact on the original road network traffic. Moreover, due to rumors, personal preferences, and incomplete information, these factors may affect the route selection of evacuees. Therefore, in the case of emergency evacuation, the spatial distribution...

AI Technical Summary

Problems solved by technology

However, in the current research, almost no one uses the basic map to allocate evacuation traffic flow

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