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A network extraction method of urban evacuation arterial roads for supersaturation control

A network extraction and network technology, applied in traffic control systems, traffic control systems of road vehicles, instruments, etc., can solve the problems of lack of quantitative calculation and analysis, scientific and rational influence of trunk road network, etc., and achieve scientific improvement and reliability, reduce time and improve efficiency

Inactive Publication Date: 2016-08-24
SOUTHEAST UNIV
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Problems solved by technology

However, at this stage, the extraction of urban emergency evacuation arterial road network is generally judged based on the experience of traffic managers, and there is a lack of relevant quantitative calculation and analysis, which affects the scientificity and rationality of the extracted arterial road network to a certain extent.

Method used

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  • A network extraction method of urban evacuation arterial roads for supersaturation control
  • A network extraction method of urban evacuation arterial roads for supersaturation control
  • A network extraction method of urban evacuation arterial roads for supersaturation control

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Embodiment Construction

[0031] The following is the technical roadmap of this scheme in conjunction with the attached chart ( figure 1 ), the specific embodiment of the present invention is described in further detail:

[0032]1. Introduction to network extraction of urban evacuation arterial roads (see figure 2 )

[0033] Urban evacuation arterial road network extraction is to extract the important road network that bears a large amount of emergency evacuation traffic in the city under the state of urban emergency evacuation from the conventional road network. By setting the total mileage constraint on the urban evacuation arterial road network, comparing and analyzing all the alternatives that meet the total mileage constraint, and finally identifying and extracting the main points in the urban traffic network by comparing the saturation of the alternative evacuation network index. The evacuation arterial road network creates favorable conditions for the management of urban emergency evacuation ...

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Abstract

The invention discloses an extracting method for a supersaturation-controlled city evacuation trunk road network. Compared with simplex qualitative analysis of an existing common network trunk road experience extraction method, the extracting method has the advantages of being capable of providing an operable and theoretically-supported method by combining qualitative analysis and quantitative calculation. According to the extracting method, first, a city basic road network structure and a basic traffic characteristic attribute are obtained by means of infrastructure material lookup, field investigation and the like, wherein road segments and intersections are numbered in a unified mode; second, a starting point / terminal point of emergency evacuation and evacuation requirements between the starting point and the terminal point are determined according to a set city emergency evacuation plan; finally, the city evacuation network supersaturation degree is defined, and the city evacuation trunk road network is extracted with the minimum city evacuation supersaturation degree as the target and the total mileage of network roads as a control parameter.

Description

technical field [0001] The invention relates to a method for extracting a traffic arterial road network, in particular to a method for extracting an urban evacuation arterial road network in an emergency evacuation situation. Background technique [0002] Urban emergency evacuation events (fires, leakage of chemical and toxic substances, terrorist attacks, etc.) will cause people in the disaster-affected area to adopt evacuation behaviors. A large number of evacuees will evacuate through higher-level road sections in order to safely, efficiently and quickly leave the dangerous area. A large number of evacuation needs in a short period of time will lead to the deterioration of urban traffic operation status, or even paralysis. Therefore, reasonable traffic organization and guidance on urban evacuation trunk roads can effectively improve the evacuation efficiency of emergency events and reduce casualties and property losses. However, at present, the extraction of urban emerge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/00
Inventor 任刚吴建波邢淋丽华璟怡姚梦佳张旻沁
Owner SOUTHEAST UNIV
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