Method for evaluating traffic state in connection position of entrances and exits of urban underground parking lot system

Abstract

The invention discloses a method for evaluating the traffic state in the connection position of entrances and exits of an urban underground parking lot system. The method includes the steps of firstly, analyzing the traffic condition of the connection position of the entrances and exits of the underground parking lot system and an urban main road; secondly, establishing an evaluation index of the entrances and exits of the underground parking lot system, and calling a VISSIM program module to conduct traffic analogue simulation calculation according to indexes including the number and widths of the entrances and exits of the underground parking lot system, the length of ramps of the entrances and exits, the length and the lane width of an underground motor vehicle annular corridor, the underground parking berth number, the underground vehicle average speed, the underground parking time distribution and the like; thirdly, obtaining traffic situation evaluation data of all the entrances and exits of the underground parking lot system at different morning-evening peak hours, and conducting comparative analysis to obtain the change rules of the traffic state in the connection position of the entrances and exits. By means of the method, the design reference foundation is provided for reasonably designing and refitting the underground parking lot system and the entrances and exits of the underground parking lot system and improving the service level of the entrances and exits.

Description

technical field [0001] The invention relates to a traffic state evaluation method, in particular to a traffic state evaluation method at an entrance and exit connection of an urban underground parking system, and belongs to the field of data processing. Background technique [0002] In recent years, with the rapid growth of the number of cars, many urban roads have gradually formed bottlenecks, especially the bottleneck between the entrance and exit of the underground parking lot and the main road, especially the unreasonable layout of the entrance and exit of the underground parking lot, which has become an urgent need to solve at this stage The problem. The underground parking entrance is the key to the internal and external circulation of the parking building, and it is also the transition stage for the mutual conversion between static traffic and dynamic traffic. Through these entrances and exits, parked vehicles pass between the urban roads and the parking lot. Unreas...

AI Technical Summary

Problems solved by technology

With low car accessibility, it is impossible to obtain high utilization rate and economic effect of parking facilities

[0003] At present, the main problems of the entrances and exits of urban underground parking lots are: the entrances and exits of a single underground parking lot with the same land use in the same area are independent of each other and lack systematic connectivity; the number and location of the entrances and exits are unreasonable; The constant point of traffic jams, which l

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