Method for determining alignment consistency characteristic parameters of tunnel entrances and exits under dynamic driving environment

A technology for tunnel entrances and exits and driving environment, which is applied in the field of determining the linear consistency characteristic parameters of tunnel entrances and exits. problems, to achieve the effect of reducing the incidence of safety accidents, improving accuracy, and ensuring safe and smooth passage.

Active Publication Date: 2015-07-22
SHANDONG JIAOTONG UNIV
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Problems solved by technology

[0006] To sum up, no matter the published patents or the published research results, there is a lack of research on the headway model of the tunnel entrance and exit, and then the linear consistency is only mechanically stipulated as a fixed t

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  • Method for determining alignment consistency characteristic parameters of tunnel entrances and exits under dynamic driving environment
  • Method for determining alignment consistency characteristic parameters of tunnel entrances and exits under dynamic driving environment
  • Method for determining alignment consistency characteristic parameters of tunnel entrances and exits under dynamic driving environment

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Embodiment Construction

[0022] The present invention will be further described below. The method for determining the linear consistency characteristic parameters of the tunnel entrance and exit under the dynamic driving environment includes the following steps:

[0023] 1. It is obviously inappropriate to use a fixed parameter for the linear consistency characteristic parameters of the tunnel entrances and exits corresponding to different tunnels. Therefore, the present invention divides the tunnel entrances and exits connecting section and the tunnel entrances and exits into several sections on average with the entrances and exits as the origin. The distance between each segment of the segment and the origin is x n …0, the distances from the origin of each section inside the tunnel entrance and exit are 0…x n .

[0024] 2. Use the illuminance measuring instrument to measure the change of the illuminance before and after the averagely divided sections in both day and night environments, and record ...

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Abstract

The invention discloses a method for determining alignment consistency characteristic parameters of tunnel entrances and exits under a dynamic driving environment. The method includes the steps: 1, averagely dividing a tunnel entrance-exit connection section and a tunnel entrance-exit interior into a plurality of zones by taking an entrance or an exit as an origin; 2, measuring illuminance changes of each zone in daytime and at night; 3, calculating a time headway T (L) between two vehicles; 4, calculating average passage time t, 5, selecting a maximum tmax; 6, calculating an initial alignment consistency time T''; 7, calculating final alignment consistency characteristic parameters. By the method for determining the alignment consistency characteristic parameters of the tunnel entrances and exits under the dynamic driving environment, a 'people-vehicle-road-environment' traffic circulation system is effectively harmonized, tunnel entrance-exit alignment consistency time is determined based on a safety headway model, driving alignment requirements are met on the basis of consideration of visual characteristic of drivers, and accordingly driving safety is guaranteed, precision of construction requirements and tunnel design standards can be improved, safety, smoothness and comfort in passing through of tunnels can be guaranteed for the drivers, and accident rate is decreased.

Description

technical field [0001] The invention relates to a method for determining the linear consistency characteristic parameters of tunnel entrances and exits. Background technique [0002] With the rapid growth of expressway mileage in recent years, especially the continuous extension of expressway to mountainous areas, the number of expressway tunnels is increasing day by day due to the limitation of terrain. The special environment where tunnels are connected to other road units leads to a high incidence of tunnel entrance and exit accidents. The alignment consistency of tunnel entrances and exits can ensure the safety and driving comfort of driving transitions, and it also has certain theoretical and practical value for the adaptation of transitional environments to gradual changes. [0003] Through searching, it is found that the relevant domestic regulations have special requirements for the alignment consistency of tunnel entrances and exits, while tunnel-related patents are...

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Application Information

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IPC IPC(8): G08G1/01G08G1/052
CPCG08G1/0137G08G1/052
Inventor 白翰丁红亮韩竹邵娟王立超白婧荣冯启龙岳海亮王顺超蔺庆海
Owner SHANDONG JIAOTONG UNIV
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