A Method for Determining the Minimum Safety Radius of the Horizontal Curve of Two-lane Highway in Plateau Area

A technology of safety radius and determination method, which is applied to roads, roads, buildings, etc., can solve the problem of insufficient minimum radius correction and achieve the effect of simple method

Active Publication Date: 2022-03-08
SOUTHEAST UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the specific physiological and psychological conditions of the driver on the plateau, the correction of the minimum radius is not enough

Method used

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  • A Method for Determining the Minimum Safety Radius of the Horizontal Curve of Two-lane Highway in Plateau Area
  • A Method for Determining the Minimum Safety Radius of the Horizontal Curve of Two-lane Highway in Plateau Area
  • A Method for Determining the Minimum Safety Radius of the Horizontal Curve of Two-lane Highway in Plateau Area

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Embodiment 1

[0035] A typical two-lane road in the plateau area—National Highway 318 Linzhi City-Sejila Mountain Pass section was selected for field driving experiments. The experimental road section is two-way two-lane, with a lane width of 3.5m and a design speed of 40km / h. The starting elevation of the selected road section is 2979m, and the ending elevation is 4720m. The experimenters selected 10 young drivers who entered the plateau area for the first time (plateau acclimatization period ≤ 10 days) as experimental samples, including 7 males and 3 females, with an average age of 25.4 years and an average driving experience of 4.7 years; the two-lane road is It means that the width of the lane is 3.5m, and the whole road contains many flat curve sections. Such as figure 1 As shown, the calculation method of the minimum safety radius of the flat curve section of the two-lane highway in the plateau area mainly includes the following steps:

[0036] Step (1): Collect the vehicle speed, h...

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Abstract

The invention discloses a method for determining the minimum safe radius of a flat curve suitable for two-lane highways in plateau areas, comprising the following steps: (1) collecting the vehicle speed, Heart rate and EEG data; (2) Perform sample entropy processing on the driver’s EEG and heart rate indicators, and extract the characteristic indicators of EEG and heart rate indicators; (3) Perform principal component analysis on the heart rate sample entropy and EEG signal sample entropy , to obtain the comprehensive evaluation index CISE of the driver's psychological load; (4) Construct the regression model of the comprehensive evaluation index CISE and the lateral force acceleration of the flat curve section in different altitude intervals; (5) Determine the comprehensive evaluation index through the Lagrangian median theorem Finally, the minimum safety radius threshold of two-lane highways in different altitude intervals in plateau areas is proposed. The invention improves the driving safety of highways in plateau areas.

Description

technical field [0001] The invention relates to the technical field of road safety, in particular to a method for determining the minimum safe radius of a flat curve of a two-lane road in a plateau area. Background technique [0002] At present, the roads in plateau areas are mostly low-grade two-lane roads. Due to the influence of complex terrain conditions and engineering economic conditions, there are many sections of two-lane highways in the plateau area that are surrounded by mountains and valleys, and along streams and cliffs, which leads to a higher frequency of low-linear index sections of two-lane highways on the plateau. However, road sections with low linearity indicators are often accident-prone road sections. Statistics show that major traffic accidents on plateaus in my country basically occur on two-lane roads. Since the plateau low-pressure hypoxic environment has a certain negative impact on the psychological and physiological conditions of drivers, the saf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C1/00
CPCE01C1/00E01C1/002E01C1/007
Inventor 陈飞余瀚林胡飞薄雾张平
Owner SOUTHEAST UNIV
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