强侧风作用下桥隧连接段行车仿真与安全性分析

doi:10.13229/j.cnki.jdxbgxb.20220183

Abstract

Abstract:

In order to grasp the impact of strong crosswind on the driving safety of vehicles in the bridge-tunnel connection section， CARSIM is applied to simulate the vehicle dynamics and calibrate the parameters of wind-vehicle-road coupling simulation model. Through the analysis of different combinations of model， vehicle speed， wind speed and wind angle for a total of 120 simulation conditions， the relationship between vehicle lateral deviation distance and reaction time under various conditions is derived. Orthogonal experiments and ANOVA are used to find out The significant factors influencing the lateral stability of the vehicle were identified using orthogonal experiments and ANOVA. The test results show that the factors affecting the driving stability of the car are wind angle， vehicle speed， vehicle type and wind level in descending order； the larger the windward area of the body section and the wider the width of the car， the more obvious the effect of the side wind， and the safety reaction time is only 2.7 s for cars and 2.3 s for SUV under 120 km/h speed， 9-level wind and 90° wind angle open loop. The results of the study provide a reference for the safety evaluation and control strategy design of self-driving vehicles in the side wind area.

Key words: vehicle dynamics, aerodynamics, CARSIM simulation, traffic safety assessment model, strong crosswind in mountainous area, bridge/tunnel connection section

CLC Number:

U495

Bing HUI,Wei LIU,Yu-kun ZHOU,Shu-qi LI. Simulation on driving safety of bridge /tunnel connecting section of expressway under strong crosswind[J].Journal of Jilin University(Engineering and Technology Edition), 2023, 53(8): 2312-2320.

Figures/Tables 10

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参数	轿车	SUV
车长/mm	4501	4653
车宽/mm	1704	1886
车高/mm	1469	1730
轴距/mm	2604	2688
前轮距/mm	1540	1585
质心高度/mm	520	670
簧上质量/kg	1140	1541
迎风面积/m²	5	6.6

水平	车型	车速 /（km·h^-1）	风级	风速 /（m·s^-1）	风向角 /（°）
1	轿车	80	6	13.6	30
2	SUV	100	7	16.9	60
3	—	120	8	20.5	90
4	—	—	9	23.3	120
5	—	—	—	—	150

来源	Ⅲ类平方和	自由度	均方	F统计量	显著性
总计	6411.474	360	—	—	—
修正模型	558.074	12	46.506	404.689	0.000
车型	21.695	1	21.695	188.785	0.000
车速	114.640	2	57.320	498.791	0.000
风级	61.877	3	20.626	179.481	0.000
风向角	359.770	4	89.942	782.665	0.000
误差	39.877	347	0.115	—	—

Simulation on driving safety of bridge /tunnel connecting section of expressway under strong crosswind

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