强风环境下跨海桥梁行车安全评价与管控方法

doi:10.19562/j.chinasae.qcgc.2022.09.017

Abstract

Abstract:

In view of that the traffic capacity of cross-sea bridge under strong wind environment is the key to ensuring the traffic safety and efficiency of bridges， and the existing bridge traffic management mode of adopting speed limit or traffic restriction can not meet the requirements of the development of intelligent transportation in the future， taking van trucks and cars as the research objects， an evaluation and management method of the vehicle driving safety on cross-sea bridge under strong wind environment is proposed in this paper. The interaction of aerodynamic relationship of "wind-vehicle-bridge" and its influence on vehicle crosswind stability are studied and the quantitative co-evaluation on the multi-factors of wind speed， vehicle speed and road surface etc. are conducted by using vehicle dynamic responses under the action of strong wind. Finally， some suggestions on the vehicle driving organization and driving speed control regulation related to driving safety on cross-sea bridge under different conditions are put forward.

Key words: vehicle dynamics, strong wind environment, crosswind stability, cross-sea bridge, driving safety, traffic management

Zhiqun Yuan,Yufeng Liu,Li Lin. Evaluation and Management Method of Vehicle Driving Safety on Cross-Sea Bridge Under Strong Wind Environment[J].Automotive Engineering, 2022, 44(9): 1456-1468.

Figures/Tables 27

References 18

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参数	F_x /N	F_y /N	F_z /N
数值计算	0.372 3	5.005 1	0.695 4
风洞试验	0.359 5	4.568 2	0.643 0
计算误差	3.4%	9.6%	8.1%

参数	轿车		货车
参数	路面	桥面	路面	桥面
C_L	0.493	0.899	0.794	1.018
C_S	1.313	1.033	4.051	4.764

参数	单位	数值
车身宽度	mm	2 100
车身高度	mm	1 480
车身长度	mm	5 050
质心到前轴的距离	mm	1 400
质心到地面的高度	mm	530
前悬刚度	N/m	35 204
前悬阻尼	N·s/m	2 803
后悬刚度	N/m	32 857
后悬阻尼	N·s/m	2 494
车体侧倾惯量	kg·m²	1 012.5
车体俯仰惯量	kg·m²	3 042
车体横摆惯量	kg·m²	3 528
整车质量	kg	1 650

汽车类型	侧偏事故临界风速/（m·s^-1）
汽车类型	干燥路面	潮湿路面	积水路面
轿车	28.5	26.2	22.9
厢式货车	22.8	22.1	20.8

侧风等级	安全车速/（km·h^-1）
	干燥路面		潮湿路面		积水路面
	货车	轿车	货车	轿车	货车	轿车
6~8级	80	90	80	90	80	90
9级	80	90	80	90	50	90
10级	50	90	50	90	40	80
11级	30	80		80		70

Evaluation and Management Method of Vehicle Driving Safety on Cross-Sea Bridge Under Strong Wind Environment

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