考虑大货车横向稳定性的平曲线设计控制指标  

Control Index of Horizontal Curve Design Considering Truck's Lateral Stability

作　　者：张驰[1] 华贵龙[1] 张敏[2] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]长安大学公路学院交通工程研究所,陕西西安710064

出　　处：《重庆交通大学学报（自然科学版）》2015年第3期36-41,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：教育部博士点基金新教师项目(20120205120013);交通运输部应用基础项目(2014319812170);陕西省自然科学基金项目(2012JQ7001);长江学者和创新团队发展计划资助项目(IRT1050);中央高校基本科研业务费专项资金项目(2013G2211005&CHD2011JC048)

摘　　要：为研究驾驶员行为和道路线形指标对大货车横向稳定性的影响,选择六轴半挂车为典型车型,采用Trucksim动力学仿真软件建立车辆动力学闭环仿真模型,以侧向加速度作为大货车横向失稳风险评价指标。基于统计学的理论,运用MATLAB回归建立大货车侧向加速度预测模型,得到了不同设计速度条件下典型车型的极限最小转向半径值。研究结果表明:采用多自由度大货车模型,考虑横向滑移条件计算得到的平曲线极限最小半径比我国标准所规定的平曲线极限最小半径在各级设计速度条件下均大10%左右。研究成果量化了驾驶员行为和道路线形指标对大货车横向稳定性的影响,并对平曲线设计控制提出了建议指标,对今后道路安全设计具有参考价值。In order to study the effects of driving behavior and alignment index on the truck＇s lateral stability,six-axle semi-trailer was selected as the typical vehicle model,thus a closed-loop vehicle dynamic model was established by Trucksim.Lateral acceleration was used as the index for risk evaluation.Based on statistical theory,the lateral acceleration regression prediction model was established by MATLAB.The circular curve＇s limit minimum steering radii of typical vehicle model was proposed under varied design speeds.The results show that the horizontal curve＇s limit minimum radius adopting multi degree truck model which considered lateral sliding conditions,were about 10% larger than the radius adopting traditional rigid truck model under various design speeds.The results quantify the effects of driving behavior and alignment index on the truck＇s lateral stability.The advised index for horizontal curve design control was proposed and the result provides a good reference for road safety design.

关 键 词：道路工程 平曲线设计 Trucksim仿真 货车稳定性 

分 类 号：U412.34[交通运输工程—道路与铁道工程]