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考虑大货车横向稳定性的平曲线设计控制指标

DOI: 10.3969/j.issn.1674-0696.2015.03.08, PP. 36-41

Keywords: 道路工程,平曲线设计,Trucksim仿真,货车稳定性,roadengineering,horizontalcurvedesign,Trucksimsimulation,truckstability

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Abstract:

:?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。

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