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重载交通区连续下坡坡度危险度分级研究

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Keywords: 道路工程,重载交通,理论分析,危险度等级,连续下坡,典型车型,安全保障设施

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Abstract:

?为了给重载交通区连续下坡路段设置安全保障措施提供理论指导,对此类路段的车辆运行特性及制动鼓温度变化特性等影响因素进行了研究。采用实地调研与理论分析相结合的方法,界定了连续下坡的属性,确定了重载交通区的典型车型,运用运行速度预测仿真软件和制动鼓温度预测模型,分析确定了一定限速条件下,对应不同纵坡坡度,制动鼓温度达到某一限值时车辆行驶的最小距离。研究结果表明:在重载交通区连续下坡路段,可将坡度危险度划分为4个等级,不同危险度等级对应不同坡长,并应采取相应的安全保障措施。

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