重载交通区连续下坡坡度危险度分级研究  

Study on Heavy Traffic Area Risk Levels Classification in Continuous Downhill Slope Section

作　　者：雷斌[1,2] 许金良[1] 辛田 雷剑[4] 

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]西安市地下铁道有限责任公司,陕西西安710016 [3]西安公路研究院,陕西西安710065 [4]长安大学电子与控制工程学院,陕西西安710064

出　　处：《中国公路学报》2013年第6期53-58,共6页China Journal of Highway and Transport

基　　金：交通运输部西部交通建设科技项目(2009 318 000 102);中央高校基本科研业务费专项资金项目(2013G1211003;CHD2011ZD021;2013G1321038)

摘　　要：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。In order to provide theoretical guidance for continuous downhill slope section security measures in heavy traffic area, the operating characteristics of the vehicle and brake drum temperature change characteristics were analyzed. With the combination of spot investigation and theoretical analysis, the definition of continuous downhill and the typical vehicles in heavy traffic area were determined. Using speed prediction simulation software and brake drum temperature prediction model, minimum distance between vehicles when brake drum temperature reached a limiting value, corresponding to different longitudinal slopes under certain limiting conditions. The results show that the risk levels in continuous downhill slope can be classified into four, different risk levels are corresponding to different lengths of slope, and different security measures should be taken for each level.

关 键 词：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 

分 类 号：U417.9[交通运输工程—道路与铁道工程]