| 连续长大下坡路段大货车运行速度预测模型 |
| |
| 引用本文： | 廖军洪,邵春福,邬洪波,王芳.连续长大下坡路段大货车运行速度预测模型[J].北京理工大学学报,2012(S1):118-121. |
| |
| 作者姓名： | 廖军洪 邵春福 邬洪波 王芳 |
| |
| 作者单位： | 中国交通运输部公路科学研究院, 北京 100088;北京交通大学 城市交通复杂系统理论与技术教育部重点实验室, 北京 100044;北京交通大学 城市交通复杂系统理论与技术教育部重点实验室, 北京 100044;中国交通运输部公路科学研究院, 北京 100088;中国交通运输部公路科学研究院, 北京 100088 |
| |
| 基金项目： | 国家科技支撑计划项目(2009BAG13A02);国家教育部高等学校博士学科点专项科研基金资助课题(20090009110011) |
| |
| 摘 要： | 针对既有线形一致性评价方法未考虑连续长大下坡道路特性的问题,利用10个高速公路连续长大下坡路段的95个特征断面运行速度观测数据,分析了大货车运行速度与坡长、平均纵坡和曲率的关系,建立了大货车运行速度与车辆驶离连续长大下坡起点的距离、车辆至连续长大下坡起点的平均纵坡的关系模型,提出了基于大货车运行速度的连续长大下坡路段线形一致性评价方法. 研究结果表明,提出的模型反映了连续长大下坡路段大货车的运行速度特征,可为高速公路连续长大下坡路段路线安全设计和线形一致性分析提供理论支撑.
|
| 关 键 词： | 连续长大下坡 运行速度 预测模型 安全评价 |
| 收稿时间： | 2012/9/28 0:00:00 |
Operating Speed Prediction Model for Trucks on Long Steep Downgrades |
| |
| LIAO Jun-hong,SHAO Chun-fu,WU Hong-bo and WANG Fang.Operating Speed Prediction Model for Trucks on Long Steep Downgrades[J].Journal of Beijing Institute of Technology(Natural Science Edition),2012(S1):118-121. |
| |
| Authors: | LIAO Jun-hong SHAO Chun-fu WU Hong-bo and WANG Fang |
| |
| Institution: | Research Institute of Highway, Ministry of Transport, Beijing 100088, China;MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China;MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China;Research Institute of Highway, Ministry of Transport, Beijing 100088, China;Research Institute of Highway, Ministry of Transport, Beijing 100088, China |
| |
| Abstract: | As road characteristics of long steep downgrades (LSD) hasn't been considered in existing alignment consistency assessment methods, a new method of highway alignment consistency assessment for LSD is presented using operating speed of trucks. With operating speed data of trucks collected at ninety-five sites selected from ten typical LSD in mountain freeways, the relationship between operating speed and the cumulative length, the average grade and the curvature of the downgrade was analyzed. Then the operating speed prediction model for trucks was developed. The distance and the average grade to the beginning of the downgrade were main geometric indicators considered in the model. And the traffic safety assessment technique of the alignment of LSD was put forward. It is proved that the operating characteristics of trucks on LSD have been reflected in the proposed model. So it provides theoretical support for the safety design and the consistency analysis of the alignment of LSD in mountain freeways. |
| |
| Keywords: | long steep downgrades operating speed prediction model safety assessment |
|
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
| 点击此处可从《北京理工大学学报》下载免费的PDF全文 |
|
