高速公路上坡路段载重车辆运行速度特性

许金良; 雷斌; 李诺

高速公路上坡路段载重车辆运行速度特性

许金良^1,,
雷斌^{1, 2},
李诺³

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.
中国民航工程咨询公司，北京 100621

基金项目:

交通运输部西部交通建设科技项目 2011318362810

中央高校基本科研业务费专项资金项目 CHD2011ZD021

中央高校基本科研业务费专项资金项目 2013G1211003

详细信息

作者简介:
许金良(1966-), 男, 山东曹县人, 长安大学教授, 工学博士, 从事道路总体工程与交通安全研究

中图分类号: U412.366
计量
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- 被引次数: 0
出版历程
- 收稿日期: 2013-07-18
- 刊出日期: 2013-12-25

Operating speed characteristics of heavy vehicle on expressway uphill section

XU Jin-liang^1
,,
LEI Bin^{1, 2},
LI Nuo³

1.
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China
2.
Xi'an Metro Co., Ltd., Ltd., Xi'an 710016
3.
Civil Aviation Engineering Consulting Company of China, Beijing 100621, China

More Information

Author Bio:
XUJin-liang(1966-), male, professor, PhD, +86-29-82334441, gl15@chd.edu.cn

摘要

摘要: 对内蒙古地区高速公路的交通组成、载重车辆功率、载质量、质量功率比进行了统计分析, 确定了高速公路上坡路段的主导车型。依据修正的速度预测模型, 分别绘制了不同坡度(1%~6%)、坡长、载质量(30、40、50、55t)、质量功率比(80、120、160、200kg·kW^-1)、初始入坡速度(0、20、40、60km·h^-1) 下的主导车型运行速度曲线, 并从汽车动力学角度研究了曲线变化的原因。分析结果表明: 内蒙古地区运煤高速公路主导车型为福田欧曼ETX9系重卡; 载重车辆在一定坡道上行驶, 当达到平衡速度之后, 速度不再随坡长的增加而降低; 坡度越大, 速度降低越快, 最后达到的平衡速度越小; 车辆载质量越大, 速度降低越快; 质量功率比越小, 车辆爬坡性能越好; 初始速度越高, 车辆达到平衡速度所行驶的距离越长。
- 高速公路 /
- 载重车辆 /
- 运行速度 /
- 主导车型 /
- 质量功率比
Abstract: The traffic composition, heavy vehicle power, load mass and mass-to-power ratio of expressway in Inner Mongolia were analyzed, and the typical vehicle on expressway uphill section was determined. Based on the corrected speed prediction model, the operating speed curves of typical vehicle under different slope gradients (1%-6%), slope lengths, load masses (30, 40, 50, 55 t), mass-to-power ratios (80, 120, 160, 200 kg·kW^-1) and initial speeds into slope (0, 20, 40, 60 km·h^-1) were drawn, and the reasons of curve changes from vehicle dynamics perspective were studied. Analysis result shows that Foton Auman ETX9 heavy truck is the typical vehicle on the expressway for coal transportation in Inner Mongolia. When heavy vehicle runs on a certain slope, the vehicle speed will not decrease with the increase of slope length after reaching balancing speed. The bigger the slope gradient is, the faster the vehicle speed drops, the lower the final balancing speed is. The bigger the load mass is, the faster the vehicle speed drops. The smaller the mass-to-power ratio is, the better the vehicle climbing performance is. The higher the initial speed is, the longer the distance for vehicle to reach balancing speed is.
- expressway /
- heavy vehicle /
- operating speed /
- typical vehicle /
- mass-to-power ratio

HTML全文

图 1 调查路段车型组成

Figure 1. Composition of vehicles on investigated section

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图 2 车辆功率统计

Figure 2. Statistics of vehicle powers

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图 3 车辆载质量统计

Figure 3. Statistics of vehicle load masses

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图 4 质量功率比统计

Figure 4. Statistics of mass-to-power ratios

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图 5 主导车型

Figure 5. Typical vehicle

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图 6 预测模型主要操作界面

Figure 6. Main interface of prediction model

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图 7 坡长与速度的关系

Figure 7. Relationship between slope length and speed

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图 8 坡度与速度的关系

Figure 8. Relationship between slope gradient and speed

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图 9 载质量与速度的关系

Figure 9. Relationship between load mass and speed

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图 10 质量功率比与速度的关系

Figure 10. Relationship between mass-to-power ratio and speed

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图 11 初始速度与运行速度的关系

Figure 11. Relationship between initial speed and operating speed

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表 1 样本统计

Table 1. Sample statistics

下载: 导出CSV

表 2 主导车型的性能参数

Table 2. Performance parameters of typical vehicle

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