| 引用本文: | 廖军洪,邵春福,邬洪波,王芳.考虑制动器温度的连续长大下坡纵坡设计方法[J].哈尔滨工业大学学报,2014,46(12):114.DOI:10.11918/j.issn.0367-6234.2014.12.019 |
| LIAO Junhong,SHAO Chunfu,WU Hongbo,WANG Fang.Design methods for long steep downgrades considering of brake temperature of truck[J].Journal of Harbin Institute of Technology,2014,46(12):114.DOI:10.11918/j.issn.0367-6234.2014.12.019 |
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| 摘要: |
| 为提升连续长大下坡路段安全水平,研究一种基于制动器温度的纵坡设计方法．以7个典型连续长大下坡路段为研究对象,分析了下坡速度、车辆总质量对特定连续长大下坡路段货车制动器温度的影响．并以车辆到达连续长大下坡终点的制动器温度、制动器温度达到200 ℃和260 ℃时距连续长大下坡起点的距离为特征值,分析了采用等效平均纵坡单一坡度和设置缓坡两种展线形式对货车制动器温度的影响,提出了连续长大下坡路段区段划分量化标准和纵坡设计建议．研究表明:从降低货车制动器温度角度考虑,连续长大下坡路段应尽可能采用单一坡度展线,相邻坡段采用不同纵坡坡度时坡差不宜过大,特别是下部区段． |
| 关键词: 连续长大下坡 制动器温度 纵坡 坡差 区段划分 |
| DOI：10.11918/j.issn.0367-6234.2014.12.019 |
| 分类号:U491 |
| 基金项目:国家重点基础研究发展计划项目(2012CB725403). |
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| Design methods for long steep downgrades considering of brake temperature of truck |
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LIAO Junhong1,2, SHAO Chunfu1, WU Hongbo2, WANG Fang2
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(1.MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology(Beijing Jiaotong University), 100044 Beijing, China; 2. Research Center of Traffic Safety, Research Institute of Highway, MOT, 100088 Beijing, China)
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| Abstract: |
| To promote the safety level of long steep downgrades(LSD), profile design methods for LSD considering of the brake temperature of truck were studied. Seven typical LSD with different length and average grade percentage were selected. Then the influence of operating speed and gross weight on the brake temperature was analyzed. Furthermore, three characteristic values, i.e. the brake temperature of trucks at the end of the LSD, the distance to the beginning of the LSD when brake temperature up to 200 ℃ and 260 ℃ were used to analyze the influence of two different profile design alternatives, one is that unique longitudinal grade is used throughout the whole LSD, another is that different grade percentages are used in different segments, e.g. a steep grade is preceded by a gentle slope. The quantified section classification criterion was presented, and some recommendations were provided. The research shows that from the aspect of reducing the brake temperature of truck, unique grade percentage is recommended. If different grade percentages were used, the difference between any two adjacent segments should be controlled in a small range. |
| Key words: long steep downgrades(LSD) brake temperature longitudinal grade difference of grade percentages section classification |
