Research on Longitudinal Slope and Slope Length Limit of Mountain-Expressway Based on Heavy Vehicles＇ Braking Ability

doi:10.3969/j.issn.1674-0696.2009.02.29

Journal of Chongqing Jiaotong University(Natural Science) ›› 2009, Vol. 28 ›› Issue (2): 287-289.DOI: 10.3969/j.issn.1674-0696.2009.02.29

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Research on Longitudinal Slope and Slope Length Limit of Mountain-Expressway Based on Heavy Vehicles＇ Braking Ability

SU Bo, FANG Shou-en, WANG Jun-hua

Key Lab of Road ＆ Traffic Engineering of Ministry of Education, Tongji University, Shanghai 200092, China

Received:2008-10-22 Revised:2008-11-15 Online:2009-04-15 Published:2015-04-15

基于大货车制动性能的山区高速公路坡度坡长限制研究

苏波,方守恩,王俊骅

同济大学道路与交通工程教育部重点实验室,上海200092

作者简介:苏波(1984—),男,四川仁寿人,硕士研究生,研究方向为道路交通安全。
基金资助:
??十一五国家科技支撑计划项目(2007BAK35B03)

Abstract

Abstract: The GSRS＇s temperature prediction model of the brake drum is modified by the brake drum＇s temperature data measured in the field test on mountain-expressway. Based on the modified model, the relationship between the temperature of large trucks＇ brake drum and longitudinal slope, slope length, vehicle weight, vehicle speed is deduced. With this rela-tionship, that the longitudinal slope and slope length limit guaranteeing the brake drum＇s temperature are no higher than its safety-temperature is figured out. This limit will lower the probability of brake failure. So, it can be a reference for safer design of mountain-expressway＇s longitudinal profile.

Key words: mountain-expressway , large trucks , brake drum＇s temperature , longitudinal slope and slope length limit ;

摘要： 利用山区高速公路实地制动鼓测温试验的数据,对美国GSRS中的制动鼓温度预测模型进行修正,并以此模型为基础,推导大货车下坡时,其制动鼓温度与坡度、坡长、车重、车速的关系,进而算出坡度坡长限制,保证大货车制动鼓温度不超过其安全温度,以期降低大货车在山区高速公路制动失效的几率,为更安全的山区高速公路纵断面设计提供参考。

关键词: 山区高速公路, 大货车, 制动鼓温度, 坡度坡长限制

CLC Number:

U412.3

SU Bo, FANG Shou-en, WANG Jun-hua. Research on Longitudinal Slope and Slope Length Limit of Mountain-Expressway Based on Heavy Vehicles＇ Braking Ability[J]. Journal of Chongqing Jiaotong University(Natural Science), 2009, 28(2): 287-289.

苏波,方守恩,王俊骅. 基于大货车制动性能的山区高速公路坡度坡长限制研究[J]. 重庆交通大学学报（自然科学版）, 2009, 28(2): 287-289.

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Research on Longitudinal Slope and Slope Length Limit of Mountain-Expressway Based on Heavy Vehicles＇ Braking Ability

基于大货车制动性能的山区高速公路坡度坡长限制研究

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Research on Longitudinal Slope and Slope Length Limit of Mountain-Expressway Based on Heavy Vehicles＇ Braking Ability

基于大货车制动性能的山区高速公路 坡度坡长限制研究

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基于大货车制动性能的山区高速公路坡度坡长限制研究