山区公路分离式断面最大坡长限制分析  

Analysis of the Maximal Grade Length Limitation for Separate Section of Mountain Highway

作　　者：慕慧[1] 杨少伟[1] 

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

出　　处：《郑州大学学报（工学版）》2005年第4期72-76,共5页Journal of Zhengzhou University（Engineering Science）

摘　　要：从汽车行驶理论入手,以解放CA141载重车为标准车型,对汽车的动力性及车辆在道路上的受力情况、运动方程进行分析,并充分考虑汽车在上下坡所受到的诸如空气阻力、海拔高度及车辆载荷等各种影响因素,探讨了山区公路最大坡长限制的确定方法.以分析结果为基础,提出我国《公路工程技术标准》应适当放宽最大坡长限制的建议,同时给出了山区公路最大坡长限制的修改建议值(并通过试验验证了分析的正确性),以供设计人员在设计过程中参考.According to the operational theories of vehicle, taking truck, Jiefang CA141, as standard car, with analysis of vehicle tractive performance of automobile and motive equation of vehicle in the road, this paper discusses the determination of the maximal grade line limit for mountain highways after adequately considering such factors as air resistance acting on car, elevation and vehicle load, and finally puts forward the maximal grade line limitation in current Technical Standard of Highway Engineering should be properly enlarged based on the result of the analysis, the paper,at the same time,offers designers the proposed limitation of the maximal grade line in mountain highway for designers＇ use, the correctiveness of which has been proved through tests.

关 键 词：公路 分离式断面 坡长限制 汽车动力性 运行速度 纵断面设计 

分 类 号：U412.33[交通运输工程—道路与铁道工程]