高速公路减速带对汽车平顺性的影响研究  

Research on the effect of highway hump on automobile ride

作　　者：王剑波[1,2] 肖润谋[1] 周维新[1] 陈斌[2] 

机构地区：[1]长安大学汽车学院,西安710064 [2]四川交通职业技术学院,成都611130

出　　处：《安全与环境学报》2011年第1期180-183,共4页Journal of Safety and Environment

基　　金：云南省交通科技项目(罗富附188)

摘　　要：针对山区高速公路长纵坡路段大型车事故多发的问题,依托云南罗富高速公路交通安全保障项目,围绕对大型车辆下长坡时有效控制车速的方案,建立了"人体一车身一车轮"系统振动模型,从理论上分析了不同断面减速带对汽车平顺性影响的理论研究,设计了适合高速公路使用特点的减速带,并辅以道路试验进行方案优化,最后给出了减速带布置方案。结果表明,轿车车速为60～70 km/h,货车车速为30～40 km/h时,减速带列汽车平顺性的影响既在乘员可承受范围内,也不会降低汽车的行驶安全性,同时有效降低了事故多发路段的事故率,减少了人员伤亡和经济损失。The present paper is aimed at introducing the research results of the given authors on the effect of highway hump on the successful car-riding in accordance with the particular mountainous situation in Yunnan. As the harsh fact is, a lot more traffic accidents and car-crash along the tortuous, multi-bend long-lasting downhill slope high-plateau regions, which has motivated the given research group to launch an attack at the Luo-fu-Highway safety renovation project （Yunnan）. The whole project has been focused on the plan of large vehicle control under the effective tolerable speed when running on the long downhill slopes. In proceeding with the research, we have first of all established an integrated ＂human-body, car-body and carwheels＂ system vibration model while making efforts in exploring the influence of different fracture surfaces of hump on the car-driving theoretically and designing the special hump characteristic of expressway application. In accordance with the design features, we have produced the samples and conducted a series of road tests on the Luo-fu- Highway of Yunnan, so as to optimize the experimental model. And we have gradually improved on the system and the plan for hump layout, so as to bring the target of large vehicles＇ speed control into practical effect and remarkably increase the safety of long downhill stretch driving. Practical application proves that on the condition that the ordinary cars were running at a speed of 60 - 70 km/h, and the heavy vehicles were running at a speed of 30 - 40 km/h and 60 - 70 km/h, it is expected to keep the effect of vibration on the vehicle within the tolerance range without lowering the vehicle-driving safety. At the same time, the accident frequency reduction in the accidentprone sections helps naturally to reduce the human casualties and economic losses, resulting in great improvement of the operational safety of such mountainous roads.

关 键 词：公路运输 山区高速公路 长大纵坡 减速带 平顺性 

分 类 号：U491.3[交通运输工程—交通运输规划与管理]