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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。
Aiming at the problem of frequent large-scale car accidents in mountain highway sections and relying on the traffic safety guarantee project of Yunnan Luo-Fu Expressway, aiming at the effective control of the speed of large vehicles under the long slope, a “ ”System vibration model, theoretically analyzed the different sections of the deceleration zone on the ride of the car theoretical research, design suitable for the use of the highway deceleration zone, supplemented by road test program optimization, and finally given the deceleration zone arrangement Program. The results show that when the car speed is 60 ~ 70 km / h and the truck speed is 30 ~ 40 km / h, the ride comfort of the decelerating belt trains can not only reduce the driving safety of the car, At the same time, it effectively reduces the accident rate of multiple road accidents and reduces the casualties and economic losses.