山区高速公路避险车道设计与分析

The Design and Analyze of Emergency Escape Ramp in Mountain Highways

避险车道可分为上坡式、平坡式、下坡式以及砂堆式。推荐采用"温度综合法"确定避险车道的位置及间距,将制动器每升高50℃的距离定为两避险车道之间的距离;综合考虑制动床滚动阻力系数、驶入速度及制动长度等因素确定避险车道的坡度及坡长。结合实体工程进行避险车道设计,有效降低了交通事故伤亡率,保证了驾驶员的生命财产安全。

The style of emergency escape ramp can be divided into uphill, flat sloping, downhill and sand pile type. The paper recommended ＂ temperature synthesis method＂ to determine the position and spacing of the emergency escape ramp, when the temperature of brake is increased by 50 ℃, then an emergency escape ramps should be designed ; The rolling resistance coefficient of brake bed, speed, braking distance and other factors were taken into the consideration when designing the slope and slope length of the emergency escape ramp. Combining entity project to design emergency escape ramp, the results show that it can effectively reducing the casualty rates of traffic accident and ensure the lives and property safety of the drivers.