摘要
阐述了重型货车行驶在长大下坡路段的制动失效机理以及美国开发的坡度严重度分级系统原理(GSRS),提出应用GSRS模型原理对避险车道进行规划选址研究。使用纵向加速度模拟汽车在纵坡路段上沿路线方向行驶的运动行为,求得重型货车在长大下坡段的运行速度,根据制动器温升模型计算得制动器的温升曲线,即可确定避险车道的规划选址位置,并依托贵州仁赤高速公路进行了实例计算。
This paper elaborates the braking failure mechanism of heavy truck running on long - steep downgrades slope sections and the principle of Grade Severity Rating system developed by FHWA. Then proposes using GSRS to research on planning and site selection of Truck Escape Ramps. Using longitudinal acceleration simulates vehicle＇s movement behavior driving along the route direction of longitudinal slope sections , and obtain the running speed of heavy truck. According to the calculation of brake temperature model can obtain the brake temperature rise curve, and utilizes the temperature rise curve can locate the site of TER. Relying on the Ren - Chi expressway in GuiZhou, use the model to calculate the specific long- steep downgrades slope sections.
出处
《北方交通》
2015年第3期60-64,共5页
Northern Communications
基金
贵州省交通运输厅科技项目(GZSGLJKYWT-2013-01)
关键词
长大下坡
避险车道选址
运行速度
制动器温升
Long and steep downgrades
Selection method of truck escape ramps
Operating speed
of brake drum＇ s temperature Rising
