铁路汽车运输便道设计关键参数研究

Research on Key Parameters of Automobile Transportation Pavement in Railway Design

本文基于现阶段汽车运输便道的设计思路及原则,筛选了汽车运输便道设计的主要参数,并对主要参数进行判断是否为关键参数。并调研了近期三个铁路项目的实施与设计对比,分析了汽车运输便道设计中关键参数的选取。结论表明,目前汽车运输便道纵坡最大坡度设计为10%,较实施阶段纵坡偏小,建议适当提高纵坡最大坡度为12%;单/双车道的选择应根据运输总量来计算,并考虑汽车运输便道对社会人员和车辆通行的因素;建议平原、丘陵地区采用泥结碎石路面;复杂山区纵坡大于9%的地段,采用混凝土路面。

Based on the design ideas and principles of the current automobile transportation pavement,this paper screened the main parameters of the automobile transportation pavement design,and judged whether each parameter was a key parameter.The comparison of the implementation and design of three recent railway projects is also investigated,and the selection of key parameters in the design of the pavement for automobile transportation is analyzed.The conclusion shows that the current maximum gradient of the longitudinal slope of the pavement for automobile transportation is designed to be 10%,which is smaller than the longitudinal slope of the implementation stage.It is recommended to appropriately increase the maximum gradient of the longitudinal slope to 12%;Considering the factors that vehicles transport access roads have on the passage of social personnel and vehicles;it is recommended to use mud-bonded gravel roads in plain and hilly areas;concrete roads are used in areas with a longitudinal slope of more than 9%in complex mountainous areas.