川藏施工道路最小圆曲线半径及最大纵坡研究  

Research on the minimum radius and maximum grade of construction road of Sichuan-Tibet Railway

作　　者：陶绍钧[1] TAO Shaojun(China Railway No.Two Engineering Group Co.Ltd,Chengdu 610083,China)

机构地区：[1]中铁二院工程集团有限责任公司,四川成都610083

出　　处：《交通科技与经济》2020年第5期57-62,共6页Technology & Economy in Areas of Communications

摘　　要：山区施工道路建设中,路线的圆曲线最小半径和最大纵坡与工程规模、投资和环保关系密切。若严格执行公路标准,则会出现高填深挖、桥隧工程规模大等情况,势必增大投资和环境破坏;同时,由于设计车辆和适用范围不同,也不能完全照搬农村道路、水利水电、厂矿等规范。以川藏铁路施工道路为研究对象,从车辆转弯和爬坡性能分析的角度对施工车辆的最小转弯半径和最大爬坡度进行分析,提出圆曲线最小半径和最大纵坡建议值。建议值均低于现行公路标准的要求,更能适应川藏铁路沿线复杂地形、地质、气候条件,不仅可以减少高填深挖及对环境的破坏,还可缩短施工道路长度、降低工程投资。In the construction of mountainous road,the minimum radius and maximum vertical slope are closely related to the project scale,investment and environmental protection.If the highway standard is strictly implemented,there will be high filling and deep excavation,large-scale bridge and tunnel projects,which will inevitably increase investment and environmental damage.At the same time,due to the different design vehicles and the scope of application,other specifications such as rural roads,water conservancy and hydropower,factories and mines can not be completely copied.Based on the construction road of Sichuan-Tibet Railway,the paper analyzes the minimum turning radius and maximum climbing slope of the construction vehicle from the angle of vehicle turning and climbing performance analysis,and puts forward a suggestive value of the minimum radius and the maximum grade.The recommended values are lower than the requirements of the current highway standards,and more suitable for the complex terrain,geology and climate conditions along the Sichuan-Tibet railway.It can not only reduce the high fill and deep excavation and damage to the environment,but also shorten the length of the construction road and reduce the project investment.

关 键 词：川藏铁路 施工道路 转弯性能 爬坡性能 最小半径 最大纵坡 高原折减 

分 类 号：U491[交通运输工程—交通运输规划与管理]