哈大客专路基冻胀变形的观测与分析  

Observation and Analysis on Frost Heaving Deformation at Subgrade of Haerbin-Dalian PDL

作　　者：余雷[1] 

机构地区：[1]铁道部经济规划研究院,北京100038

出　　处：《路基工程》2013年第3期54-58,63,共6页Subgrade Engineering

摘　　要：通过哈大客专路基冻胀变形的观测,从全线路基冻胀量的大小和分布、不同结构类型路基冻胀量的差异和发生概率,以及冻胀量沿深度的变化和组成等方面,进行了阐述;通过冻胀原因和控制性因素分析,指出哈大客专路基冻胀变形部位主要集中在基床范围,得出现有路基结构形式下,冻结深度不是控制路基冻胀量的主因和控制基床冻胀变形,特别是基床表层冻胀变形是解决路基冻胀问题的关键等结论;并对寒区高速铁路路基结构形式进行了探讨,为寒区高速铁路路基冻胀病害的防治提供参考。This paper, through observation of frost heaving deformation at the subgrade of Haerbin-Dalian Passenger Dedicated Line, described the amount and distribution between frost heaving amounts at different types of subgrade, the of frost heaving along the line, the difference probability of occurrence, and the change of frost heaving amount with depth and composition. After analysis of the causes and controlling factors of the frost heaving, it is pointed out that the deformation was taken place mainly in the range of the bed surrounding, and the conclusion is that with current subgrade structures, freezing depth is not the main factor controlling subgrade frost heaving and the control of bed frost heaving, especially that at surface layer of bed, is the key solving the this trouble. In addition, the structural forms of subgrade of high-speed railways in cold area were discussed, which may be referred for the purpose of control of frost heaving disease there.

关 键 词：客运专线 寒冷地区 季节性冻土 路基冻胀 变形观测 基床结构 

分 类 号：U216.417[交通运输工程—道路与铁道工程]