寒区铁路客运专线路基冻胀变形监测方法

Deformation monitoring in subgrade frost heaving associated with passenger line

哈齐铁路客运专线是我国目前纬度最高的高速铁路,大部分路段位于湿地之上,冬季长,气温低,路基冻胀将直接影响高速铁路运行安全。为确保哈齐客运专线安全运营,在建设期对路基进行同步冻胀变形监测。采用水准测量的方法,通过秋、冬、春三季对典型路段路基进行监测,分析冻胀变形可能对铁路运营带来的影响,采取有效措施加以克服,确保运营安全。

So far,Harbin-Qiqihar passenger dedicated line has been a high-speed railway building in the highest latitude area in China,most of which segments are located in wetlands.Due to the relatively longer winter and lower temperature,the safety of operation will be affected directly by the phenomenon of subgrade frost heaving.With the railway being constructed,the deformation monitoring in subgrade frost heaving has to be done in order to ensure the safety of operation.By means of leveling surveying,the subgrade of typical segment is monitored and measured in autumn,winter and spring.The possible negative effects on railway operation caused by subgrade frost heaving are studied,and the effective measures are taken to undo the adverse effect,sequentially ensuring the safety of wailway operation.