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以沈丹客专为背景,系统研究了严寒地区山区高速铁路路基防冻胀技术措施,建设期进行了冻胀变形观测,获得了(2014~2015年)全线路基冻胀变形发展情况,分析了冻胀变形发生和发展的规律,观测结果表明:路基冻胀变形是普遍发生的,但小于4mm的冻胀变形点比例为99.52%,较小的监测点所占比较较大,说明通过合理的防冻胀措施冻胀变形是可以控制的。
Taking SHEN Danke as the background, the technical measures of frost heave expansion for high speed railway subgrade in mountainous area are systematically studied. During the construction period, the frost heave deformation observation is carried out. The frost heave deformation of the whole subgrade is obtained from 2014 to 2015, Occurrence and development of the roadbed. The observation results show that the subgrade frost heave deformation is common, but the proportion of frost heave deformation less than 4mm is 99.52%, and the smaller monitoring points account for a larger proportion, indicating that through reasonable frost heaving measures Frost heave deformation can be controlled.