哈齐客运专线路基冻胀变形研究

通过对哈齐客运专线路基冻胀变形监测,获得(2012～2013年)路基的冻胀变形发展情况,分析了冻胀变形发生和发展规律。研究结果表明:各监测点冻胀变形随时间发展变化规律基本一致,路基冻胀变形经历了包括冻胀快速发展期、冻胀维持期、冻融循环期和融化回落期4个阶段;路基冻胀变形的发生具有普遍性,但冻胀量较大的监测点所占比例较小,说明其冻胀变形还是可控的。

Study on Frost Heaving Deformation of Subgrade for Harbin-Qiqihar PDL

Through the frost heaving deformation monitoring of subgrade for Harbin-Qiqihar PDL, the data about the deformation development from 2012 to 2013 was obtained, based on which the occurrence and the development rules thereof were analyzed. The study results show that the frost heaving deformation of subgrade has substantially the same development vs. time rules at each monitoring point, which experiences the four stages, including fast growing, maintenance, freeze-thaw cycles and fallout after thawing; the occurrence of subgrade frost heaving deformation is of universality, however, the monitoring points subject to large frost heaving volume take up small proportion, which proves that the frost heaving deformation may be under control.