Study on Mechanical Characteristics of Frost Heaving of Artificially Frozen Soil

The impact of the cold-side temperature and moisture to frost heave were obtained by studying frost heaving test in open system. Frost heave ratio increased linearly with the decrease of cold-side temperature and moisture. Frost heave force increased with the decrease of cold-side temperature and increase of moisture. In addition, the soil physical properties variation laws was gained during freezing in the test, like moisture and dry density. By analysising the test data of frost heave ratio and frost heave force, the relationship between frost heave ratio and frost heave force were acquired. The results had important practical value and theoretical significance to the freezing shaft sinking and artificially freezing techniques applied in urban underground engineering.