Stress analysis of frost heave for precast concrete panel lining trapezoidal cross-section channel

In order to explore forces problem of frost damage forms of precast concrete panels lined canals in cold areas, the damage mechanism was studied based on the field observation and experiments. On this basis, with a reasonable assumption combined with the basic theory of mechanics, the lining structure by the frost heaving damage mechanics model was developed, formula of the maximum internal stress of the lining channel bottom board was developed. The maximum frost force was determined in accordance with the relevant specifications or experimental maximum freezing power, which could solve the internal stresses of the precast concrete panels. Three judgment criterions on the frost heaving damage of the structure in engineering practice were developed. The study provides references to the design of precast concrete panel lined trapezoidal cross-section channel in the cold areas.