In north cold area pavement is usually distressed because of heave factor, and the base may reduce water heave function and increase pavement service life.
北方寒冷地区路面损坏主要是由于冻胀等因素引起的，这种基层可以减小水分的冻胀作用，增加路面使用寿命。
It is essential to consider the mechanical strength of soil in analyzing the base heave caused by the confined ground water, otherwise, the calculated result is unreasonable to some degree.
而对于因承压水引起的坑底土体隆起变形，若不考虑土体的强度特性，计算结果是偏于安全的。
It is essential to consider the mechanical strength of soil in analyzing the base heave caused by the confined ground water, otherwise, the calculated result is unreasonable to some degree.
而对于因承压水引起的坑底土体隆起变形，若不考虑土体的强度特性，计算结果是偏于安全的。
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