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沿用已有的制样方法,在统一了制样过程中冰、水比例及冰颗粒尺寸的基础上,开展了高含冰(水)量粉质砂土的单轴抗压强度系统性测试.结果表明:高含冰(水)量冻土的单轴抗压强度随应变率的增加而非线性增大;随温度升高而减小,减小趋势与总含水量有关.随含水量的增加,强度先是非线性增大,然后逐渐趋于重塑冰的强度,这有别于早期类似研究的结果.同时,也对试样中加入冰颗粒以保证试样高含冰(水)量的制备方法合理性产生了质疑.
Based on the existing sample preparation methods, the uniaxial compressive strength of the high ice-bearing (sandy) silty sand was systematically tested based on the unification of the ice, water ratio and ice particle size during the process of sample preparation. Uniaxial compressive strength of frozen soil with high iced (water) content increases nonlinearly with the increase of strain rate, decreases with decreasing temperature, and decreases with the increase of total water content.With the increase of water content, Is non-linear increase, and then gradually tends to remodeling the strength of ice, which is different from the results of similar studies in the earlier period.At the same time, the method of adding ice particles to the sample to ensure high ice content (water) Questioned.