Experimental Investigation on Triaxial Frost Heaving Stress-Strain Relationship of Saturated Clay
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摘要: 为探讨土体在冻结过程中的力学性能,对饱和粘土在不同约束条件下的冻胀应变与冻胀应力之间的关系进行了室内试验研究,并提出了一种三轴冻胀应力-应变关系.结果表明:三轴冻胀应力-应变关系呈对数曲线变化;测力环刚度、初始轴向压力及围压对冻胀应力和冻胀应变有显著影响.
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关键词:
- 三轴冻胀应力-应变关系 /
- 冻胀应力 /
- 寒区隧道 /
- 饱和粘土 /
- 对数曲线
Abstract: To probe into the mechanical performances of soil during the freezing,the relationship between frost heaving strain and stress of saturated clay frozen under different constrains was investigated experimentally,and triaxial frost heaving stress-strain relationship was presented.The research results show that the triaxial frost heaving stress-strain curve can be fitted with a logarithmic curve,and test-force-ring stiffnes,initial axial pressure and confining pressure have a great effect on the frost heaving stress and strain of frozen saturated clay. -
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