冻土的蠕变及蠕变强度

基于试验，本本讨论分析了冻土三轴蠕变规律及温度和围压对冻土蠕变强度的影响，给出了土蠕变及蠕变强度随时间降低的方程式，进而提出了冻土蠕变强度的物型屈服准则。通过改变参数可将冻土的瞬时强度准则与冻土的瞬时强度准则与冻土的蠕变强度准则统一为同一个方程描述。

Creep and Creep Strength of Frozen Soil

Based on tests, this paper has analysed and discussed triaxial creep law of frozen soil andaffection of temperature and confining pressure to creep strengh of frozen soil. The results oftest have shown that:(1) The triaxial creep process is the same uniaxial creep process. If only considering thepreceding two stages of creep proeess,we can describe it with the unified creep fomula: (2) With development of time,the creep strength submits attenuated trend and finallytend towards the long-term strength limit of frozen soil.The proeess can be described by fol-lowing fomula:(3) The creep strength criteria of frozen soil can be given by a parabolic equation.