关键词: 淤泥质土, 剪切蠕变, Burgers本构模型, 经验型模型

Abstract: The shear rheological behaviors of Huangshi mucky soil by indoor test are studied. The test results that the shear creep deformation of Huangshi mucky soil is similar to linear features. The creep behaviors can be seen under some levels of Shear stress. The shear stress is higher; the shear creep deformation is more obvious.Under the high stress, the viscosity of soil increase, and the liquidity of soil decline. The shear module has power function decline in relations with time. The coefficient of viscosity has no large change with the change of shear power. According to the experimental results that linear regression analysis can make sure the creep coefficient and improve the accuracy, the creep model and experience Burgers’ model can both rightly describe the shear creep law of muddy soil in this area. In comparison, it is good to make use of experience model to describe the character of soft soil non-linear shear creep.

Key words: mucky soil, shearing creep test, Burgers constitutive model, empirical model