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通过TSS10三轴流变仪,对不同初始固结度吹填土蠕变特性进行了研究。试验结果表明,固结度对吹填土蠕变变形影响明显。固结度越小,蠕变变形越明显;增大固结度,能够在一定程度上减小蠕变变形。蠕变变形黏滞系数与固结度和有效固结应力大致呈线性单调增函数关系。蠕变破坏强度随固结度的增大依次增大,但都小于瞬时强度。不同固结度蠕变应力-应变等时曲线均可用双曲线函数进行拟合。
Through the TSS10 triaxial rheometer, the creep characteristics of different initial consolidation degree dredger fillings were studied. The test results show that the degree of consolidation has a significant effect on the creep deformation of dredger fill. The smaller the degree of consolidation, the more obvious the creep deformation; increasing the degree of consolidation, to a certain extent, reduce the creep deformation. Creep deformation viscosity coefficient and consolidation degree and effective consolidation stress roughly linear monotonically increasing function. The creep rupture strength increases with the increase of the degree of consolidation, but both are less than the instantaneous strength. Different degrees of consolidation creep stress - strain isochronal curves can be used hyperbola function fitting.