低掺量水泥改良土在路基填料中的应用日益广泛,通过低掺量水泥改良后的粘性土的动三轴试验分析研究,研究了水泥土动强度、变形特性和振动液化性能及其影响因素,通过试验应力-应变分析,得出了Hardin-Drnevich动力本构模型实验参数.实验研究还表明应力水平对动应力应变具有显著影响;水泥改良土低掺量配比设计中,试验研究结果表明在3.0%～5.0%之间存在一个合理低掺量;水泥改善了土体的抗振动液化性能,围压σ3c=200kPa时,3.0%和5.0%掺量的水泥土动态孔隙水压力发生的临界应变值分别为3.3×10-2和5.4×10-2.图11,表7,参22. The application of low-volume cement-modified soil in roadbed filler is more and more extensive. By the analysis of dynamic triaxial test of clay with low content of cement, the dynamic strength, deformation characteristics and vibration liquefaction of cement soil and their influencing factors , The experimental parameters of the Hardin-Drnevich dynamic constitutive model are obtained through the experimental stress-strain analysis. The experimental studies also show that the stress level has a significant effect on the dynamic stress-strain. In the design of cement modified soil with low dosage, the experimental results show that There is a reasonable low content between 3.0% and 5.0%. Cement can improve the anti-vibration liquefaction performance of soil. When the confining pressure σ3c = 200kPa, the dynamic pore water pressure of 3.0% and 5.0% The strain values ​​were 3.3 × 10 -2 and 5.4 × 10 -2, respectively. Figure 11, Table 7, Reference 22.