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通过固结不排水三轴试验,对黄河三角洲粉质土稳态强度进行研究:首先设计了3组干密度分别是1.55,1.65,1.75g/cm3的粉土样,分析了初始干密度对稳态线的影响,论证了稳态线的唯一性;然后又设计了5组不同黏粒含量分别是10%,14%,17%,24%,30%的粉质土,定量分析了黄河三角洲粉质土中的黏粒含量对稳态强度线的影响,得出了黏粒含量为17%的粉质土的稳态强度最大的结论,并分析了产生这种现象的原因,最终建立了稳态强度随黏粒含量变化的关系函数。
Steady-state strength of silty soil in the Yellow River Delta was studied by consolidation undrained triaxial test. Firstly, three groups of silt samples with dry density of 1.55, 1.65 and 1.75 g / cm3 were designed. The initial dry density was analyzed. And the uniqueness of the steady-state line is demonstrated. Then, five groups of silty soil with different clay content of 10%, 14%, 17%, 24% and 30% are designed and quantitative analysis of the Yellow River Delta The effect of clay content in silty soil on the steady-state strength line is analyzed. The conclusion is drawn that the steady-state strength of silty soil with clay content is 17%, and the reason for this phenomenon is analyzed. Finally, Steady state strength as a function of clay content.