本文着重讨论在粘土层中由于次固结所产生的附加结构强度。内容包括两方面,一是分析拟似超固结粘土的屈服压力的机理,并通过实验结果说明越出初始沉积曲线的现象是拟似超固结粘土的本质行为。二是将拟似超固结粘土和超固结粘土的应力-应变-强度特性加以比较,从而说明由时间效应产生的拟似超固结特性和由载荷效应产生的超固结特性之间存在本质的区别。 This article focuses on the additional structural strength that results from secondary consolidation in the clay layer. The content includes two aspects. One is to analyze the mechanism of the yield stress of the pseudo-consolidated clay, and the experimental results show that the phenomenon of the initial sedimentation curve is similar to the essential behavior of the over-consolidated clay. The second is to compare the stress-strain-strength characteristics of the pseudo-consolidated clay and the ultra-consolidated clay. This shows that there exists between the pseudo-consolidation characteristics produced by the time effect and the over-consolidation characteristics produced by the loading effect. The essential difference.