冲击荷载作用下饱和软粘土的一些性状

SOME CHARACTERISTICS OF SATURATED SOFT CLAY UNDER IMPACT LOADING

在已有对饱和软粘土再固结性状进行研究的基础上,重点讨论饱和软粘土在偏压应力状态下的再固结性状、土性及塑性指数对再固结变形的影响、冲击荷载作用下超固结土的孔压和变形性状、残余孔压与剪应变之间的相互关系及其变化机理、扰动固结问题以及偏压应力状态下地基土沉降和强度计算等问题。

Based on the study on reconsolidation properties of saturated soft clay under impact loading before,the problems are furthermore studied,such as the residual deformation,residual pore pressure and reconsolidation characteristics of overconsolidated clay,and the reconsolidation deformation of normally consolidated saturated soft clay under deviated state of stress. The effect of plasticity index of soil on the coefficient of reconsolidation volume compressibility is analyzed. The relationship between residual pore water pressure and residual strain and its mechanism,and the disturbance consolidation problem are also discussed. Besides,the calculation methods of both the settlement and the shear strength of soft clay foundation under deviated stress state are suggested.