双层地基─维固结理论与应用

本文研究了双层地基一维固结问题，给出了荷载随时间任意变化及起始孔压沿深度任意分布情况下双层地基一维固结解答，讨论了双层地基一维固结特性，并为双层地基平均固结度的实际计算提供了图表。与均质地基不同，双层地基平均固结度按沉降定义和按平均孔压定义是有区别的。土的固结系数并不是决定双层地基固结速率的唯一指标。土的压缩性对双层地基固结有重要影响，土越硬，固结越快。

Theory of One Dimensional Consolidation of Double-Layered Ground and its Applications

Ageneral analytical solution is given to the problem of one dimensional consolidation for adouble-layered ground with arbitrary distribution of initial pore water pressure and casual variation of surface load with time. Based on the solution, the consolidation behaviour of the ground is discussedand some diagrams are prepared for practical use. It is shown that, unlike a homogeneous ground, theaverage degree of consolidation of a double-layered ground defined by settlement is different from theone defined by pore pressure, and the consolidation coefficient is no longer the sole parameter of soilgoverning the behaviour of consolidation. The stiffness of soil layer plays an important role in the rate ofconsolidation. The harder the soil layers, the greater the rate of consolidation of a double-layeredground.