【摘要】 基于Kelvin黏弹性地基模型,研究了半透水边界饱和成层黏弹性地基在循环荷载作用下的一维固结问题.利用Laplace变换,得到了问题在变换域内的通解.通过数值Laplace逆变换,获得了黏弹性成层饱水地基在变荷载下的有效应力及固结曲线图.结果表明,在变荷载下黏弹性地基的固结速率慢于弹性地基,其有效应力呈振荡增长;地基的上部垫层和下卧土层的透水性能对固结速率具有较大的影响.更多还原

【Abstract】 The layered Kelvin visco-elastic ground model and the method of Laplace transform were applied to solve the one-dimensional consolidation problem of layered and saturated visco-elastic ground with impeded boundaries under cyclic loading. With the numerical inversion of Laplace transform, the curves of the effective stress and the consolidation of the ground under arbitrary loading were drawn. The solution shows that the consolidation of visco-elastic ground lags that of elastic soils. The development of effective stress is a vibrant process under cyclic loading. The permeability of the impeded layers has important influence on the consolidation rate.更多还原