【摘要】 首次将e-log10σ′和e-log10kv关系引入了成层地基一维非线性固结问题的研究之中,建立了能综合考虑荷载、土的成层性和自重等因素影响的固结控制方程.基于半解析法,采用Fortran语言编制了相应的计算程序NAODCLS,并利用该程序分析了变荷载下成层地基一维非线性固结的性状.结果表明,在成层地基非线性固结过程中,超孔压消散速率和沉降发展速率是不一致的;与将土层自重应力取为常值的作法相比,当考虑自重应力沿深度实际分布时,地基固结加快,而沉降量则增大.更多还原

【Abstract】 The well-known empirical e -log10σ′ and e-log10kv relations were introduced f or the first time into the study on one dimensional nonlinear consolidation of l ayered soils, and the corresponding governing equation was then presented, in wh ich the influences such as time dependent loading, layered soils and actual o verburden pressure were taken into consideration. Based on the semi-analytical solution, the relevant program NAODCLS was developed by Fortran programming. By using it, the behavior of one dimensional nonlinear consolidation of layered soi ls under time-dependent loading was discussed. It was concluded that the rate o f excess pore water pressure dissipation is different from that of settlement du ring the nonlinear consolidation of layered soils; and that the actual overburde n pressure profile could result in faster consolidation and larger settlement than ones by conventional treatment which assumes that the overburde n pressure profile is uniform.更多还原