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对采用混合可压缩流体方法分析非饱和土一维固结问题的固结方程进行了求解,在得到的解析解的基础上,对影响非饱和土一维固结的因素进行了分析。分析结果表明,在采用混合流体方法计算非饱和土一维固结的孔隙水压力时,所用公式与计算饱和土一维固结的太沙基理论公式基本相同,不同之处在于引入Bishop有效应力系数来体现孔隙气对孔隙水的影响。而在非饱和土孔隙气压的计算公式中除了体现孔隙水对孔隙气的影响参数以外,还有体现孔隙气体的可压缩性对固结影响的参数。在所有影响因素中,影响非饱和土一维固结最重要的因素是孔隙流体的渗流路径。
In this paper, the consolidation equation for the one-dimensional consolidation of unsaturated soils is solved by the method of mixed compressible fluid. Based on the analytical solution obtained, the factors that affect the one-dimensional consolidation of unsaturated soil are analyzed. The results show that the formula of one-dimensional solid solution of saturated soil with one-dimensional solid solution is basically the same when the mixed fluid method is used to calculate the one-dimensional pore-water pressure of unsaturated soil. The difference lies in the introduction of Bishop effective stress Coefficient to reflect the impact of pore gas on pore water. In addition, the calculation formula of pore pressure in unsaturated soils not only reflects the influence parameters of pore water on pore gas, but also shows the influence of the compressibility of pore gas on consolidation. Among all the influencing factors, the most important factor affecting unidimensional consolidation of unsaturated soil is the seepage path of pore fluid.