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基于Fredlund等提出的非饱和土一维固结理论,采用差分求积法分析了复杂的初始孔隙气压及水压分布,不同的边界条件对非饱和土固结的影响。通过一个简单初始和边界条件下的特殊算例与文献中已取得的结果进行比较,验证了该结果的正确性。作者采用的计算方法可以有效避免解析解中复杂的数学推导,而且相对于解析解仅限于特殊的初始和边界条件,这种分析方法适用性更加广泛。通过在算例中考虑不同的边界和初始条件,发现不同的初始孔隙压力分布和不同的边界条件在非饱和土的固结过程中有很大的影响。
Based on the one-dimensional consolidation theory of unsaturated soil proposed by Fredlund et al., The differential initial quadrature method was used to analyze the influence of complex initial pore pressure and pressure distribution and different boundary conditions on the consolidation of unsaturated soils. The correctness of the result is verified by comparing the results obtained from the literature with the special cases under a simple initial and boundary condition. The computational method adopted by the author can effectively avoid complicated mathematical derivation in analytic solutions and is more applicable to analytic solutions than special initial and boundary conditions. By considering different boundaries and initial conditions in the example, it is found that different initial pore pressure distributions and different boundary conditions have a great influence on the consolidation process of unsaturated soils.