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考虑初始孔压非均布条件和涂抹区渗透系数变化的砂井地基固结问题,推导了基于等应变假设的固结控制方程,得到一般解。然后根据实际工程中可能出现的情况建立了5种渗透系数变化模式,同时考虑初始孔压非均布条件的4种分布,在一般解基础上得到这20个问题相应的固结解,现有等应变条件下的砂井地基固结解是本文的特例。通过计算研究这两种因素共同作用下砂井地基固结性状的情况,结果表明:固结最快的是初始孔压为倒三角形分布、涂抹区渗透系数变化为模式2的情况;固结最慢的是初始孔压为正三角形分布、涂抹区渗透系数变化为模式4的情况。
Taking into account the initial pore pressure non-uniform distribution and the change of permeability coefficient of the coating area, the consolidation control equation based on the assumption of constant strain is deduced. The general solution is obtained. Then according to the actual project may establish five kinds of permeability coefficient variation mode, taking into account the initial distribution of pore pressure non-uniform distribution of four kinds of distribution, on the basis of the general solution to these 20 problems corresponding consolidation solution, the existing Equivalent strain under the sand foundation consolidation solution is a special case of this article. The results show that the initial consolidation pore pressure is inverted triangular distribution and the permeability coefficient of the coating zone changes to the pattern 2. The consolidation is the most important Slow is the initial pore pressure is a triangle distribution, the coating zone permeability coefficient changes to the mode 4 situation.