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将考虑起始水力梯度的非达西渗流模型引入砂井地基固结理论。在得到显示解答的条件下,分析了起始水力梯度、井径比和初始孔压对砂井地基固结性状的影响。结果表明,因为起始水力梯度的存在砂井地基固结结束后会有未能消散的残余孔压剩余,使得固结度不能达到100%。起始水力梯度和井径比越大,则残余孔压越大,最终固结度越小。初始孔压不影响残余孔压的大小,但是增加初始孔压能削弱起始水力梯度和井径比对最终固结度的影响。
The non-Darcy flow model considering the initial hydraulic gradient is introduced into the consolidation theory of sand well foundation. The effect of initial hydraulic gradient, borehole diameter ratio and initial pore pressure on the consolidation behavior of sand well foundation is analyzed under the condition of display solution. The results show that because of the initial hydraulic gradient, there is residual residual pore pressure which can not be dissipated after the consolidation of sand foundation is completed, so that the degree of consolidation can not reach 100%. The greater the initial hydraulic gradient and well ratio, the larger the residual pore pressure and the lower the final degree of consolidation. The initial pore pressure does not affect the size of the residual pore pressure, but increasing the initial pore pressure can impair the effect of the initial hydraulic gradient and the ratio of borehole diameter to the final degree of consolidation.