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研究了考虑起始比降的一维固结问题,获得了初始孔压非均布条件下考虑起始比降的一维固结解答,并与已有文献解答进行了对比,讨论了考虑起始比降后土体的一维固结特性。计算分析表明,当初始孔压降小于起始比降时,渗流并不会在整个土层中瞬间发生,而是逐渐向下发展的,起始比降越大,渗流边界移动速度越慢;固结结束时,土体中的孔隙水压力并不会完全消散,且起始比降越大,残余孔隙水压力越大。与不考虑起始比降不同,均质地基平均固结度按沉降定义和按孔压定义是不同的,随着起始比降的增大,按沉降定义的固结度随之增大,而按孔压定义的固结度则随之减小。
The one-dimensional consolidation problem considering initial ratio drop is studied. The one-dimensional consolidation solution considering the initial ratio drop under initial pore pressure non-uniform distribution is obtained and compared with the existing literature solutions. One - dimensional consolidation characteristics of soils after initial ratio reduction. The results show that when the initial pressure drop is less than the initial ratio, the seepage will not occur instantaneously in the whole soil, but it will gradually develop downward. The larger the initial ratio, the slower the percolation boundary. At the end of consolidation, the pore water pressure in the soil does not completely dissipate, and the larger the initial gradient, the greater the residual pore water pressure. Different from the initial ratio, the average degree of consolidation of homogeneous soil is different according to the definition of settlement and the definition of pore pressure. As the initial ratio decreases, the degree of consolidation according to settlement increases, The degree of consolidation according to pore pressure decreases.