半透水边界的散体材料桩复合地基孔隙水压力变化规律

Change Rule of Excess Pore Pressure in Composite Foundation of Granular Columns with Boundaries

针对半透水边界的散体材料桩复合地基孔隙水压力变化规律,建立了数学模型,给出了半透水边界的散体材料桩复合地基孔隙水压力解析解.根据解析解结果,编制相应的计算程序,绘制了孔隙水压力变化曲线图.研究显示,复合地基的顶、底面的透水性能参数Rv1和Rv2均对孔隙水压力变化产生影响,Rv1和Rv2值越大,孔隙水压力下降会越快.

In this paper, the mathematical modeling is founded, and the excess pore pressure in soft clay ground improved by granular columns considering boundary permeability is studied and the corresponding analytical solution is developed. Based on the solution and relevant computations, the influence of boundary permeability on the consolidation process is investigated and the relevant results are prepared in graph forms. It is shown that the permeability parameters Rv1 and Rv2 have much influence on the change of excess pore pressure. The greater the value of Rv1 and Rv2, the greater the decline of excess pore pressure in the composite foundationis.