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本文在砂井地基轴对称等应变方程的基础上,推导了真空预压荷载下的轴对称孔压、固结度解析解,该解析解利用函数模拟孔压在地表的初始条件,以考虑真空荷载的施加过程,解决了以往真空预压解孔压边界条件和初始条件在地表处的矛盾。同时也可考虑涂抹和井阻等因素,更加接近实际工程情况。通过例题与其他解答及数值解进行了验证、比较,证明了该解答的适用性,可进一步用于实际工程的设计计算。
Based on the axisymmetric equivalent strain equations of sand well foundation, the analytical solution of axial symmetry pore pressure and consolidation degree under vacuum preload is deduced. The analytical solution uses the function to simulate the initial conditions of pore pressure on the surface to consider the vacuum The application process of the load solves the contradiction between the boundary conditions and the initial conditions of the vacuum prepressure pore pressure on the ground surface. At the same time can also consider painting and well resistance and other factors, closer to the actual project situation. Through examples and other solutions and numerical solutions were verified, compared to prove the applicability of the solution can be further used in the actual engineering design and calculation.