考虑固结和流变的群桩的积分方程解法

利用半空间内部和表面作用圆形载荷时的Biot固结基本解 ,得出了粘弹性饱和土中群桩在时间域内的第二类Fredholm积分方程。通过Laplace变换方法对上述积分方程进行简化 ,对所得的积分方程进行数值求解并进行相应的逆变换即可得群桩的轴力、位移以及桩侧摩阻力随时间的变化情况

The integral equation method to solve pile group problem considering the consolidation and rheology of soil

By using the fundamental solutions of circular load applied in the interior of the half space or on the surface of the half space, the second kinds of Fredholm integral equations of pile group in saturated viscoelastic soil are established in the paper. The integral equations can be simplified by means of Laplace transforms methods. By the the numerical solution of the integral equations and the corresponding inverse integral transforms, the displacement, axial force and the shear stress of the piles groups are obtained.