【摘要】 为了研究动力作用下饱和地基的动力固结问题,根据Biot平面动力固结方程,运用积分变换和矩阵传递的方法,建立了周期荷载作用下单层和多层地基的二维Biot动力固结的函数表达式.根据下边界为不透水基岩的边界条件,获得了地基表面作用周期荷载时任意层内任意点应力(包括孔压)、位移(包括流体流量)的一般积分形式解.并根据算例,研究了在周期荷载作用下地基的位移、应力、孔压变化的一般规律.算例表明,由于地基中波的反射、干涉,在水平向和竖直向各个物理量会出现多个极值的现象,远异于静力固结.更多还原

【Abstract】 Basing on Biot’s dynamic consolidation equations, the using method of integral transformation and matrix transformation, the two-dimensional consolidation of multiplayer subsoils was studied. Then, the general integral solutions of stress (including pore pressure) and displacement (including fluid flow) in any layer were obtained under harmonic vibration load according to impermeable boundary condition. Finally, numerical examples were given. The numerical results indicated that several peak values of the displacement、 total stress and excess pore pressure will appear in the vertical and horizontal direction for the reflection and interference of the waves in soils, which is much different from the case of static consolidation.更多还原