柔性桩复合地基沉降的Mindlin解法

Calculation of composite foundation settlement by using Mindlin solution

通过对复合地基在荷载作用下的工作机理研究 ,将复合地基沉降量计算分为两部分。一部分为复合地基加固区的压缩量 ;另一部分为下卧层的压缩量。前者采用基于弹性理论的复合模量法 ;后者则根据半无限弹性体中受集中力作用时的 Mindlin竖向应力解求出附加应力 。

Based on the working mechanism of composite foundation, the settlement of composite foundation is divided into two parts: the compressive deformation of the reinforced area and that of the soil under the reinforced area. Calculation of the complex modulus of the former is based on the theory of elasticity. The vertical additional stress in the soil under the reinforced area is calculated with the Mindlin solution in the semi-infinite elastic space,and then the settlement of the soil under the reinforced area can be derived by using the layerwise summation method.