中文摘要：

以弹性力学理论中的里兹变分法为基础,以幂函数为试探函数,通过相互作用系数的有关理论将桩体复合地基中桩土共同作用的核心问题进行研究,经过一系列理论推导,得出线弹性条件下桩体复合地基的沉降计算公式.通过模型试验与理论计算结果的对比,验证了理论计算式的可行性.

英文摘要：

In this paper, with the Ritz variational method in the theory of elasticity as the basis, power function as trial function, and the theory of interaction coefficient, the core problem in the pile-soil interaction in pile composite foundation was investigated,and through a series of the- oretical derivation the calculation formula was obtained for settlement in the condition of linear e- lasticity. The comparison between the model test and theoretical calculation results verified the feasibility of the theoretical calculation.