刚性桩复合地基-筏板基础体系内力、沉降计算方法

提出一种分析刚性桩复合地基 -筏板基础相互作用体系内力和变形的实用方法。该方法将筏板基础划分为Mindlin板单元 ,桩 -土体系的支撑刚度利用Boussinnesq解和Mindlin解及有限压缩层模型确定 ,对垫层则近似用分布弹簧模拟。同时还给出一种考虑无限刚性上部结构的算法。对所建议计算模型的各个方面及其参数取值进行了讨论。编程计算的结果与三维有限元及工程实测结果吻合较好 ,表明所建议方法有较好应用前景

A practical method for the analysis of rigid pile composite foundation-raft system

A method is proposed for the settlement and inner force analysis of rigid pile composite foundation raft system. In this method the raft is modeled with Mindlin plate element, and the soil pile cushion system is modeled through semi analytical methods. Besides, an algorithm is proposed to consider the rigidity of the super structure. The methods and the choice of its parameters are discussed in detail. Numerical examples are presented to compare the calculated results with field measurements and with those obtained by truly 3 dimensional FEM calculations. The satisfactory agreements approve the applicability of the proposed method.