地下连续墙-桩-筏板基础共同作用的计算方法——基于Mindlin和Geddes的解法  

Analysis Method for Interaction in Diaphragm-Pile-Raft Foundation System——Based on Mindlin & Geddes' Stress Solutions

作　　者：盛健[1] 

机构地区：[1]中船第九设计研究院工程有限公司,上海200063

出　　处：《地下空间与工程学报》2009年第A02期1507-1511,共5页Chinese Journal of Underground Space and Engineering

摘　　要：以Mindlin和Geddes的应力解及其已在桩基中的应用为基础,提出了计算地下连续墙侧摩阻力和端阻力在地基土中所产生的应力的方法。根据应力叠加原理和分层总和法,即可在采用筏板基础、桩基以及将基坑开挖阶段用作围护结构的地下连续墙直接作为地下空间外墙的地下结构体系中,求得地下连续墙和桩基在地基土中的沉降,并由沉降在地下连续墙-桩-筏板基础中的变形协调为条件,提出了地下空间结构中地下连续墙-桩-筏板基础共同作用的分析方法。其中,对筏板基础采用厚板理论计算其内力的方法进行了探讨。Based on Mindlin ＆ Geddes＇ stress solutions and their applications in the pile foundation, the solution methods of stress induced by the friction and tip resistance of a diaphragm in the soil is presented. Therefore the settlements of the diaphragms and piles can be obtained based on the superposition principle and layered summation method in the raft foundation, piles and diaphragms-system, where the diaphragms are directly used as the exterior walls of a basement after they are utilized as the retaining structure during excavation. According to the consistent deformation condition of the system, the method to analyze the interaction in the diaphragm - pile - raft foundation system is put forward. The thick plate theory is used to calculate the inner forces of raft foundation.

关 键 词：MINDLIN解 GEDDES解 沉降 地下连续墙 桩 筏板基础 

分 类 号：TU47[建筑科学—结构工程]