CFG桩复合地基承载力工程应用分析  

Analysis of bearing capacity of the composite foundation of CFG

作　　者：高均昭[1] 宋扬[2] 袁凌云 

机构地区：[1]许昌学院城市与环境学院,许昌461000 [2]安阳工学院建筑工程系,安阳455000 [3]贵州省建筑工程勘察院,贵阳550003

出　　处：《水文地质工程地质》2007年第4期31-35,共5页Hydrogeology & Engineering Geology

基　　金：河南省教育厅基础与前沿技术研究项目(2007560014)

摘　　要：CFG桩复合地基作为一种新型的软弱地基处理技术,能够较好地发挥桩土共同作用,目前已被广泛应用于地基处理工程中。本文结合贵州省首例CFG桩复合地基工程,采用ANSYS软件建立复合地基模型,并考虑褥垫层影响,把计算结果与荷载试验结果进行了对比分析,得出CFG桩复合地基桩土共同作用效果明显,但目前设计桩承担荷载的比例过高的结论。据此对CFG桩复合地基的改进方向提出了建议。Composite foundation of CFG is a kind of rigid pile. As a new type of technique for improving the soft foundation, it has already been applied in foundation treatment engineering. In this paper, taking the first engineering of CFG pile composite foundation in Guizhou Province as an example and using FEM analysis program （ANSYS） while considering the effect of bed course. The CFG pile composite foundation is simulated. According to the comparison between the theoretical results and the measured ones, some engineering characters and new approaches to the CFG pile composite foundation are proposed. The results of the study provide references to the wide use for composite foundation of CFG in Guizhou province.

关 键 词：CFG桩 复合地基 有限元 承载力 静载试验 刚性桩 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]