摘要
CFG桩复合地基是新兴的地基处理技术,已广泛应用于工程建设。CFG桩复合地基属于刚性桩复合地基,与天然地基相比,能较好地加固地基,降低地基沉降量,提高地基的承载力。本文主要通过大型有限元软件ABAQUS/CAE,建立了筏板、褥垫层、桩和土层的有限元模型,针对CFG桩单桩理论研究不适用于群桩理论,通过分析扩桩前和扩桩后筏板、褥垫层、桩和土层的受力状态,分析研究群桩的复合地基工作机理,具有重要的实际应用意义。
CFG pile composite foundation is a new foundation treatment technology, which has been widely used in engineering construction. The CFG pile composite foundation is a rigid pile composite foundation. Compared with the natural foundation, it can reinforce the foundation better, reduce the settlement of the foundation, and increase the bearing capacity of the foundation. This paper mainly uses the large-scale finite element software ABAQUS/CAE to establish the finite element model of the raft, cushion, pile and soil layer. Aiming at the CFG pile single pile theory research is not applicable to the pile group theory, by analyzing the expansion and expansion of the pile It has important practical application significance to analyze and study the working mechanism of the composite foundation of pile group on the stress state of the raft, cushion, pile and soil layer behind the pile.
作者
王长山
张志谦
李牧桥
刘人杰
WANG Changshan;ZHANG Zhiqian;LI Muqiao;LIU Renjie(State Nuclear Electronic Power Planning Design&Research Institute Co.,Ltd.,Beijing 100095,China;School of Civil Engineering,Yantai University,Yantai 264005,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S02期1551-1556,共6页
Building Structure
关键词
群桩
扩桩
受力特点
group piles
expanded piles
force characteristics
