群桩复合地基工作特性的有限元、无限元耦合分析  

Semi-analytical Numerical Analysis on Working Behaviour of Group Pile Composite Foundation

作　　者：皮菊华[1] 

机构地区：[1]湖北省鄂州大学建工系,鄂州436000

出　　处：《国外建材科技》2007年第1期74-77,共4页Science and Technology of Overseas Building Materials

摘　　要：以九桩CFG桩复合地基为例,采用桩和近域土体用有限元分析,桩土之间加设接触面单元来模拟桩土之间的相对沉降,远域土体采用无限单元来模拟,混凝土单元和无限单元采用弹性分析,近域土体采用Duncan-zhang模型(E-U模型)来模拟九桩群桩复合地基的工作机理进行了系统的分析。In this thesis, the finite element analysis is adopted to imitate the piles and the near soil;Between the pile and the soil,a joint element is designed to imitate the relative settlement while the infinite element is used to imitate the distant soil. We use elastic analysis method for concret elements and infinite elements, E-U model for near soil. Use a example for analysis,the result shows that the method adopted in the thesis is reasonable.

关 键 词：复合地基 有限元 无限元 耦合分析 接触面单元 

分 类 号：TU473.1[建筑科学—结构工程]