不同桩体刚度对复合地基的影响  

INFLUENCE OF DIFFERENT COLUMN RIGIDITY ON COMPOSITE FOUNDATION

作　　者：巨玉文[1] 白晓红[1] 

机构地区：[1]太原理工大学土木工程系,太原030024

出　　处：《工业建筑》2003年第11期10-12,63,共4页Industrial Construction

摘　　要：结合两例不同桩体刚度的工程实例———石灰搅拌桩和CFG桩复合地基 ,进行了室内试验、现场载荷试验及非线性有限元分析 ,探讨了柔性桩复合地基和半刚性桩复合地基受力、变形性能的不同所在 ,指出桩体刚度的变化是影响复合地基承载特性的重要因素 ,进而提出了区分这两类复合地基的大致界限范围。同时 ,通过现场载荷试验 。Based on laboratory tests and loading tests at site together with nonlinear finite element analysis of two practical projects with different column rigidities,i.e.composite foundations of mixed lime soil column and CFG pile, the difference in bearing behaviours and deformations of soft pile composite foundation and semi stiff pile composite foundation is discussed.The results illustrate that the column rigidity is an important factor affecting the load transmitting in composite foundation.Then,the ranges of distinguishing these two types of foundations are suggested.Loading tests prove the reliability of the numerical analysis method and the rationality of the soil constitutive models.

关 键 词：桩体刚度 复合地基 石灰搅拌桩 CFG桩 非线性 有限元 柔性桩 

分 类 号：TU470[建筑科学—结构工程]