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.
出处
《工业建筑》
CSCD
北大核心
2003年第11期10-12,63,共4页
Industrial Construction
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
column rigidity\ composite foundation\ mixed lime soil column\ CFG pile\ nonlinear finite element analysis
