褥垫层刚度对CFG桩复合地基的桩土应力比影响规律研究  

Study on the Influence of Cushion Stiffness on Pile-Soil Stress Ratio of CFG Pile Composite Foundation

作　　者：任志勇 Ren Zhiyong(Hunan Jiaojian Group Co.,Ltd.,Changsha 410013,China)

机构地区：[1]湖南教建集团有限公司,湖南长沙410013

出　　处：《科学技术创新》2022年第35期135-138,共4页Scientific and Technological Innovation

摘　　要：为了解褥垫层刚度对CFG桩复合地基的桩土应力比的变化规律,建立了三维数值模型,研究不同桩间土体和褥垫层弹性模量参数对CFG桩复合地基桩-土应力的影响规律,优化褥垫层参数设计。结果表明,桩间土体弹性模量和褥垫层弹性模量对桩土应力比均有显著影响,桩土应力比随褥垫层弹性模量增大而增大,随桩间土体弹性模量增大而减小。In order to understand the change law of cushion stiffness on pile-soil stress ratio of CFG pile composite foundation,a three-dimensional numerical model was established to study the influence of different elastic modulus parameters of soil and cushion between piles on pile-soil stress of CFG pile composite foundation,and to optimize the design of cushion parameters.The results show that the elastic modulus of soil between piles and the elastic modulus of cushion have a significant effect on the pile-soil stress ratio.The pile-soil stress ratio increases with the increase of the elastic modulus of cushion,and decreases with the increase of the elastic modulus of soil between piles.

关 键 词：弹性模量 CFG桩复合地基 桩土应力比 

分 类 号：TU470[建筑科学—结构工程]