抗疏力复合地基的变形特性研究  

Study on deformation characteristic of consolid composite foundation

作　　者：杨永东[1] 刘万锋[1] 董芸秀 张斌伟[1,2] 

机构地区：[1]陇东学院土木工程学院,甘肃庆阳745000 [2]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《中国建材科技》2016年第1期51-53,共3页China Building Materials Science & Technology

基　　金：甘肃省科技支撑计划项目(1204FKCM181);庆阳市青年科技研究基金项目(zj2014-06)

摘　　要：抗疏力复合地基是以抗疏力工程土为竖向增强体形成的复合地基,根据抗疏力工程土的工程特性,结合有限元分析软件对抗疏力桩复合地基进行了数值分析,结果表明抗疏力固化土和灰土工程土在工程特性上较为接近,可以做为处理黄土地基的材料;随着荷载增加,地基变形量的变化幅度增大;桩越长,桩土间的相互作用增强,土体对桩的约束增强,桩的沉降减小。抗疏力桩复合地基存在有效桩长,桩径为400mm的抗疏力桩的有效桩长为直径的15倍。The consolid composite foundation is formed of the consolid engineering soil which is the vertical enhanced body. The deformation of the consoid composite foundation is analyzed by finite element method, which is used the characteristic of consolid engineering soil. The conculusion shows that, the engineering characteristic of consolid soil is nearing compared with the gray soil. So, it is feasible to choose the consolid soil as the material which is used to dispose the base. When the load is increasing, the deformation of the foundation will be increasing. And the deformation of the pile is decreased with the length is increasing,because of the interaction of the pile and the soil between piles. And there is effective length for consolid pile. It is 15 time of diameter if the diameter is 400mm.

关 键 词：抗疏力技术 地基处理 复合地基 承载机理 湿陷性黄土 

分 类 号：TU411.3[建筑科学—岩土工程]