多方案联合处理土岩组合地基效果研究  

Study on the effect of multi-scheme combined treatment of soil-rock composite foundation

作　　者：吴仁广 王东[1] 欧明喜[1] WU Renguang;WANG Dong;OU Mingxi(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming Yunnan 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《工业安全与环保》2023年第11期38-42,共5页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(51968036)。

摘　　要：建筑物土岩组合地基的不均匀沉降一直都是设计和施工的难题,结合工程实例,借助ABAQUS有限元软件,对使用CFG桩、旋挖桩和换填垫层法联合处理方案进行处理的土岩组合地基进行数值模拟。通过对比不同的地基处理方式对土岩组合地基差异沉降的影响,并分析地基的差异沉降和整体沉降,判断使用何种处理方式能较好地处理土岩组合地基的不均匀沉降问题。研究结果表明:使用CFG桩和换填垫层法联合处理的土岩组地基可以较好地解决地基的不均匀沉降问题,模拟结果可以为相关工程土岩组合地基的设计及处理提供一定的参考。Uneven settlement of soil-rock combination foundations of buildings has always been a difficult problem in design and construction.Combined with engineering examples,numerical simulation of soil-rock combination foundations treated with CFG piles,rotary piles and replacement bedding method combined treatment scheme is car-ried out with the help of ABAQUS finite element software.By analyzing the differential and overall settlement of the subgrade and comparing the influences of different subgrade treatment methods on the differential settlement of the soil-rock composite subgrade,this study explored which treatment method can better deal with the uneven settlement of the soil-rock composite subgrade.The research results show that the soil-rock group foundation treated with CFG piles and replacement bedding method can better solve the problem of uneven settlement of foundation,and the simu-lation results can provide certain reference for the design and treatment of soil-rock group foundation in related pro-jects.

关 键 词：土岩组合地基 不均匀沉降 CFG桩 旋挖桩 换填垫层法 

分 类 号：TU470[建筑科学—结构工程]