CFG桩在非自重湿陷性黄土地层中的应用  

Application of CFG Pile in Non-self-weight Collapsible Loess Stratum

作　　者：孙金龙 Sun Jinlong(Comprehensive Geological Engineering Company of Beijing Mining Bureau,Beijing 102300,China)

机构地区：[1]北京矿务局综合地质工程公司,北京102300

出　　处：《岩土工程技术》2020年第5期273-275,共3页Geotechnical Engineering Technique

摘　　要：以张家口下花园区鸿翔美域地基处理工程实践为例,结合CFG桩复合地基技术原理,充分利用非自重湿陷性黄土达到湿陷起始压力前能够承担荷载的特点,通过调整桩、土之间的荷载分配,控制非自重湿陷性黄土承担的荷载不超过其湿陷起始压力,可以在不专门消除黄土湿陷性的情况下,使地基在承载力和沉降控制方面达到建筑物设计要求,从而较大幅度降低地基处理成本,为非自重湿陷性黄土地基处理提供了新方案。Taking Hongxiangmeiyu foundation treatment project in Xiahuayuan District of Zhangjiakou as an example,combined with the technical principle of CFG pile composite foundation,the characteristics of non-self-weight collapsible loess bearing load before reaching the initial collapsible pressure are fully utilized.By adjusting the load distribution between pile and soil,the load of non-self-weight collapsible loess should not exceed its initial collapsible pressure,which can be controlled under the condition of collapsibility.The bearing capacity and settlement control of foundation can meet the design requirements of buildings,thus greatly reducing the cost of foundation treatment,and providing a new treatment of non-self-weight collapsible loess foundation.

关 键 词：CFG 非自重湿陷性黄土 地基处理 

分 类 号：TU472[建筑科学—结构工程]