挤密桩在湿陷性黄土地基加固中的应用  

The Application of Compaction Pile in the Collapsible Loess Foundation Reinforcement

作　　者：妙小岗 MIAO Xiaogang(Gansu Railway Comprehensive Engineering Survey Institute Co.,Ltd.,Lanzhou 730000,Gansu,China)

机构地区：[1]甘肃铁道综合工程勘察院有限公司,甘肃兰州730000

出　　处：《工程技术研究》2024年第23期119-121,共3页Engineering and Technological Research

摘　　要：湿陷性黄土是我国特定地质条件下普遍存在的一种特殊土体类型,其独特的湿陷特性给建筑工程的稳固性和安全性带来了严峻挑战。文章总结了湿陷性黄土地基加固方法,并根据某实际工程案例,研究了挤密桩在湿陷性黄土地基加固中的应用效果。研究结果显示,经过挤密桩加固后,土体的含水量明显降低,水分被有效抽离;干密度显著增加,表明土体的压缩性下降,地基承载力得到提升;孔隙比在加固施工后有所减小,特别是在桩体周围区域,土体的密实度得到了提升。Collapsible loess is a special soil type that is common under specific geological conditions in China,and its unique collapsible characteristics have brought severe challenges to the stability and safety of building engineering.This paper summarizes the reinforcement methods of collapsible loess foundation,and studies the application effect of compaction pile in the reinforcement of collapsible loess foundation according to a practical engineering case.The research results show that after the reinforcement of the compaction pile,the water content of the soil is significantly reduced,and the water is effectively extracted;the dry density increases significantly,indicating that the compressibility of the soil decreases and the bearing capacity of the foundation is improved;the porosity ratio decreases after the reinforcement construction,especially in the surrounding area of the pile body,and the compactness of the soil is improved.

关 键 词：挤密桩 湿陷性黄土 地基处理 现场监测 密实度 

分 类 号：TU753[建筑科学—建筑技术科学]