湿陷性黄土地区挤密桩应用效果研究  

Research on the Application Effect of Compaction Pile in Collapsible Loess Area

作　　者：孙亚军 SUN Yajun(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22期109-111,共3页Engineering and Technological Research

摘　　要：湿陷性黄土地区因地质结构不稳定,常面临地基沉降、变形和开裂等问题,会降低建筑物的支撑力,迫切需要采取有效的地基强化措施进行控制。文章探讨湿陷性黄土沉降机理及加固方法,分析挤密桩的施工工艺、操作流程及工艺参数,确定挤密桩桩长为6 m,桩径为0.4 m。结果表明,使用挤密桩后,地基沉降明显降低,相较于未采用挤密桩的地基沉降值分别降低了35.1%、45.2%与32.9%。Due to the instability of geological structure in collapsible loess area,it is often faced with the problems of foundation settlement,deformation and cracking,which will reduce the support force of buildings.Therefore,it is urgent to take effective foundation strengthening measures for control.This paper discusses the settlement mechanism and reinforcement method of collapsible loess,analyzes the construction process,operation process and process parameters of compaction pile,and determines that the length of compaction pile is 6 m and the diameter of the pile is 0.4 m.The results show that the foundation settlement is signifi cantly reduced after using compaction piles,and the settlement values of the foundation are reduced by 35.1%,45.2%and 32.9%respectively compared with that of the one without using compaction piles.

关 键 词：湿陷性黄土 挤密桩 地基沉降 

分 类 号：TU475.3[建筑科学—结构工程] TU753.8[建筑科学—土工工程]