孔内强夯碎石桩在仓储地基处理中的应用  

Application of Dynamic-Rammed Gravel Columns in Ground Treatment

作　　者：曾华健 伍翔飞 潘忱 刘雪珠 郑海波 ZENG Huajian;WU Xiangfei;PAN Chen;LIU Xuezhu;ZHENG Haibo(Jiangsu Geotechnical Engineering Co.,Ltd.,Nanjing 210000)

机构地区：[1]江苏省岩土工程公司,南京210000

出　　处：《土工基础》2021年第3期302-306,共5页Soil Engineering and Foundation

摘　　要：随着物流行业的迅速发展,物流仓储工程逐渐增多,大面积建筑地坪软基处理的难题也随之增加。针对青岛某物流中心项目,涉及杂填土、黏性土、素填土、淤泥质土及化工白泥等不良地质,综合分析多种地基处理方法,在复杂场地条件下,采用孔内强夯碎石桩对大面积仓储地坪、基础进行加固处理,以变形协调设计为主导,解决软土沉降、承载力不足及不均匀沉降问题,阐述孔内强夯碎石桩处理软土地基的设计、施工工艺及施工方法,最后对复合地基现场试验检测结果进行分析,结果表明该方法具有良好的处理效果,相关结论可为类似工程提供参考。With the rapid development of the logistics industry,logistics warehousing projects are gradually increasing,and the problem of soft ground treatment of large area building floor is also increasing.This paper presents a case history of ground treatment of a logistics center project in Qingdao,which involves poor geological conditions such as miscellaneous fill,soft clayey soil,plain fill,muddy soil and chemical white mud.A variety of ground treatment methods are comprehensively evaluated under these site conditions.The dynamic-rammed gravel columns are used to strengthen the large area for the proposed storage floors and foundations,which are dominated by deformation coordination design to solve the concerns of soft soil settlement,insufficient bearing capacity and uneven settlement.This paper describes the design,construction technology and method of dynamic-ramming gravel piles in hole of soft soil foundation.Furthermore,the field test results of composite foundation are analyzed,the results show that the method has satisfactory treatment effect and the relevant conclusions can provide reference for similar projects.

关 键 词：孔内强夯碎石桩 地基处理 软土沉降 变形协调 

分 类 号：TU472[建筑科学—结构工程]