软土地区机场地下交通枢纽工程扩底桩基施工工艺  

Construction Technology of Bottom-expanding Pile Foundation of Airport Underground Transportation Hub Project in Soft Soil Area

作　　者：丁德申 DING Deshen(Shanghai Mechanized Construction Group Co.,Ltd.,Shanghai 200072,China)

机构地区：[1]上海市机械施工集团有限公司,上海200072

出　　处：《建筑施工》2023年第11期2182-2184,共3页Building Construction

基　　金：上海市国有资产监督管理委员会科研项目课题(2021005)。

摘　　要：结合工程实际,对扩底桩在软土地区应用的施工技术进行了研究。通过试桩比选,AM旋挖扩底桩和回转扩底桩2种扩底工艺更加适合软土地区的施工。通过采用差异化硬化地坪、工厂化制浆、机器人焊接钢筋笼等技术措施,顺利地完成大规模扩底桩施工,总结的经验可供类似工程的桩基施工借鉴。The construction technology of bottom-expanding pile in soft soil area is studied in combination with engineering practice.Through the comparison and selection of test piles,the two bottom-expanding technologies of AM rotary excavation bottom-expanding pile and rotary bottom-expanding pile are more suitable for the construction in soft soil area.The large-scale construction of bottom-expanding piles was successfully completed by adopting such technical measures as differential hardening of floor,factory pulping and robot welding of reinforcement cage,and the experience summarized can be used for reference in pile foundation construction of similar projects.

关 键 词：软土地区 AM旋挖扩底桩 回转扩底桩 桩基检测 

分 类 号：TU753[建筑科学—建筑技术科学]