前撑式注浆钢管桩在砂质粉土层中的应用  

Application of Front-braced Grouting Steel Pipe Pile in Sandy Silt Layer

作　　者：陆秋平 周吉 陆陈华 LU Qiuping;ZHOU Ji;LU Chenhua(Shanghai Construction No.7(Group)Co.,Ltd.,Shanghai 200050,China)

机构地区：[1]上海建工七建集团有限公司

出　　处：《建筑施工》2019年第10期1792-1794,共3页Building Construction

摘　　要：以上海临港科技创新城A0202地块项目为例,研究了SMW(水泥土搅拌桩墙)工法桩+前撑式注浆钢管桩组合工艺应用于砂质粉土地区基坑围护结构的可行性,介绍了施工期间对前撑式注浆钢管桩施工工艺的改进,以期为相似地基条件下基坑围护结构的设计和施工提供参考。Taking the A0202 block project of Shanghai Lingang Science and Technology Innovation City as an example,this paper studies the feasibility of SMW(cement-soil mixing wall)construction method pile+front-braced grouting steel pipe pile composite process applied to foundation pit retaining structure in sandy silt area,and introduces the improvement of construction technology of front-braced grouting steel pipe pile during construction,which can provide references for the design and construction of the retaining structure of the foundation pit in similar foundation condition.

关 键 词：基坑围护 砂质粉土层 前撑式注浆钢管桩 SMW工法 

分 类 号：TU753.3[建筑科学—建筑技术科学]