长螺旋钻孔压灌桩后注浆施工技术  

POST-GROUTING OF LONG SPIRAL BORED PILES

作　　者：郭濛濛 叶晓东 陈博文 姜海 GUO Meng-meng;YE Xiao-dong;CHEN Bo-wen;JIANG Hai(China Construction Third Engineering Bureau Group Co.,Ltd.,102629,Beijing,China)

机构地区：[1]中建三局集团有限公司,北京102629

出　　处：《建筑技术》2023年第12期1496-1499,共4页Architecture Technology

摘　　要：长螺旋钻孔压灌桩施工技术是一种地基钻孔加固处理技术,施工过程中使用长螺旋钻头可以很好地凸显长螺旋工艺的优势。后注浆法的钻孔灌注桩是指桩的混凝土达到预定的强度,高压灌浆泵通过嵌入式灌浆管注入水泥浆的建筑技术。依托国电投项目,围绕长螺旋钻孔压灌桩技术在地基处理中的后注浆施工应用展开分析,可为同类工程提供参考。Post-grouting of long spiral bored piles is a technique for foundation borehole reinforcement.As the long auger bit is used in the construction process,the advantages of long spiral drilling are demonstrated.Bored pile post-grouting is a construction technology of pouring cement slurry by a high-pressure grouting pump through embedded grouting pipes after pile concrete reaches the predetermined strength.Relying on the projects of SPIC,the application of post-grouting of long spiral bored piles was analyzed,as a reference for similar projects.

关 键 词：长螺旋灌注桩 后注浆 钻孔加固 

分 类 号：TU74[建筑科学—建筑技术科学]