后插笼二次高压注浆微型桩加固狭小基坑肥槽软基  

BACKFILL IMPROVEMENT OF FOUNDATION TRENCH BY POST-GROUTING MICRO-PILES WITH POST-INSERTED REINFORCING CAGE

作　　者：张慧乐[1] 李书伟 张慧东[1] 朱康 季建可 ZHANG Huile;LI Shuwei;ZHANG Huidong;ZHU Kang;LI Jianke(China Jingye Engineering Corporation Limited, Central Research Institute of Building and Construction Co. Ltd, MCC Group, Beijing 100088, China)

机构地区：[1]中国京冶工程技术有限公司中冶建筑研究总院有限公司

出　　处：《工业建筑》2018年第6期175-177,共3页Industrial Construction

摘　　要：结合某综合楼现场实际情况,通过方案对比选定后插笼二次高压注浆微型桩,以解决狭小空间基坑肥槽回填土地基的不均匀沉降问题。施工完成后利用标准贯入试验、静载试验等以检验施工效果,结果表明：加固后,地基土的密实度和承载性能明显提升,满足工程要求。Combined with the actual situation of a certain comprehensive building,the post-grouting micro-piles with post-inserted reinforcing cage were adopted after comparing some schemes that treated uneven settlement of foundation trench backfill. The reinforcement effect was detected by SPT,statics load test and so on. The results indicated that the compactness and bearing capacity of backfill met the engineering requirements.

关 键 词：后插笼 后注浆微型桩 回填土加固 基坑肥槽 

分 类 号：TU753[建筑科学—建筑技术科学]