既有应急低层建筑基础不均匀沉降紧急注浆加固综合处理措施  

COMPREHENSIVE TREATMENT MEASURES FOR EMERGENT GROUTING REINFORCEMENT OF UNEVEN SETTLEMENT OF EXISTING EMERGENCY LOW-RISE BUILDING FOUNDATION

作　　者：何小飞 胡娟 HE Xiao-fei;HU Juan(Beijing Urban Construction Huaxia Infrastructure Engineering Co.,Ltd.,101116,Beijing,China)

机构地区：[1]北京城建华夏基础建设工程有限公司,北京101116

出　　处：《建筑技术》2021年第10期1255-1258,共4页Architecture Technology

摘　　要：针对紧急情况下建立的各类低层建筑存在的局部不均匀沉降和沉降量过大现象,分析不均匀沉降注浆加固纠偏措施,结果表明对既有建筑物基础周边打竖向注浆孔、并灌入双液浆进行封孔形成防止浆液外溢的封闭圈,可使水泥浆在指定区域内固化土体,在紧急抢险情况下能缩短处理时间,提高注浆效果;采用总处理体积乘以孔隙率、再乘以填充系数方法进行注浆量的估算及施工控制,在短期内完成了地基加固抢险工作,收到了较好的处理效果。Considering the local uneven and excessive settlement of various low-rise buildings under emergency conditions,this paper analyzed the rectification measures of uneven settlement grouting reinforcement.The result showed vertical grouting holes drilled around foundation of existing buildings and double slurry poured to seal the holes could form a closed circle to prevent slurry overflowing,so as to solidify the soil in the designated area during reinforcement treatment,to shorten the treatment time and to improve the grouting effect under emergency rescue;treatment volume multiplied by porosity and filling factor was used for grouting amount estimation and construction control,to finish the foundation reinforcement under emergency in a short period and realize favorable treatment effect.

关 键 词：不均匀沉降 注浆加固 竖向封闭 注浆量 

分 类 号：TU37[建筑科学—结构工程]