摘要
文章以广州某采用锚索工法施工的超深基坑工程为例,针对该基坑开挖过程中出现的桩顶及支护结构水平位移等变形数据超限问题,参建各方通过采用回填基坑、加强支撑及架设临时钢支撑等应急措施,有效控制基坑围护整体变形趋势,为后续主体结构施工提供了安全保障。最后总结了基坑围护选型、质量控制、施工监测、应急抢险等设计或施工环节关注点及问题,以期对类似围护及地层条件的深基坑的后期设计方案、施工控制及现场管理提供相关经验。
Taking an ultra-deep foundation pit engineering constructed by anchor cable method in Guangzhou as an example,aiming at the problems of deformation data overrun such as horizontal displacement of pile top and support structure during the excavation of the foundation pit,the parties involved in the construction effectively control the overall deformation trend of the foundation pit enclosure by adopting emergency measures such as backfilling foundation pit,strengthening support and erecting temporary steel support,which provides safety guarantee for the subsequent construction of the main structure.Finally,the key points and problems in the design or construction of foundation pit support selection,quality control,construction monitoring,emergency rescue and so on are summarized,in order to provide relevant experience for the later design scheme,construction control and field management of deep foundation pit with similar enclosure and stratum conditions.
作者
章文菁
李楠
ZHANG Wenjing;LI Nan(Guangzhou City Polytechnic,Guangzhou 510000,Guangdong,China;Guangzhou Railway Investment and Construction Group Co.,Ltd.,Guangzhou 510000,Guangdong,China)
出处
《工程技术研究》
2023年第23期40-42,共3页
Engineering and Technological Research
基金
2022年度广州市教育局高校科研项目“基于BIM技术的既有建筑运维管理系统开发与实践研究”(202235424)。
关键词
锚索工法
超深基坑
变形数据超限
anchor cable construction method
ultra-deep foundation pit
deformation data overrun
