复杂施工环境下的建筑基坑支护设计与施工研究  

Research on Design and Construction of Building Foundation Pit Support under Complex Construction Environment

作　　者：刘东彦 LIU Dongyan(Beijing Urban and Rural Construction Survey and Design Institute Co.,Ltd.,Beijing 100037,China)

机构地区：[1]北京市城乡建设勘察设计院有限公司,北京100037

出　　处：《工程技术研究》2024年第24期185-187,共3页Engineering and Technological Research

摘　　要：在房建、公路及市政等建筑工程项目施工中,基坑支护问题十分常见,支护方案会对工程基坑施工及建成后建筑的安全性产生直接影响。文章以某综合楼建筑工程为例,结合复杂施工环境,在综合比选后设计暗挖施工结合内支撑结构支护方式,从初期支护、格栅钢架支护、锚杆与钢筋网支护、内支撑施工等方面全面分析基坑支护施工技术,工程监测结果显示,基层水平位移、桩顶沉降、周边地表沉降最大值分别为15.9 mm、7.8 mm、12.45 mm,符合工程控制值。In the construction of housing,highway and municipal building engineering projects,the problems about foundation pit support are very common,and the support scheme will have a direct influence on the construction of the engineering foundation pit and the safety of the completed building.Taking a multipleuse building project as an example,combined with the complex construction environment,this paper designs the support mode of undercutting construction combined with internal support structure after comprehensive comparison and selection,and comprehensively analyzes the construction technology of foundation pit support from the aspects of initial support,grid steel frame support,bolt and steel mesh support,internal support construction and so on.The engineering monitoring results show that the maximum base horizontal displacement,the pile top settlement and the surrounding surface settlement are 15.9 mm,7.8 mm and 12.45 mm respectively,which are in line with the engineering control value.

关 键 词：建筑工程 基坑支护 暗挖施工 内支撑结构 复杂施工环境 

分 类 号：TU753[建筑科学—建筑技术科学]