摘要
依托成都地铁5号线中医大省医院站,利用有限差分法,模拟砂卵石地层的基坑分步开挖和排桩内支撑加固大断面异形基坑的支护形式,分析大断面地下空间开挖的变形影响范围和邻近建(构)筑物稳定性,并结合监测数据提出合理的防护措施,为砂卵石地层大断面地下空间开挖的研究提供参考。
Relaying the engineering of the metro station of Chengdu University of TCM&Sichuan Provincial People's Hospital in Chengdu Metro Lines,the stepped excavation of foundation pit in sandy cobble stratum was carried out with finite difference numerical method.The support system of large section irregular foundation pit was strengthened by internal bracing of piles in row.The deformation effect and stability of adjacent building in such excavation was then analyzed with the proper protection measures proposed according to the monitoring data,which provides references to the study of excavation of large section underground space in sandy cobble stratum.
作者
赵何明
ZHAO Heming(The Fifth Engineering Co.Ltd.of China Railway Construction Bridge Engineering Bureau Group,Chengdu 610015,China)
出处
《路基工程》
2020年第3期155-160,共6页
Subgrade Engineering
基金
中国铁建大桥工程局集团有限公司课题(Cr13gk-2016-12)。
关键词
地铁车站
复杂环境
大断面开挖
异形基坑
开挖稳定性
subway station
complex environment
large section excavation
irregular foundation pit
stability of excavation
