摘要
以深圳地铁十号线凉帽山车辆段出入线大明挖工程为例,介绍了高边坡超载深基坑坑中坑支护设计的关键技术。针对工程中存在的高边坡超载作用、坑中坑开挖深度较大等特点,利用有限元数值方法对外坑采用桩锚支护、内坑采用桩撑支护的设计方案进行了理论分析计算,结合现场监测反馈结果验证了设计方案的合理性,可为同类工程设计提供借鉴和参考。
A case study of the key technology of retaining design of a pit in pit with high slope overload of an open deep excavation project of car depot in Liangmaoshan Mountain of Shenzhen Metro Line No.10 is introduced.Considering the high slope overload and the depth of pit-in-pit affect,theoretical analysis and calculations of the design scheme in which the external pit supported by pile-anchor system and the inner pit is supported by pile-strut system is carried out by finite element method.The rationality of the design scheme is verified by the site monitoring.It could be referred for the similar engineering design.
作者
戴锦程
惠世前
耶律根底
彭喜军
周跃飞
Dai Jincheng;Hui Shiqian;Yelv Gendi;Peng Xijun;Zhou Yuefei(Shenzhen Jindong engineering technology Co.,Ltd.,Shenzhen 518101,China;Sinohydro Bureau 14 Limitied Company,Kunming 650041,China)
出处
《工程勘察》
2018年第8期19-23,65,共6页
Geotechnical Investigation & Surveying
关键词
超载深基坑
坑中坑
有限元
监测
overloaded deep excavation
pit in pit
finite element
monitoring
