狭小空间地铁车站深基坑半盖挖法 施工关键技术

打开文本图片集

【中图分类号】：U231.4 【文献标志码】：A 【文章编号】：1008-3197（2026）01-43-05

【DOI编码】：10.3969/j.issn.1008-3197.2026.01.008

Key Technologies for Semi-Top-Down of Deep Foundation Pit inNarrow Space Metro Station

【Abstract】：Toaddressthesiteconstraintsandenvironmentalrisksintheconstructionofdeepfoundationpitsformetrostations innarrow spaces，takingastation of Rail Transit Line B1as the engineering example，this research clarifiesan eficient operation processsuitable for narrow spaces by sorting out the logic of key procedures inthe whole process of semi-top-down construction and optimizing the earth excavation sequence and mechanical configuration scheme.Meanwhile，targeted technical guarantee measures such as foundation pit deformation control and dewatering management are proposed.Engineering practice verification shows that this method has efectively solved the construction organization problems in narrow sites and achieved the safety and stability of the foundation pit as well as the improvement of comprehensive benefits.

【Key words】： semi-top-down construction；narrow space；metro station；deep foundation pit

随着地铁车站建设规模持续扩大，多数新建车站位于城市CBD、老城区等狭小空间区域～2。（剩余5491字）