佛山地铁3号线高村站和美旗站软土深基坑设计分析

Design Analysis of Soft Foundation Deep Foundation Pit of Gaocun Station and Meiqi Station of Foshan Metro Line 3

依托佛山地铁3号线高村站和美旗站主体围护结构设计方案及现场施工情况,结合佛山顺德地区深厚软土等特点,对基坑监测数据与理论计算进行对比。两个车站规模及地质情况相近,基坑在变形、支撑轴力等方面有较大的差异。基于上述情况,对设计方案、施工方案等对基坑的影响进行探讨,并对地铁车站软土深基坑围护结构设计方案提出优化建议。相关结论可供软基地区地铁基坑设计参考。

Based on the design scheme of the main envelope structure of Gaocun Station and Meiqi Station of Foshan Metro Line 3 and the construction situation on site,combined with the characteristics of deep soft soil in Shunde District of Foshan,the monitoring data of foundation pit is compared with the theoretical calculation.The scale and geological conditions of the two stations are similar,and the foundation pits have great differences in deformation and support axial force.Based on the above situation,the influences of the design scheme and construction scheme on the foundation pit are discussed,and the optimization proposals for the design scheme of the deep foundation pit retaining structure of the soft soil of the metro station are proposed.The relevant conclusions can be used as reference for the design of subway pits in soft base areas.