主体结构环板作为水平支撑的地铁深基坑分析——以武汉地铁3号线王家墩中心站为例

Analysis on Complicated Deep Metro Foundation Pit Supported by Ring Plate Substructures: Case Study on Wangjiadun Center Station on Line 3 of Wuhan Metro

研究了大基坑采用主体结构环板作为水平支撑的支护方案。建立载荷-结构法三维有限元模型,对采用主体结构环板作为水平支撑的大基坑支护方案进行了计算,并将计算结果与监测数据进行对比分析。工程实践证明:对于大基坑采用主体结构环板作为水平支撑可提供较大的支护刚度,基坑施工安全、高效、环保。

Ring plate substructures have been used as the bracing of the deep foundation pit of Wangjiadun Center Station on Line 3 of Wuhan Metro. In the paper,3D load structure model is established and analysis is made on the deep Metro foundation pit supported by ring plate substructures,and the measured data are compared with the simulation results. The engineering practice shows that the ring plate support system can provide high support rigidity and the construction of the deep foundation pit can be completed safely,efficiently and environment-friendly.