新建盾构法区间隧道下穿既有明挖隧道的影响实例分析

结合上海轨道交通11号线北段二期工程（江边风井一济阳路站盾构法区间隧道），对该区间下穿济阳路站6、8号联络线暗埋段结构的附加变形影响进行数值分析，为确定该区间隧道结构施工时的地层损失率设计控制指标提供参考和指导；经施工实测数据比较，验证计算结果的可靠性。

Analysis on Shield Tunneling beneath Existing Cut & Cover Tunnel

The study was combined with the phase 2 project of the north section of Shanghai Rail Transit Line 11,where there is a shield running tunnel(from the onshore ventilation shaft to Jiyang Road Station) shall pass through an existing cut and cover structure which is the linking track of rail transit line 6 and 8.The numerical calculation and analysis were made to the additional deformation of structure and the calculation data was provided as reference for the design control index of the ground loss rate in co...