地铁隧道上方基坑卸荷回弹及控制的试验和探讨

Experiment and Study on Unloading Rebound Control of Foundation Pit above Metro Tunnel

通过土体室内试验及对工程实践实测数据的分析,研究探讨位于地铁隧道上方的软土基坑卸荷回弹的特性和控制回弹的措施,以保证基坑下卧土层中地铁隧道的运营安全。

Through laboratory soil test and analysis of test data,the unloading rebound characteristics of soft soil foundation pit above metro tunnel are discussed and the measures for rebound control are put forward so as to ensure the safety of metro operation in the lower soil layer of the foundation pit.