Numerical Study on the Behavior of an Existing Tunnel during Excavating Adjacent Deep Foundation Pit

The excavation of a deep foundation pit adjacent to an existing tunnel may lead the large deformation and induce damages in structure. However, influence on structure from nearby excavations has not been understood clearly, since it is affected by complex influencing factors only geological topographical conditions but also construction method positional relationship structures. This paper presents numerical investigation into underground rail transit line during pit, which behavior excavating aforementioned clarified, effectiveness adopted three-dimensional model confirmed comparison between numerically calculated field-measured ground settlement monitoring point. results demonstrate that mostly induced pit. study can provide reference infrastructures.