ABSTRACT
The ground and tunnel settlement significantly degrade both the serviceability and safety of tunnel and its surroundings. In this paper, a typical numerical analysis is conducted to study the ground and tunnel settlement due to train load coupled with tunnel leakage in soft soil deposit of Shanghai. Two typical models are established according to the tunnel leakage conditions, namely without tunnel leakage and with uniform tunnel leakage. The development of excess pore pressure of the soil around the tunnel is analyzed. The long-term ground and tunnel settlement is predicted using the Gaussian curve based on the numerical calculation results. The results shows that the cumulative train-load-induced tunnel settlement increases as the operation time increases and the tunnel leakage can significantly increase the long-term ground and tunnel settlement.
