Numerical Simulation Research on Earthquake Induced Dynamic Responses of Underground Tunnel
A number of nodes at different strata positions of tunnel roof were selected as research objects, the law between the roof deformation and the speed or acceleration time-history of horizontal and vertical direction were simulated on conditions of inputting earthquake wave at particular lacation of deep tunnel floor. With the gradually increasing distance from tunnel top surface, the “high -low-high” law of peak values were performed in speed time-history and acceleration speed time-history curves. One peak value was overally performed on vertical speed time-history curves, but multiple peak fluctuation was indicated in vertical acceleration time-history, horizontal speed and horizontal accelaration time-history curves.
S. T. Gu et al., "Numerical Simulation Research on Earthquake Induced Dynamic Responses of Underground Tunnel", Applied Mechanics and Materials, Vols. 90-93, pp. 1931-1935, 2011