Numerical Simulation on Dynamic Response of Existing Tunnel to Moving-Axle Loads under the Influence of Oblique Shield Crossing the Intersection Area

Figure 11

Peak displacement of observation points on existing tunnel: (a) shield excavation reaches the 15^th ring on the left; (b) shield excavation reaches the 30^th ring on the left; (c) shield excavation reaches the 52^th ring on the left.

(a)

(b)

(c)