Optimization for U-Shaped Steel Support in Deep Tunnels under Coupled Static-Dynamic Loading

Figure 13

Overall disturbance distortion. (a, d) Total deformation. (b, e) U-shaped steel magnification diagram. (b, e) Deformation of U-shaped steel monitoring point. (a), (b), and (c) are the numerical simulation of scheme 1, and (d), (e), and (f) are the numerical simulation of scheme 2.