Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed Assembly

Figure 14

Final broken shape of the intermediate ring segment: (a) damaged in left inner corner, (b) local failure of longitudinal joints, (c) failure of the right inner corner, (d) bolt hole crack, (e) longitudinal crack, (f) cracks around the grouting hole, (g) partial failure of the left lateral longitudinal joint, (h) outside the vault collapsed, (i) local failure of the outer longitudinal joint on the right, (j) schematic diagram of the internal crack, (k) schematic diagram of cracks in thickness direction, and (l) the damage of mortises and tenons.

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