Research Article
Study on the Influence of Cracks on the Mechanical Performance of Tunnel Lining Structure Based on Fracture Mechanics Theory
Table 6
KI values under different crack depths.
| | Crack depth a (cm) | a/h | Stress intensity factor KI | Maximum vertical stress (MPa) | Maximum settlement (mm) |
| | 3 | 0.075 | 0.35 | 74.37 | 14.21 | | 6 | 0.15 | 0.77 | 123.8 | 18.41 | | 9 | 0.225 | 1.14 | 152.6 | 20.20 | | 18 | 0.45 | 5.35 | 362.2 | 32.21 |
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