Research Article
Experimental Investigation on the Influence of Regional Concrete Spalling on Shield Tunnel Segments
Table 8
Deformation of each group of segment.
| | Group number | Range of regional spalling | Elastic-plastic demarcation point | Critical point for loss of stability | | Corresponding loading step | Vertical convergence (cm) | Lateral convergence (cm) | Elliptical aspect ratio (%) | Corresponding loading step | Vertical convergence (cm) | Lateral convergence (cm) | Elliptical aspect ratio (%) |
| | 1 | 无 | 5 | 1.75 | 3.83 | 0.90 | 16 | 12.12 | 13.58 | 4.15 | | 2 | 45° | 6 | 4.26 | 3.98 | 1.33 | 15 | 22.20 | 21.58 | 7.06 | | 3 | 60° | 6 | 5.23 | 4.10 | 1.50 | 15 | 23.20 | 22.70 | 7.40 | | 4 | 75° | 6 | 5.40 | 4.45 | 1.59 | 14 | 25.67 | 26.59 | 8.43 |
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