Research Article
Influence of Seismic Loading on Segment Opening of a Shield Tunnel
Table 4
Segment opening and joint deformation under different seismic loading conditions.
| | Conditions | Maximal opening (mm) | Average opening (mm) | Maximal opening by seismic action (mm) | Average opening by seismic action (mm) | Joint deformation state |
| | No seismic loading | 2.57 | 0.91 | — | — | Partial plastic | | S-wave of fortification intensity VII | 2.98 | 2.51 | 0.41 | 1.6 | Overall plastic | | P-wave of fortification intensity VII | 3.11 | 1.16 | 0.54 | 0.25 | Partial plastic | | Bidirectional coupled loading of fortification intensity VII | 3.5 | 2.71 | 0.93 | 1.8 | Overall plastic | | S-wave of fortification intensity VIII | 4.01 | 3.99 | 1.44 | 3.08 | Overall plastic | | P-wave of fortification intensity VIII | 3.86 | 1.39 | 1.29 | 0.48 | Partial plastic | | Bidirectional coupled loading of fortification intensity VIII | 4.49 | 4.30 | 1.92 | 3.39 | Overall plastic |
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