Research Article
Ground Settlements due to Construction of Triplet Tunnels with Different Construction Arrangements
Table 4
Overview of the tunnel lining parameters (Schotte et al. [
24]).
| Parameter | Bottom tunnels | Top tunnel | Heinenoord tunnel |
| Tunnel diameter, D (m) | 10 | 8 | 8.3 | Young modulus of concrete, Ec (MPa) | 37 | 37 | 37 | Unit weight of concrete, γc (kN/m3) | 24 | 24 | 24 | Lining thickness, t (m) | 0.5 | 0.5 | 0.4 | Lining surface area, A (m2) | 14.92 | 9.55 | 10.93 | Moment of inertia, I (m4) | 168.8 | 69.1 | 84.05 | Normal stiffness, EA (kN) | 1.85 ∗ 107 | 1.48 ∗ 107 | 1.05 ∗ 104 | Flexural rigidity, EI (kNm2) | 3.85 ∗ 105 | 1.97 ∗ 105 | 2.68 ∗ 104 | Lining weight, WLining (kN/m) | 12.02 | 9.61 | 24 | TBM weight, WTBM (kN/m) | 18.1 | 14.5 | 14.5 |
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