Research Article
Settlement Behaviors of Metro Tunnels during the Metro Operation
Table 2
Wheel coupling system orbit parameters.
| | Quantity | The quality of the rail unit length () | Rail elastic modulus () | Rail section inertia () | Fastener vertical stiffness () | Fastener damping () | Sleeper quality () |
| | Value | 60 kg/m | 2.059 × 1011 Pa | 2.037 × 10−5 m4 | 7.8 × 107 N/m | 5 × 104 N⋅s/m | 125 kg |
| | Quantity | The sleeper spacing () | Under the sleeper rubber pad stiffness () | Under the sleeper rubber pad damping () | C40 concrete elastic modulus () | Concrete Poisson’s ratio () | |
| | Value | 0.545 m | 7.8 × 107 N/m | 5.88 × 104 N⋅s/m | 3 × 1010 Pa | 0.2 | |
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