Research Article
The Influence of the Track Parameters on Vibration Characteristics of Subway Tunnel
Table 2
Wheel coupling system orbit parameters in specific value.
| | Quantity | The quality of the rail unit length (mr) | Rail elastic modulus (E) | Rail section inertia (I) | Fastener vertical stiffness (Kr) | Fastener damping (Cr) | Sleeper quality (ms) | The sleeper spacing (a) | Under the sleeper rubber pad stiffness (Ks) | Under the sleeper rubber pad damping (Cs) | C40 concrete elastic modulus (Ec) | Concrete Poisson’s ratio (ν) |
| | Value | 60 kg/m | 2.059 × 1011 Pa | 2.037 × 10−5 m4 | 7.8 × 107 N/m | 5 × 104 N·s/m | | 0.545 m | 7.8 × 107 N/m | 5.88 × 104 N·s/m | 3 × 1010 Pa | 0.2 |
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