Research Article
Analysis of Three-Dimensional Vibration Characteristics of Single-Circle Double-Track Subway Tunnel under Moving Load
Table 2
Track system and tunnel structure parameter.
| | Name | Thickness (m) | Density (kg·m−3) | Elastic modulus (MPa) | Poisson’s ratio (ν) | Damping ratio (ζ) | Rayleigh damping (α) | Rayleigh damping(β) |
| | Track | 0.176 | 7800 | 210 | 0.3 | 0.01 | 0.14488 | 0.00069 | | Track slab | 0.2 | 2500 | 35.5 | 0.1 | 0.03 | 0.08968 | 0.01003 | | Floor | 0.3 | 2500 | 30 | 0.1 | 0.03 | 0.08968 | 0.01003 | | Ballast | 3.1 | 2400 | 28 | 0.1 | 0.03 | 0.08968 | 0.01003 | | Lining | 0.3 | 2400 | 28 | 0.1 | 0.03 | 0.08968 | 0.01003 | | Segment | 0.5 | 2400 | 30 | 0.1 | 0.03 | 0.08968 | 0.01003 |
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