Research Article
Dynamic Response of Parallel Overlapped Tunnel under Seismic Loading by Shaking Table Tests
Table 2
Similarity relations and ratios.
| | | Physical parameters | Symbol and relational expression | Similarity ratio |
| | Geometric parameters | Length (L) | CL | 1/100 | | Linear displacement (x) | Cx = CL | 1/100 |
| | Material parameters | Density (ρ) | Cρ | 1 | | Stress (σ) | Cσ = CE | 1/100 | | Strain (ε) | Cε | 1 | | Poisson’s ratio (μ) | Cμ | 1 | | Internal friction angle (ϕ) | Cϕ | 1 | | Cohesion (c) | Cc = CE | 1/100 | | Elastic modulus (E) | CE=CLCaCρ | 1/100 |
| | Dynamic parameters | Acceleration (a) | Ca | 1 | | Frequency (f) | | 1/0.1 | | Velocity () | | 1/10 | | Time (t) | | 1/10 |
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