Research Article
Shaking Table Tests for Seismic Response of Orthogonal Overlapped Tunnel under Horizontal Seismic Loading
Table 1
Similarity relations and similarity constants.
| | Model composition | Physical parameters | Similarity relations | Similarity constants |
| | Basic parameters | Length (L) | Cl | 1/50 | | Density (ρ) | Cρ | 1/1 | | Elastic modulus (E) | CE | 1/30 | | Derived parameters | Model material parameters | Stress (σ) | Cσ = CECε | 1/30 | | Strain (ε) | Cε = 1 | 1/1 | | Poisson’s ratio (μ) | Cμ = 1 | 1/1 | | Internal friction angle (ϕ) | Cϕ = 1 | 1/1 | | Seismic response parameters | Time (t) | Ct = Cρ0.5CE−0.5CL | 1/9.129 | | Displacement (d) | Cd = CL | 1/50 | | Velocity () | = Cρ0.5CE−0.5 | 1/0.183 | | Acceleration (a) | Ca = Cρ−1CECL−1 | 1/0.6 |
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