Research Article
Investigation of Concrete Base-Roadbed Surface Contact Variation-Induced Vibration Characteristics of Vehicle-Slab Track-Subgrade System considering Fluid-Solid Interaction
Table 3
Parameters of subgrade soil simulated.
| | Parameters | Roadbed surface layer | Roadbed bottom layer | Subgrade body |
| | Thickness (m) | 0.4 | 2.3 | 1.2 | | Elastic modulus (MPa) | 200 | 150 | 100 | | Poisson’s ratio | 0.25 | 0.3 | 0.35 | | Solid density (kg/m3) | 2300 | — | — | | Liquid density (kg/m3) | 1000 | — | — | | Soil density (kg/m3) | 2040 | 1700 | 2500 | | Porosity | 0.2 | — | — | | Compressibility parameter | 0.95 | — | — | | Fluid viscosity (Pa·s) | 0.001 | — | — | | Permeability (m/s) | 10−5 | — | — |
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