Table 1 The mechanical properties of the materials, modelling techniques, and mesh sizes used for the slab track FEMs
From: Development of a new design methodology for slab track systems
Component | Material description | Modelling technique | Mesh size (m) | γ (kN/m3) | E (MPa) | υ | Φ | C (KPa) |
|---|---|---|---|---|---|---|---|---|
UIC 60 rail | Steel | Linear-elastic model | 0.10 | 78.5 | 210,000 | 0.30 | - | - |
CBL | Reinforced concrete | 0.20 | 25.0 | 36,000 34,000a | 0.20 | - | - | |
Sleepers | Reinforced concrete | 0.20 | 25.0 | 34,000 | 0.20 | - | - | |
CAM (grouting) | Cemented-asphalt mixture | 0.30 | 23.0 | 22,500 | 0.25 | - | - | |
HBL | Mixture of aggregates with hydraulic binder | 0.30 | 24.0 | 17,870 | 0.20 | - | - | |
FPL | Mixture of sands and gravel | Mohr-Coulomb model | 0.50 | 21.44 | 120 | 0.30 | 35 | 1 |
Replacement soil | Well-graded limestone (AASHTO: A-1-b) | 0.50 | 20.91 | 100 to 400 | 0.30 | 35 | 1 | |
Subgrade soil | Sandy silt (AASHTO: A-2-6) | 0.50 | 17.00 | 20 to 100 | 0.30 | 10 | 10 |