Research Article
Estimation of Cement Asphalt Mortar Disengagement Degree Using Vehicle Dynamic Response
Table 2
Properties for high-speed line.
| Property | Unit | Symbol | Value |
| Elastic modulus of rail | N/m2 | | 2.059 × 1011 | Rotational inertia of rail | m4 | | 3.217 × 10−5 | Mass of rail per unit length | kg/m | | 60.64 | Stiffness of rail pad | N/m | | 6 × 107 | Damping of rail pad | N·s/m | | 7.5 × 104 | Length between fasteners | m | | 0.65 | Length of track slab | m | | 6.5 m | Mass of track slab | kg | | 8.3 × 103 | Elastic modulus of track slab | MPa | | 3.9 × 104 | Rotational inertia of track slab | m4 | | 3.32 × 107 | Stiffness of CA mortar | N/m2 | | 1.25 × 109 | Damping of CA mortar | N·s/m2 | | 3.458 × 104 |
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