Table 6 Three states of derailment coefficient, wheel weight reduction rate fluctuation range.
From: A simplified method for determining earthquake early warning thresholds in high speed railways
State | State description | Speed (km/h) | Derailment coefficient | Wheel load reduction rate |
|---|---|---|---|---|
C | Earthquake load effect | 0 | 0–0.33 | 0–0.85 |
B | Track irregularity excitation effect | 300 | 0–0.32 | 0–0.29 |
A | Combined effect of earthquake and track irregularity | 100 | 0–0.76 | 0–0.64 |
200 | 0–0.85 | 0–0.77 | ||
300 | 0–0.92 | 0–0.99 |
