Main geometric dimensions of high-speed rail of TB/T 2344.1-2020
| Location | Project | Allowable deviation | |
|---|---|---|---|
| Distance to rail end: 0∼1.5 m | Flatness | Vertical direction (upward) | 0～1 m∼≤0.3 mm/1 m |
| 0～1.5 m∼≤0.35 mm/1.5 m | |||
| Vertical direction (downward) | ≤0.2 mm | ||
| Horizontal direction | 0～1 m∼≤0.4 mm/1 m | ||
| 0～1.5 m∼≤0.5 mm/1.5 m | |||
| Distance to rail end:1 m∼2.5 m | Flatness | Vertical direction | ≤0.3 mm/1.5 m |
| Horizontal direction | ≤0.5 mm/1.5 m | ||
| Rail body | Flatness | Vertical direction | ≤0.3 mm/3 m and ≤0.2 mm/1 m |
| Horizontal direction | ≤0.45 mm/1.5 m | ||
| Location | Project | Allowable deviation | |
|---|---|---|---|
| Distance to rail end: 0∼1.5 m | Flatness | Vertical direction (upward) | 0～1 m∼≤0.3 mm/1 m |
| 0～1.5 m∼≤0.35 mm/1.5 m | |||
| Vertical direction (downward) | ≤0.2 mm | ||
| Horizontal direction | 0～1 m∼≤0.4 mm/1 m | ||
| 0～1.5 m∼≤0.5 mm/1.5 m | |||
| Distance to rail end:1 m∼2.5 m | Flatness | Vertical direction | ≤0.3 mm/1.5 m |
| Horizontal direction | ≤0.5 mm/1.5 m | ||
| Rail body | Flatness | Vertical direction | ≤0.3 mm/3 m and ≤0.2 mm/1 m |
| Horizontal direction | ≤0.45 mm/1.5 m | ||
Source(s): Table courtesy of TB/T 2344.1-2020
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