Double-line box arch tunnel lining crack pattern and quantity statistics
| Tunnel segment number | Crack distribution characteristics | ||
|---|---|---|---|
| Longitudinal cracks | Total length of cracks/cm | ||
| Quantity | Position | ||
| 7# | 3 | Left wall foot, right wall foot | 60 |
| 8# | 5 | Right arch foot, right wall foot, top of middle column, baseplate | 85 |
| 9# | 3 | Baseplate, left arch foot | 56 |
| 10# | 2 | Inside and outside of baseplate | 48 |
| 11# | 2 | Baseplate, bottom of middle column | 36 |
| 12# | 1 | Inside of baseplate | 26 |
| Summary | 14 | Damage mainly concentrated in: inside and outside bottom plant, outside wall foot, outside arch foot | 311 |
| Damage type | Mainly large eccentricity damage | ||
| Cracking range | The hanging wall cracking range is 3.5 segments, 84 cm (1.75 D), and the footwall cracking range is 2.5 segments, 60 cm (1.25 D). The damage scope of the hanging wall is obviously larger than that of the footwall; the crack length of the hanging wall is 225 cm and that of the footwall is 86 cm. The damage degree of the hanging wall is greater than that of the footwall | ||
| Tunnel segment number | Crack distribution characteristics | ||
|---|---|---|---|
| Longitudinal cracks | Total length of cracks/cm | ||
| Quantity | Position | ||
| 7# | 3 | Left wall foot, right wall foot | 60 |
| 8# | 5 | Right arch foot, right wall foot, top of middle column, baseplate | 85 |
| 9# | 3 | Baseplate, left arch foot | 56 |
| 10# | 2 | Inside and outside of baseplate | 48 |
| 11# | 2 | Baseplate, bottom of middle column | 36 |
| 12# | 1 | Inside of baseplate | 26 |
| Summary | 14 | Damage mainly concentrated in: inside and outside bottom plant, outside wall foot, outside arch foot | 311 |
| Damage type | Mainly large eccentricity damage | ||
| Cracking range | The hanging wall cracking range is 3.5 segments, 84 cm (1.75 D), and the footwall cracking range is 2.5 segments, 60 cm (1.25 D). The damage scope of the hanging wall is obviously larger than that of the footwall; the crack length of the hanging wall is 225 cm and that of the footwall is 86 cm. The damage degree of the hanging wall is greater than that of the footwall | ||