Research Article
Influence of Blasting Vibration on Young Concrete Bridge: A Case Study of Yesanhe Super Large Bridge
Table 1
PPV and main frequency of the bridge under blasting tests.
| Explosion source | Pier | Number of monitoring points | Location of monitoring points | Vertical PPV (cm/s) | Vertical main frequency (Hz) | Horizontal PPV (cm/s) | Horizontal main frequency (Hz) |
| Intake slope | 4# pier | 5# | Pier foundation | 0.03 | 39.1 | 0.09 | 22.3 | 7# | Edge of box girder | 0.03 | 39.1 | 0.11 | 17.4 | 8# | Edge of box girder | 0.03 | 31.3 | 0.16 | 17.4 | 9# | Center of box girder | 0.03 | 45.3 | 0.08 | 36.3 | 10# | Edge of box girder | 0.12 | 31.3 | 0.2 | 17.4 | 3# pier | 11# | Pier foundation | 0.03 | 31.3 | 0.04 | 26 | 12# | Edge of box girder | 0.04 | 28.4 | 0.05 | 26 | 13# | Edge of box girder | 0.06 | 41.7 | 0.07 | 34.7 |
| Right abutment | 4# pier | 5# | Pier foundation | 0.03 | 31.3 | 0.03 | 25.8 | 6# | Pier foundation | 0.03 | 26.3 | 0.07 | 26.3 | 8# | Edge of box girder | 0.07 | 26.3 | 0.1 | 25 | 10# | Edge of box girder | 0.01 | 22.7 | 0.09 | 17.2 | 3# pier | 11# | Pier foundation | 0.03 | 21.7 | 0.03 | 26.3 | 12# | Edge of box girder | 0.09 | 26.3 | 0.09 | 26.3 |
| Left abutment | 4# pier | 5# | Pier foundation | 0.03 | 15.6 | 0.04 | 13 | 6# | Pier foundation | 0.03 | 15.7 | 0.04 | 11.2 | 8# | Edge of box girder | 0.16 | 26.1 | 0.14 | 15.7 | 9# | Center of box girder | 0.09 | 39.1 | 0.08 | 19.6 | 10# | Edge of box girder | 0.01 | 39.1 | 0.08 | 26 | 3# pier | 11# | Pier foundation | 0.06 | 19.5 | 0.09 | 11.2 | 12# | Edge of box girder | 0.14 | 39.1 | 0.04 | 11.2 | 13# | Edge of box girder | 0.32 | 20 | 0.09 | 13 | 19# | Pier foundation | 0.07 | 26 | 0.04 | 39.1 | 20# | Inside of box girder | 0.1 | 39.1 | 0.19 | 19.2 |
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