Table 5: Modal identification of Baicheng Footbridge by EFDD.

 ModeWirelessTethered Frequency difference (%) Damping difference (%)Descriptions
of mode shape
MAC
(Hz) (%) (Hz) (%)

12.2910.6202.2720.740.8416.2Deck 1st vertical and radial bending0.999
24.0670.884.0580.950.227.4Deck bending and bridge tower bending
35.3230.295.3200.330.0612.1Deck 2nd vertical bending0.998
47.4460.897.4450.710.0125.4Deck 2nd radial bending0.989
59.4400.889.4350.940.056.4Deck 3rd vertical and radial bending0.999