Damage Detection of Bridge Structure Based on SVM

Table 2

The amplitude ratio of the pier.

Working condition	Pier vertex	Pier midpoint	Pier subpoint
Original state	2.04	1.52	1
Digging 1 m	2.03	1.51	1
Digging 2 m	2.02	1.50	1
Digging 3 m	2.01	1.49	1