Damage Identification Investigation of Retaining Wall Structures Based on a Virtual Impulse Response Function

Figure 3

Mode shapes of the retaining wall.

(a) 1st mode shape ( = 22.41 Hz)

(b) 3rd mode shape ( = 34.32 Hz)

(c) 4th mode shape ( = 42.14 Hz)

(d) 5th mode shape ( = 48.45 Hz)