Seismic Damage Detection of Moment Resisting Frame Structures Using Time-Frequency Features

Figure 20

Log-log plot of the box counting of the TFF of the structure under PGA = 715 gal El Centro ground motion (Case 5). (a) Story 1, (b) Story 2, (c) Story 3, (d) Story 4, (e) Story 5, (f) Story 6, (g) Story 7, (h) Story 10, and (i) Story 15.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)