Characterization of Nonstationary Mode Interaction of Bridge by Considering Deterioration of Bearing

Figure 6

Longitudinal mode shapes from FEM analysis: (a) mode 1 (1.58 Hz; modal participating mass ratio 0.1), (b) mode 2 (4.35 Hz; modal participating mass ratio 0.17), and (c) mode 3 (5.06 Hz; modal participating mass ratio 0.18).

(a)

(b)

(c)