Enhancing Seismic Performance of Steel-Plated Stress-Ribbon Bridge with Tuned Mass Dampers: A Finite-Element Study

Figure 7

The modal frequency ratio (with damper/without damper) varied with mass ratio and rotational inertia ratio: (a) vertical TMD-induced variation in mode 1 and mode 3; (b) vertical TMD-induced variation in mode 2 and mode 4; (c) rotational TMD-induced variation in mode 1 and mode 3; (d) rotational TMD-induced variation in mode 2 and mode 4.

(a)

(b)

(c)

(d)