This video is prepared in 2011 by Middle East Technical University Civil Engineering Department undergraduate students Makbule Ilgac, Gizem Can, and Ezgi Eroglu as part of undergraduate assistantship project with Prof. Kemal Onder Cetin.
A 12 meters long steel beam-concrete slab has been shaken under six different earthquakes and harmonic loadings. Tests are done with and without a car on top of the bridge. The six different harmonic motions applied to the system to identify the resonant frequencies of the bridge. It has been observed that the 1 ton vehicle has reduced the seismic response by 20% for the 20 tons of superstructure. Bearings have been used to isolate the superstructure from the substructure.