ABSTRACT
One of the parameters that plays an important role in assessment of existing bridges is the dynamic amplification factor (DAF). Although many studies have already been performed in this field, it is still unclear if DAF values calculated from displacements are larger than those calculated from strains. An extensive experimental investigation was carried out on existing reinforced concrete highway bridge in Slovenia, in order to clarify the difference of DAFs obtained from strain and displacement measurements. Additionally, the effect of signal smoothing on the correlation between them was studied. The structural system of the test bridge represents solid slab superstructure with both-side overhangs, simply supported by walls that are rigidly connected by deep foundations. 12 strain sensors and 4 inductive displacement sensors with amplifiers were installed for the purposes of this study. All of the sensors were located at the midspan of the considered bridge.
