A Study on the dynamic characteristics of bridges during the crushing action

This study conducts a field experiment on bridge deck pavement and evaluates the rigidity and safety of different bridge designs during construction using a vibration roller. The experiment included simply supported and continuous beams with concrete hollow-slab beam and T-beam cross-sectional designs. The study monitored the deflection and vibration acceleration of the bridges and measured the main beams' flexural deformation. Band-pass filtering was applied to the initial dynamic signals collected during the experiment to remove clutter signals outside of the working frequency range of the vibratory roller. The simulation results showed that the maximum displacements of the bridge structures under the vibration of the roller were less than L/600, and the maximum and minimum deflection amplitudes of the bridges under vibration were 6.24 and 1.31 mm, respectively. The bridge structures were not deformed to a degree that posed a threat to their structural safety. The results of this study can provide insights into the rigidity and operational health of bridge structures during pavement construction, contributing to improved bridge design and construction practices