Abstract

This article proposes a method of evaluating the mechanical responses of damage detection in spans. This approach can monitor the stiffness degradation of structure spans over time. These monitoring processes should be conducted at different measuring points on spans, on different spans in the same or different measuring periods. The obtained results show that changes in acreage in the resonance regions of the power spectrum density offer many positive preliminary outcomes for the evaluation of the quality of projects during their operational periods. This study also shows that changes in acreage in resonance regions enable the identification of dangerous points on the different spans of a bridge.