Influence of Corrosion on Dynamic Behavior of Pedestrian Steel Bridges—Case Study

Corrosion directly affects the structural stiffness of a steel element, reducing thickness, thus inertia, due to gradual deterioration material. Quickly identifying corrosion damage structure is challenge in coastal environments since progresses rapidly, and traditional methods inspection diagnosis are time-consuming costly. This an important issue; therefore, characterization level represents key element making decisions regarding maintenance or integrity. work estimates relationship between structures their dynamic parameters using ambient vibration records. It comprises behavior state three full-scale pedestrian bridges with similar geometry, material, configuration characteristics but significant differences degree deterioration. The were instrumented piezoelectric sensors connected portable data acquisition system; recorded information was analyzed optimization algorithms Python based on power spectral density (PSD) vibrations each bridge. obtained related determine incidence behavior, involving changes its mass.