Vibrations of a Bridge with Random Structural Irregularities Under Random Traffic Load and a Probabilistic Structural Degradation Assessment Approach

Abstract Purpose Dynamic loads like traffic make bridges vibrate. Especially for with a large span, vibrations have significant impact on their structural stability and durability. Due to material defects, fatigue other influences, bridge typically has random irregularities, which affect its dynamic response. In this work, an effective mathematical approach is presented study the response of model single span slender beam bridge, in presence irregularities. addition, assess degradation presented. Methods The modelled as Euler-Bernoulli irregularities are considered by fields bending stiffness mass per unit length. As illustrative example, road investigated randomly crossing vehicles. After Monte Carlo experiments without mechanical stresses determined analysed. Results shows statistically variations most dominant frequencies Conclusion influence status may not be negligible. probability serious can assessed means binomial logistic model. developed enables better understanding bridges, taking into account traffic.