Comprehensive Study of Moving Load Identification on Bridge Structures Using the Explicit Form of Newmark-? Method: Numerical and Experimental Studies

Bridge infrastructures are continuously subject to degradation due aging and excess loading, placing users at risk. It has now become a major concern worldwide, where the majority of bridge approaching their design life. This compels engineering community develop robust methods for continuous monitoring including loads passing over them. Here, moving load identification method based on explicit form Newmark-? Generalized Tikhonov Regularization is proposed. Most existing studies state space method, suffering from errors large discretization low sampling frequency. The accuracy proposed investigated numerically experimentally. numerical study includes single simply supported three-span bridge, experimental single-span installed by sensors. effects factors such as number sensors, sensor locations, road roughness, measurement noise, frequency vehicle speed investigated. Results indicate that not sensitive placement frequencies. Furthermore, it able identify without disruptions when through supports most fail.