Fatigue Damage Mitigation for Welded Beam-to-Column Connections in Steel High-Rise Buildings Using Passive Vibration Control

To investigate the use of vibration control systems in fatigue damage mitigation for welded beam-to-column connections steel high-rise buildings, cases both a single connection under constant amplitude cyclic loading and multi-connections building stochastic wind, with without fluid viscous damper (VFD) tuned mass (TMD), are discussed respectively. The finite element analysis assessment conducted so that effect, effect technical parameters conditions high-cycle low-cycle all discussed. results show VFD TMD effective local along structural displacement cases. generally has better than it starts to take instantly external loading, but causes phase difference responses, while situation is quite opposite. stress similar synchronous trends damping can be designed based on either them. should smaller exponent larger coefficient braced installation form, using optimal parameters. optimized layout plan VFDs placed between two large relative velocity higher floors these near targeted connection. negative mainly stems from insufficient lateral support force direct may result limited support.