This paper presents a new vibration control of bridges under moving loads using improved tuned mass damper(TMD). Although the conventional TMD has excellent performance in the control of steady-state displacements, it has limitations in the suppression of transient displacements. This paper proposes a TMD system combined with king-post to efficiently control both steady-state and transient vibration parts of displacements.
To show the efficiency of the proposed TMD, a simple span bridge is considered. The midpoint vertical responses are investigated before and after the installation of proposed TMD. The results of the proposed TMD are also compared with those of the conventional TMD and the king-post system.
