TUNED MASS DAMPER DESIGN FOR BRIDGE

Abstract

Introduction:
The deterioration and collapse of structures that are subjected to periodic loads, such as railway bridges, cause economic damage to the country. A solution to the above is the placement of Tuned Mass Dampers.
Objective:
To design the main components and parameters of Tuned Mass Dampers.
Materials and Methods:
The mass, damping and stiffness of the Tuned Mass Dampers are determined from the dynamic characteristics of the bridge.
Results and Discussion:
The graphs are obtained with the mass, damping and stiffness values of the Tuned Mass Damper, which ensure the reduction of the amplitude of the oscillations in the bridge. The displacements of the bridge before and after placing the Tuned Mass Damper are also obtained. The stability of three variants of springs is sized and checked, a Germanmade damper is selected and a Tuned Mass Damper model is proposed with the final arrangement of its  elements.
Conclusions:
A significant reduction in the amplitude of the oscillations of the "Case Study" bridge is achieved by incorporating a Tuned Mass Damper with the calculated parameters. The stiffness obtained is very high for the design of the springs, so it was decided to distribute this parameter in three variants of Tuned Mass Damper. A model is exposed where the arrangement of its components is displayed.