Topographical Surveys of the Pedestrian Bridges of the Sabaneta and La Estrella Metro Stations, Using 3d Laser Technology and Subsequent Numerical Modeling With Finite Elements (Fem), for the Control of Environmental Vibrations Through Tuned Mass Dam

Objective: The objective of this study is to investigate the numerical modeling of TMD tuned mass dampers coupled to pedestrian bridges, with the aim of attenuating ambient vertical vibrations produced by pedestrians and thus improving user comfort on pedestrian bridges. Theoretical Framework: This topic presents some of the research carried out successfully for the mitigation of vertical vibrations in pedestrian bridges using tuned mass dampers. Method: The methodology adopted for this research includes a review of the state of the art where the same research problem and given solutions are addressed. Subsequently, field work and numerical modeling of the pedestrian bridge, ending with a possible solution of a proposed TMD. Results and Discussion: The results obtained revealed that by varying the parameters of different models it was possible to obtain the best TMD that attenuated vertical vibrations in pedestrian bridges. Research Implications: The implications of this research can be applied in the field of civil engineering, specifically in slender pedestrian bridges that have problems with excessive vertical vibrations. The above is in order to mitigate vibrations and improve the service conditions of the pedestrian bridge. Originality/Value: This study contributes to the literature by proposing control devices, in two specific case studies for pedestrian bridges in Medellín metro stations. It is a practical contribution that seeks to improve the performance and operating conditions of pedestrian bridges.