Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
Dynamic response analysis of truss footbridges under human load
Submission Author:
Gustavo Ayres da Silva , RS
Co-Authors:
Gustavo Ayres da Silva, Letícia Miguel
Presenter: Gustavo Ayres da Silva
doi://10.26678/ABCM.MECSOL2019.MSL19-0092
Abstract
Trusses are one of the most common types of structures employed industrially. Their applications go through bridges, pavilions, energy towers, footbridges, among others. The analysis of this type of structure presents several similarities, since they have in common the submission to both static and dynamic loads. The footbridges are characterized by being subjected to dynamic loads such as those of wind and those imposed by pedestrians. In this work the objective is to analyze a Warren and a Pratt truss footbridge subjected to the load caused by pedestrians. The models were analyzed by Newmark’s method, in order to obtain the dynamic response of the structures in terms of vertical displacement and acceleration. The natural frequencies of the structures were also obtained. As a result of this work, an algorithm for a first analysis was generated, which will be used later in the application of heuristic methods to optimize the structure and characteristics of passive energy dissipation devices. The results shown a huge precision of the developed method based on response of the structure.
Keywords
Footbridges, dynamic analysis, Newmark's method
