Memorias de investigación
Communications at congresses:
Modelling of composite box girder bridges with integrated elastomers and TMDs
Year:2019

Research Areas
  • Civil engineering and architecture

Information
Abstract
Floor vibrations caused by human activities is an issue to consider mainly caused by new construction tendencies towards longer, lighter and less damped composite floor systems. Furthermore, the removal of full height partitions and heavy furniture elements have also contributed to reduce both, mass and damping, increasing the potential for annoying floor vibration. As a result, Vibration Serviceability Limit State has become the main limit state to overcome at the design stage. The response of dynamically loaded structures is especially dependable on structures dissipation capacity, commonly modelled as structural damping. This inverse relation between damping and dynamic response behaves exponentially. That is why increasing the structural damping in low damped structures from the design stage, is the most efficient way to face the vibration issue. This is the main idea behind the concept of Damping-Based Design. In this paper, a highly-damped composite floor system is achieved through constraining an elastomer sandwiched layer between the concrete slab and the steel beam. Therefore, additional energy dissipation is provided through viscoelastic shear deformation between concrete and steel, increasing the overall damping of the structure, and thus, enhancing its dynamic response. In this context, the authors have developed a simplified and engineering-based FE model, in a fully-extended and commercial software for structural analysis as SOFiSTiK. Hence, a new simple engineering approach has been developed for easily assessing the enhanced performance of these systems, contrasting the limited results provided by other authors about this topic.
International
Si
Congress
5th International Conference on Mechanical Models in Structural Engineering CMMoST 2019
960
Place
Alicante
Reviewers
Si
ISBN/ISSN
978-84-17924-22-5
Start Date
23/10/2019
End Date
25/10/2019
From page
487
To page
500
Proceedings of the CMMoST 2019
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Ingeniería Estructural
  • Departamento: Mecánica de Medios Continuos y Teoría de Estructuras