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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 102
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Paper 10

Design of Steel and Concrete Composite Floors Accounting for Vibration Related Human Comfort: A Time History Analysis Approach

L.F. Costa Neves1, J.G. Santos da Silva2, L.R.O. de Lima2 and P.C.G. da S. Vellasco2

1INESCC, Civil Engineering Department, University of Coimbra, Portugal
2Structural Engineering Department - ESTR, State University of Rio de Janeiro - UERJ, Brazil

Full Bibliographic Reference for this paper
L.F. Costa Neves, J.G. Santos da Silva, L.R.O. de Lima, P.C.G. da S. Vellasco, "Design of Steel and Concrete Composite Floors Accounting for Vibration Related Human Comfort: A Time History Analysis Approach", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 10, 2013. doi:10.4203/ccp.102.10
Keywords: composite floors, dynamic analysis, finite element modelling, human comfort, excessive vibrations, vibration control.

The assessment of human comfort in steel and concrete floors subjected to dynamic actions is an important SLS verification in the design of most buildings. Nevertheless, some recently constructed composite floors registered a too high susceptibility to vibrations.

In this paper a finite element model is presented and described, and is used to perform a parametric study for the assessment of a light and efficient composite floor system. Different structural layouts and spans are considered, typical of current office buildings. A multi-storey, multi-bay structure is considered, and the dynamic loads are applied in single or multiple bays.

The analysis of the different models allowed the study of their dynamic behaviour. Besides the natural frequencies evaluation, a time history approach based on adequate dynamic loads was used to evaluate the floor peak accelerations. Finally, some comparisons are drawn regarding the suitability of different floor spans and their stiffness, to cope with the human comfort related SLS when the building is submitted to human induced dynamic loads.

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