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Dynamic analysis of buildings considering the effect of masonry infills in the global structural stiffness

  • de Souza Bastos, Leonardo (Civil Engineering Postgraduate Programme (PGECIV), Faculty of Engineering (FEN), State University of Rio de Janeiro (UERJ)) ;
  • Guerrero, Carolina Andrea Sanchez (Civil Engineering Postgraduate Programme (PGECIV), Faculty of Engineering (FEN), State University of Rio de Janeiro (UERJ)) ;
  • Barile, Alan (Civil Engineering Postgraduate Programme (PGECIV), Faculty of Engineering (FEN), State University of Rio de Janeiro (UERJ)) ;
  • da Silva, Jose Guilherme Santos (Civil Engineering Postgraduate Programme (PGECIV), Faculty of Engineering (FEN), State University of Rio de Janeiro (UERJ))
  • Received : 2018.10.11
  • Accepted : 2018.12.13
  • Published : 2019.04.25

Abstract

This research work presents a study that aims to assess the dynamic structural behaviour and also investigate the human comfort levels of a reinforced concrete building, when subjected to nondeterministic wind dynamic loadings, considering the effect of masonry infills on the global stiffness of the structural model. In general, the masonry fills most of the empty areas within the structural frames of the buildings. Although these masonry infills present structural stiffness, the common practice of engineers is to adopt them as static loads, disregarding the effect of the masonry infills on the global stiffness of the structural system. This way, in this study a numerical model based on sixteen-storey reinforced concrete building with 48 m high and dimensions of $14.20m{\times}15m$ was analysed. This way, static, modal and dynamic analyses were carried out in order to simulate the structural model based on two different strategies: no masonry infills and masonry infills simulated by shell finite elements. In this investigation, the wind action is considered as a nondeterministic process with unstable properties and also random characteristics. The fluctuating parcel of the wind is decomposed into a finite number of harmonic functions proportional to the structure resonant frequency with phase angles randomly determined. The nondeterministic dynamic analysis clearly demonstrates the relevance of a more realistic numerical modelling of the masonry infills, due to the modifications on the global structural stiffness of the building. The maximum displacements and peak accelerations values were reduced when the effect of the masonry infills (structural stiffness) were considered in the dynamic analysis. Finally, it can be concluded that the human comfort evaluation of the sixteen-storey reinforced concrete building can be altered in a favourable way to design.

Keywords

Acknowledgement

Supported by : Brazilian Science Foundation's CAPES, CNPq e FAPERJ

References

  1. Albayrak, U., Unluogl, E. and Dogan, M. (2017), "An overview of the modelling of infill walls in framed structures", Int. J. Struct. Civil Eng. Res., 6(1), 24-29. https://doi.org/10.18178/ijscer.6.1.24-29
  2. Architectural Institute of Japan, AIJ-GEH (2004), Guidelines for the Evaluation of Habitability to Building Vibration, Japan.
  3. Bastos, L.S. and Santos Da Silva, J.G. (2017), "Numerical modelling and evaluation of structural nondeterministic dynamic response of buildings considering the effect of soil-structure interaction", Proceedings of the 37th Iberian Latin-American Congress on Computational Methods in Engineering, Florianopolis/SC, Brazil.
  4. Blessmann, J. (1995), O Vento Na Engenharia Estrutural, Portuguese Edition, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre/RS, Brazil.
  5. Borges, A.C.L., Fonte, A.C.C., Fonte, F.L.F. and Cavalcanti, G.A.D. (2009), "Structural behaviour analysis of a slender 42-story building", Proceedings of the Anais $51^{\circ}$ Congresso Brasileiro do Concreto, Recife/PE, Brazil.
  6. Chavez, E.S. (2006), "Structural analysis of tall building submitted to fluctuant pressures induced by action of the wind", M.Sc. Dissertation, Federal University of Minas Gerais (UFMG), Belo Horizonte/MG, Brazil.
  7. De Sa, L.D.S. (2018), "Study of the static and dynamic structural behaviour and human comfort analysis of buildings considering the effect of the masonry infills", M.Sc. Dissertation, Civil Engineering Postgraduate Programme (PGECIV), State University of Rio de Janeiro (UERJ), Rio de Janeiro/RJ, Brazil.
  8. Fernandez, I. and Parnas, V.E. (2017), "Elements for numerical simulation of wind time series", Revista Ingenieria de Construccion, 32(2), 85-92.
  9. Franco, M. and Medeiros, S.R.P. (2011), O Metodo do Vento Sintetico-Novas Consideracoes, TQS News, August.
  10. Hendry, A.W., Sinha, B.P. and Davies, S.R. (1997), Design of Masonry Structures, Ed. E & FN Spon, London, U.K.
  11. Hu, R. (2015), "Experimental study of the effect of interfacial gaps on the in-plane behaviour of masonry infilled RC frames", Ph.D. Dissertation, Dalhousie University, Halifax, Nova Scotia, Canada.
  12. International Standard ISO 10137 (2007), Bases for Design of Structures-Serviceability of Buildings and Walkways Against Vibrations.
  13. Kim, J.Y., Yu, E., Kim, D.Y. and Kim, S. (2009), "Calibration of analytical models to assess wind-induced acceleration responses of tall buildings in serviceability level", Eng. Struct., 31(9), 2086-2096. https://doi.org/10.1016/j.engstruct.2009.03.010
  14. Lourenco, P.J.B.B. (1996), "Computational strategies for masonry structures", Ph.D. Dissertation, Delft University of Technology, Stevinweg, the Netherlands.
  15. Moreira, T.V. (2002), "Sensitivity dynamic analysis of building with slender structures", M.Sc. Dissertation, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro/RJ, Brazil.
  16. Nascimento, A.C.R. (2015), "Numerical-experimental study of the influence of masonry infill on stiffness of reinforced concrete buildings", M.Sc. Dissertation, Federal University of Para (UFPA), Belem/PA, Brazil.
  17. NBR 6123 (1988), Forcas Devidas ao Vento em Edificacoes, Associacao Brasileira de Normas Tecnicas (ABNT), Rio de Janeiro/RJ, Brazil.
  18. Obata, S.H. (2009), "Vento sintetico e a simulacao de Monte Carlo-uma forma de considerar a caracteristica aleatoria do carregamento dos ventos em estruturas", Exact., 7(1), 77-85.
  19. Souza, P.V.A. (2014), "Effect of masonry infills on the dynamic characteristics of reinforced concrete buildings", M.Sc. Dissertation, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro/RJ, Brazil.
  20. Steeves, R. (2017), "In-plane behavior of masonry infilled RC frames with interfacial gaps subjected to quasi-static loading", Ph.D. Dissertation, Dalhousie University, Halifax, Nova Scotia, Canada.
  21. Timuragaoglu, M.O., Livaoglu, R. and Doganun, A. (2015), "Investigation of the infill wall effect on the dynamic behaviour of RC frames", Proceedings of the 6th International Operational Modal Analysis Conference, Gijon, Spain.
  22. Zahir, N. and Garg, V. (2017), "Static and dynamic analysis of R.C building frame with infill", Int. Res. J. Eng. Technol., 4(7), 383-403.