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Seismic response of masonry infilled RC frames: practice-oriented models and open issues

  • Received : 2013.01.31
  • Accepted : 2014.01.13
  • Published : 2014.04.30

Abstract

Although it is widely accepted that the interaction -between masonry infill and structural members significantly affects the seismic response of reinforced concrete (RC) frames, this interaction is generally neglected in current design-oriented seismic analyses of structures. Moreover, the role of masonry infill is expected to be even more relevant in the case of existing frames designed only for gravitational loads, as infill walls can significantly modify both lateral strength and stiffness. However, the additional contribution to both strength and stiffness is often coupled to a modification of the global collapse mechanisms possibly resulting in brittle failure modes, generally related to irregular distributions of masonry walls throughout the frame. As a matter of principle, accurate modelling of masonry infill should be at least carried out by adopting nonlinear 2D elements. However, several practice-oriented proposals are currently available for modelling masonry infill through equivalent (nonlinear) strut elements. The present paper firstly outlines some of the well-established models currently available in the scientific literature for modelling infill panels in seismic analyses of RC frames. Then, a parametric analysis is carried out in order to demonstrate the consequences of considering such models in nonlinear static and dynamic analyses of existing RC structures. Two bay-frames with two-, three- and four-storeys are considered for performing nonlinear analyses aimed at investigating some critical aspects of modelling masonry infill and their effects on the structural response. Particularly, sensitivity analyses about specific parameters involved in the definition of the equivalent strut models, such as the constitutive force-displacement law of the panel, are proposed.

Keywords

References

  1. Ali, S.S. and Page, A.W. (1998), "Finite element model for masonry subjected to concentrated loads", J. Struct. Eng., 114(8), 1761-1784.
  2. American Society of Civil Engineers (ASCE) (2006), Seismic rehabilitation of existing buildings (ASCE/SEI 41), Reston, Virginia.
  3. Asteris, P.G. (2003), "Lateral stiffness of brick masonry infilled plane frames", J. Struct. Eng., 129(8), 1071-1079.
  4. Biondi, S., Colangelo, F. and Nuti, C. (2000), "La risposta sismica di telai con tamponature murarie", CNR - Gruppo Nazionale per la Difesa dai Terremoti, Roma.
  5. CEB Task Group III/6 (1996), RC frames under earthquake loading: state of the art report, Bulletin 231, Thomas Telford Publishing.
  6. Di Sarno, L., Acanfora, M., Manfredi, G. and Pecora, R. (2008), "Vibration control of structures under environmental loading", Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China.
  7. Dolsek, M. and Fajfar, P. (2004), "Inelastic spectra for infilled reinforced concrete frame", Earthq. Eng. Struct. Dyn., 33, 1395-1416. https://doi.org/10.1002/eqe.410
  8. Dolsek, M. and Fajfar, P. (2005), "Simplified non-linear seismic analysis of infilled reinforced concrete frames", Earthq. Eng. Struct. Dyn., 34, 49-66. https://doi.org/10.1002/eqe.411
  9. Dolsek, M. and Fajfar, P. (2008), "The effect of masonry infills on the seismic response of a four storey reinforced concrete frame - a deterministic assessment", Eng. Struct., 30(11), 1991-2001. https://doi.org/10.1016/j.engstruct.2008.01.001
  10. Durrani, A.J. and Luo, Y.H. (1994), "Seismic retrofit of flat-slab buildings with masonry infills. Report NCEER-94-0004", Proc. from the NCEER Workshop on Seismic Response of Masonry Infills, 1-8.
  11. EN 1998-1 (2005), Eurocode 8: Design of structures for earthquake resistance. Part 1: General rules, seismic actions and rules for buildings.
  12. EN 1998-3 (2005), Eurocode 8: Design of structures for earthquake resistance. Part 3: Assessment and retrofitting of buildings.
  13. Fajfar, P. (1999), "Capacity spectrum method based on inelastic demand spectra", Earthq. Eng. Struct. Dyn., 28, 979-993. https://doi.org/10.1002/(SICI)1096-9845(199909)28:9<979::AID-EQE850>3.0.CO;2-1
  14. Fajfar, P. (2000), "A nonlinear analysis method for performance based seismic design", Earthq. Spectra, 16(3), 573-592. https://doi.org/10.1193/1.1586128
  15. Fardis, M.N. (1997), "Experimental and numerical investigation on the seismic response of RC infilled frames and recommendations for code provisions", Laboratorio Nacional de Engenharia Civil, Lisboa, Report 6 of ECOEST-PREC8 Project.
  16. Fiore, A., Netti, A. and Monaco, P. (2012), "The influence of masonry infill on the seismic behaviour of RC frame buildings", Eng. Struct., 44, 133-145. https://doi.org/10.1016/j.engstruct.2012.05.023
  17. Hao, H., Ma, G. and Lu, Y. (2002), "Damage assessment of masonry infilled RC frames subject to blasting induced ground excitations", Eng. Struct., 22, 799-809.
  18. Holmes, M. (1961), "Steel frames with brickwork and concrete infilling", ICE Proc., 19(4), 473-478. https://doi.org/10.1680/iicep.1961.11305
  19. Iervolino, I., Galasso, C. and Cosenza, E. (2010), "REXEL: computer aided selection for code-based seismic structural analysis", Bull. Earthq. Eng., 8, 339-362. https://doi.org/10.1007/s10518-009-9146-1
  20. Kakaletsis, D.J. and Karayannis, C.G. (2008), "Influence of masonry strength and openings on infilled R/C frames under cyclic loading", J. Earthq. Eng., 12(2), 197-221. https://doi.org/10.1080/13632460701299138
  21. Klingner, R.E. and Bertero, V.V. (1978), "Earthquake resistance of infilled frames", J. Struct. Div., 104(ST6), 973-989.
  22. Koutromanos, I., Stavridis, A., Benson Shing, P. and Willam, K. (2011), "Numerical modelling of masonryinfilled RC frames subjected to seismic loads", Comput. Struct., 89, 1026-1037.
  23. Kuang, J.S. and Yuen, Y.P. (2010), "Effect of out-of-plane loading on in-plane behaviour of unreinforced infilled RC frames", Proceedings of the International Conference on Computing in Civil and Building Engoneering, Nottingham University Press, 1-6.
  24. Liauw, T.C. and Kwan, K.H. (1984), "Nonlinear behaviour of non-integral infilled frames", Comp. Struct., 18, 551-560. https://doi.org/10.1016/0045-7949(84)90070-1
  25. Lima, C., Martinelli, E. and Faella, C. (2012), "Capacity model for shear strength of exterior joints in RC frames: experimental assessment and recalibration", Bull. Earthq. Eng., 10(3), 985-1007.
  26. Lima, C., Martinelli, E. and Faella, C. (2012), "Capacity model for shear strength of exterior joints in RC frames: state-of-the-art and synoptic examination", Bull. Earthq. Eng., 10(3), 967-983.
  27. Mainstone, R.J. (1971), "On the stiffnesses and strengths of infilled frames", ICE Proc. Suppl., 4, 57-90.
  28. Mazzoni, S., McKenna, F., Scott, M.H., Fenves, G.L. et al. (2007), "OpenSEES Open System for Earthquake Simulation, Command Language Manual", s.l.:Pacific Earthquake Engineering Research Center.
  29. Ministerial Decree (2008), "New Italian Code for Construction", Italian Ministry of Public Work, Ordinary Supplement n.30 to the Italian Official Journal of 04 February. (in Italian)
  30. Page, A.W. (1978), "Finite element model for masonry", J. Struct. Div. ASCE, 104(8), 1267-1285.
  31. Panagiotakos, T.B. and Fardis, M.N. (1994), "Proposed nonlinear strut model for infill panels", 1st Year Progress Report of HCM-PREC8 Project, University of Patras.
  32. Panagiotakos, T.B. and Fardis, M.N. (1996), "Seismic response of infilled RC frames structures", 11th World Conference on Earthquake Engineering, Paper 225.
  33. Papia, M. and Cavaleri, L. (2001), "Effetto irrigidente dei tamponamenti nei telai in c.a.", Atti della $2^{\circ}$ conferenza plenaria "La sicurezza delle strutture in calcestruzzo armato sotto azioni sismiche con riferimento ai criteri progettuali di resistenza al collasso e di limitazione del danno dell'Eurocodice 8", Firenze, Ed. Politecnico di Milano, 85-94.
  34. Paulay, T. and Priestley, M.J.N. (1992), Seismic design of reinforced concrete and masonry buildings, John Wiley & Sons, New York.
  35. Penelis, G.G. and Kappos, A.J. (1997), Earthquake-resistant concrete structures, London, E & FN Spon.
  36. Pinto, P.E., Giannini, R. and Franchin, P. (2004), Seismic reliability analysis of structures, Pavia, IUSS Press.
  37. Ricci, P., De Luca, F. and Verderame, G.M. (2011), "6th April 2009 L'Aquila earthquake, Italy: reinforced concrete building performance", Bull. Earthq. Eng., 9, 285-305. https://doi.org/10.1007/s10518-010-9204-8
  38. Smith, B.S. (1966), "Behaviour of square infilled frames", J. Struct. Div., 92(1), 381-403.
  39. Uva, G., Raffaele, D., Porco, F. and Fiore, A. (2012), "On the role of equivalent strut models in the seismic assessment of infilled RC buildings", Eng. Struct., 42, 83-94. https://doi.org/10.1016/j.engstruct.2012.04.005
  40. Verderame, G.M., De Luca, F., Ricci, P. and Manfredi, G. (2011), "Preliminary analysis of soft-storey mechanism after the 2009 L'Aquila earthquake", Earthq. Eng. Struct. Dyn., 40, 925-944. https://doi.org/10.1002/eqe.1069
  41. Yuen, Y.P. and Kuang, J.S. (2012), "Nonlinear response and failure mechanism of infilled RC frame structures under biaxial seismic excitation", Proceedings of the 15th World Conference on Earthquake Engineering, Lisboa, Portugal.
  42. Zarnic, R. and Gostic, S. (1997), "Masonry infilled frames as an effective structural subassemblage", Seismic design methodologies for the next generation of codes, Balkema (Rotterdam), Fajfar & Krawinkler editors, 335-346.

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