An inhomogeneous inelastic beam-like model for dynamic analyses of multistorey buildings

I. Fiore; A. Greco; S. Caddemi; I Calio

doi:10.21741/9781644902431-65

An inhomogeneous inelastic beam-like model for dynamic analyses of multistorey buildings

Ilaria FIORE, Annalisa GRECO, Salvatore CADDEMI Ivo CALIO’

Abstract. This study presents an original inelastic beam-like model for the simulation of the nonlinear dynamic behaviour of three-dimensional buildings subjected to earthquake loadings. The proposed model is defined as a step-wise shear only cantilever beam, whose segments have the same mechanical properties of the corresponding inter-storeys of the building. The inter-storey constitutive laws are calibrated by means of the results of a static nonlinear analysis performed on the 3D FEM model of the building. An inverse nonlinear static identification procedure allows obtaining an inelastic beam-like model equivalent to the more demanding 3D FEM model, related to a specific direction and under a precise distribution of horizontal loadings. Dynamic nonlinear analyses performed on this simplified model allow a drastic reduction of the required computational effort and time with respect to the more demanding 3D FEM model. The reliability of the proposed beam-like model is validated through numerical applications on an irregular multi-storey RC frame representative of residential buildings in Catania designed to resist only gravity loadings.

Keywords
Inelastic Dynamic Behaviour, Beam-Like Model, Shear Deformability

Published online 3/17/2022, 6 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Ilaria FIORE, Annalisa GRECO, Salvatore CADDEMI Ivo CALIO’, An inhomogeneous inelastic beam-like model for dynamic analyses of multistorey buildings, Materials Research Proceedings, Vol. 26, pp 399-404, 2023

DOI: https://doi.org/10.21741/9781644902431-65

The article was published as article 65 of the book Theoretical and Applied Mechanics

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] E. Miranda, “Approximate seismic lateral deformation demands in multistory buildings.,” Journal of Structural Engineering ASCE, pp. 417-425, 1999. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:4(417)
[2] K. Zalka, “Maximum deflection of asymmetric wall-frame buildings under horizontal load,” Periodica Polytechnica: Civil Engineering, pp. 387-396, 2014. https://doi.org/10.3311/PPci.7084
[3] G. Potza and L. Kollar, “Analysis of building structures by replacement sandwich beams,” International Journal of Solids and Structures, pp. 535-553, 2003. https://doi.org/10.1016/S0020-7683(02)00622-4
[4] R. Rahgozar, A. Ahmadi and Y. Sharifi, “A simple mathematical model for approximate analysis of tall buildings,” Applied Mathematical Modelling, pp. 2437-2451, 2010. https://doi.org/10.1016/j.apm.2009.11.009
[5] M. Malekinejad and R. Rahgozar, “An analytical model for dynamic response analysis of tubular tall buildings,” The Structural Design of Tall and Special Buildings, pp. 67-80, 2014. https://doi.org/10.1002/tal.1039
[6] G. Piccardo, F. Tubino and A. Luongo, “Equivalent Timoshenko linear beam model for the static and dynamic analysis of tower buildings,” Applied Mathematical Modelling, vol. 71, pp. 77-95, 2019. https://doi.org/10.1016/j.apm.2019.02.005
[7] A. Greco, I. Fiore, G. Occhipinti, S. Caddemi, D. Spina and I. Caliò, “An Equivalent Non-Uniform Beam-Like Model for Dynamic Analysis of Multi-Storey Irregular Buildings,” Applied Sciences, vol. 10, p. 3212, 2020. https://doi.org/10.3390/app10093212
[8] J. S. Kuang and K. Huang, “Simplified multi-degree-of-freedom model for estimation of seismic response of regular wall-frame structures,” The structural design of tall and special buildings, vol. 20, pp. 418-432, 2011. https://doi.org/10.1002/tal.538
[9] L. Ragni, A. Zona and A. Dall’Asta, “Analytical expressions for preliminary design of dissipative bracing systems in steel frames,” Journl of Constructional Steel Frames , vol. 67, no. 102-113, 2011. https://doi.org/10.1016/j.jcsr.2010.07.006
[10] I. Fiore, An equivalent non-uniform inelastic beam-like model for the seismic vulnerability assessment of buildings, Catania: PhD thesis, University of Catania, 2022.