Comparison of non-linear dynamic frame response under recorded and numerically generated accelerograms

Authors

  • Oscar Möller Instituto de Mecánica Aplicada y Estructuras (IMAE), Facultad Cs.Ex., Ingeniería y Agrimensura, Universidad Nacional de Rosario, Rosario (Argentina)
  • Juan Pablo Ascheri Instituto de Mecánica Aplicada y Estructuras (IMAE), Facultad Cs.Ex., Ingeniería y Agrimensura, Universidad Nacional de Rosario, Rosario (Argentina)
  • Leandro Emanuel Nardi Instituto de Mecánica Aplicada y Estructuras (IMAE), Facultad Cs.Ex., Ingeniería y Agrimensura, Universidad Nacional de Rosario, Rosario (Argentina)

DOI:

https://doi.org/10.7764/RDLC.20.3.576

Keywords:

seismic action, scaled accelerograms, nonlinear dynamics, concrete frames

Abstract

The time history analysis of the linear and non-linear response of earthquake resistant structures is a tool increasingly used in practice and required by codes. In this paper, a set of 12 accelerograms was generated numerically with the spectral representation methodology. Another set of 15 accelerograms were selected from a database of earthquake records and scaled with a uniform factor so that the mean spectrum fits the design one. The non-linear dynamic response of two frames of different stiffness and resistance was obtained under the action of the two sets of accelerograms. The global force - displacement results showed a higher coefficient of variation for the set of recorded accelerograms, especially for the structure of lower resistance that has a strong non-linear incursion. The same tendency was obtained for the moment - curvature relationships of beam and column sections, with higher dispersions compared to the global results. In addition, the influence of the vertical acceleration component was analyzed, resulting in a higher incidence in the interior columns of the frames. 

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Published

2021-12-31

How to Cite

Möller, O., Ascheri, J. P., & Nardi, L. E. (2021). Comparison of non-linear dynamic frame response under recorded and numerically generated accelerograms. Revista De La Construcción. Journal of Construction, 20(3), 576–590. https://doi.org/10.7764/RDLC.20.3.576