4.1 Article

Probabilistic seismic response transformation factors between SDOF and MDOF systems using artificial neural networks

Journal

JOURNAL OF VIBROENGINEERING
Volume 18, Issue 4, Pages 2248-2262

Publisher

JVE INT LTD
DOI: 10.21595/jve.2016.16506

Keywords

artificial neural network; probabilistic seismic response transformation factors; single- and multi-degree-of-freedom systems; steel frames

Funding

  1. Universidad Nacional Autonoma de Mexico [DGAPA-PAPIIT-IN102114]
  2. Consejo Nacional de Ciencia y Tecnologia (CONACYT) [CB-2011-01-167419]
  3. Universidad Autonoma de Sinaloa [PROFAPI 2014/032]

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An approach to obtain with acceptable accuracy probabilistic response transformation factors by training an artificial neural network (ANN) model is presented. The transformation factors are defined as the ratio of the seismic response of multi-degree-of-freedom structures and their equivalent single-degree-of-freedom systems, associated with a given annual exceedance rate. The approach is used for predicting the seismic response of steel framed buildings. Equations useful to obtain probabilistic response transformation factors for maximum ductility and inter-story drift, as functions of their mean annual rate of exceedance, and of the fundamental vibration period of the structure, are proposed. It is shown that artificial neural networks are a useful tool for reliability-based seismic design procedures of framed buildings and for the improvement toward the next generation of earthquake design methodologies based on structural reliability.

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