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Seismic Evaluation of FRP Strengthened RC Buildings Subjected to Near-Fault Ground Motions using Artificial Neural Networks

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Authors Seismic Evaluation of FRP Strengthened RC Buildings Subjected to Near-Fault Ground Motions using Artificial Neural Networks

  Alireza Mortezaei - Assistant Professor, Civil Engineering Department, Engineering Faculty, Semnan Branch, Islamic

Abstract:

Recordings from recent earthquakes have provided evidence that ground motions in the near field of a rupturing fault differ from ordinary ground motions, as they can contain a large energy, or directivity pulse. This pulse can cause considerable damage during an earthquake, especially to structures with natural periods close to those of the pulse. Failures of modern engineered structures observed within the near-fault region in recent earthquakes have revealed the vulnerability of existing RC buildings against pulse-type ground motions. This may be due to the fact that these modern structures had been designed primarily using the design spectra of available standards, which have been developed using stochastic processes with relatively long duration that characterizes more distant ground motions. Many recently designed and constructed buildings may therefore require strengthening in order to perform well when subjected to near-fault ground motions. Fibre Reinforced Polymers are considered to be a viable alternative, due to their relatively easy and quick installation, low life cycle costs and zero maintenance requirements. The objective of this paper is to investigate the adequacy of Artificial Neural Networks (ANN) to determine the three dimensional dynamic response of FRP strengthened RC buildings under the near-fault ground motions. For this purpose, one ANN model is proposed to estimate the base shear force, base bending moments and roof displacement of buildings in two directions. A training set of 168 and a validation set of 21 buildings are produced from FEA analysis results of the dynamic response of RC buildings under the near-fault earthquakes. It is demonstrated that the neural network based approach is highly successful in determining the response

Keywords:

Seismic evaluation, FRP, neural network, near-fault ground motion

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COI code: ICCT04_126

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Mortezaei, Alireza, 2012, Seismic Evaluation of FRP Strengthened RC Buildings Subjected to Near-Fault Ground Motions using Artificial Neural Networks, 4th International Conference on Seismic Retrofitting (Earthquake Engineering and new Technology on Retrofitting), تبريز, انستيتو مقاوم سازي لرزه اي ايران, https://www.civilica.com/Paper-ICCT04-ICCT04_126.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Mortezaei, Alireza, 2012)
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The University/Research Center Information:
Type: Azad University
Paper No.: 3105
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