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The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads

Simplicity and computational efficiency of the lumped plasticity model have made it a popular approach for analyzing structures. However, it has been shown by researchers that the accuracy of the lumped plasticity model for representing the inelastic behavior of reinforced concrete (RC) structures n...

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Main Authors: Vafaei, M., Alih, S. C., Fallah, A.
Format: Article
Published: Wiley-Blackwell 2020
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/86073/
https://dx.doi.org/10.1002/suco.201800357
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spelling my.utm.860732020-10-13T01:08:03Z http://eprints.utm.my/id/eprint/86073/ The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads Vafaei, M. Alih, S. C. Fallah, A. TA Engineering (General). Civil engineering (General) Simplicity and computational efficiency of the lumped plasticity model have made it a popular approach for analyzing structures. However, it has been shown by researchers that the accuracy of the lumped plasticity model for representing the inelastic behavior of reinforced concrete (RC) structures needs further investigations. Two full-scale RC frames with different shear spans were constructed and subjected to the vertical load through their beam. Finite element (FE) models of the tested specimens were established in SAP2000 software, and their results were compared with the experimental tests. The effects of using different plastic hinge lengths, initial effective stiffness, and locations of plastic hinges were investigated. It was observed that regardless of the selected plastic hinge lengths, the established FE models estimated the yield and ultimate loads of the frames accurately. However, they did not estimate accurately the vertical displacements corresponding to the yield and ultimate loads. Results also indicated that the obtained yield and ultimate loads from the established FE models were significantly influenced by the selected locations for plastic hinges. Moreover, at the ultimate load of frames the estimated damage level to the mid-span of beams by FE models was lower than the results of experimental tests. Wiley-Blackwell 2020-02 Article PeerReviewed Vafaei, M. and Alih, S. C. and Fallah, A. (2020) The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads. Structural Concrete, 21 (1). pp. 65-80. ISSN 1464-4177 https://dx.doi.org/10.1002/suco.201800357 DOI:10.1002/suco.201800357
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Vafaei, M.
Alih, S. C.
Fallah, A.
The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads
description Simplicity and computational efficiency of the lumped plasticity model have made it a popular approach for analyzing structures. However, it has been shown by researchers that the accuracy of the lumped plasticity model for representing the inelastic behavior of reinforced concrete (RC) structures needs further investigations. Two full-scale RC frames with different shear spans were constructed and subjected to the vertical load through their beam. Finite element (FE) models of the tested specimens were established in SAP2000 software, and their results were compared with the experimental tests. The effects of using different plastic hinge lengths, initial effective stiffness, and locations of plastic hinges were investigated. It was observed that regardless of the selected plastic hinge lengths, the established FE models estimated the yield and ultimate loads of the frames accurately. However, they did not estimate accurately the vertical displacements corresponding to the yield and ultimate loads. Results also indicated that the obtained yield and ultimate loads from the established FE models were significantly influenced by the selected locations for plastic hinges. Moreover, at the ultimate load of frames the estimated damage level to the mid-span of beams by FE models was lower than the results of experimental tests.
format Article
author Vafaei, M.
Alih, S. C.
Fallah, A.
author_facet Vafaei, M.
Alih, S. C.
Fallah, A.
author_sort Vafaei, M.
title The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads
title_short The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads
title_full The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads
title_fullStr The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads
title_full_unstemmed The accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads
title_sort accuracy of the lumped plasticity model for estimating nonlinear behavior of reinforced concrete frames under gradually increasing vertical loads
publisher Wiley-Blackwell
publishDate 2020
url http://eprints.utm.my/id/eprint/86073/
https://dx.doi.org/10.1002/suco.201800357
_version_ 1681489474343665664
score 13.211869

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