THE IMPACT OF THE PROBABILITY DISTRIBUTION FUNCTION FOR THE RANDOM VARIABLES COMPRESSIVE STRENGTH OF CONCRETE AND YIELD STRESS OF STEEL IN THE RELIABILITY ANALYSE

Authors

  • Osvaldo Luiz C. Souza University of Rio de Janeiro
  • Emil S. Sánchez Filho

DOI:

https://doi.org/10.26512/ripe.v2i23.21034

Keywords:

Index of reliability. Probability of failure. Random variables.

Abstract

The aim of this study is to evaluate the variation of the index of reliability sist of a reinforced concrete beam, strengthened with Carbon Fiber Reinforced Polymer ”“ CFRP, considering two different probability distribution functions ”“ PDF for the random variables ”“ concrete compressive strength c f and steel yield stress s f , and two different configurations of reinforcement with CFRP. In the first analyze the sist is evaluated twice, initially using the Normal PDF for the cf and the s f , as considered by the Brazilian code ”“ NBR 6118:2014, afterward the same index of reliability is obtained again, this time considering the Lognormal PDF for both materials, as considered by the Joint Committee on Structural Safety ”“ JCSS. The beam is strengthened with longitudinal CFRP reinforcement Afl and transversal CFRP reinforcement Aft. In the second analyze the efficiency of the new reinforcement is evaluated. This time the beam is strengthened with either Afl or Aft , and the probability distribution functions PDF for the concrete and steel are considered to be Lognormal For the two sets of reliability analyses the beam is subjected to a torsional moment, and the methodology and reinforcement configurations are the same developed by Silva Filho (2007).

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References

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Paliga, C. M.; Campos Filho, A.; Real, M. V.; Diniz, S. M. C. Métodos de Análise de Confiabilidade Aplicado a Viga de Concreto Armado Recuperado com PRFC, Teoria e Prática na Engenharia Civil, n.17, p.57-66, Maio, 2011.

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Silva Filho, J. J. H. Reforço à Torção de Vigas de Concreto Armado com Compósito de Fibras de Carbono. Tese de doutorado, Pontifícia Universidade Católica do Rio de Janeiro. 2007.

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Published

2017-02-08

How to Cite

Souza, O. L. C., & Sánchez Filho, E. S. (2017). THE IMPACT OF THE PROBABILITY DISTRIBUTION FUNCTION FOR THE RANDOM VARIABLES COMPRESSIVE STRENGTH OF CONCRETE AND YIELD STRESS OF STEEL IN THE RELIABILITY ANALYSE. Revista Interdisciplinar De Pesquisa Em Engenharia, 2(23), 27–39. https://doi.org/10.26512/ripe.v2i23.21034

Issue

Vol. 2 No. 23 (2016): NUMERICAL METHODS APPLIED TO STRUCTURAL DESIGN (I)

Section

Artigos

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