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Reliability analysis of un-retrofitted and retrofitted concrete columns in Iran's building site conditions

Reliability analysis of un-retrofitted and retrofitted concrete columns in Iran's building site... The reliability analysis of built columns in Iran's building site conditions, un-retrofitted and retrofitted by CFRP, are compared with the target safety level of the Iranian Concrete Design Code and Code 345. Statistical characteristics of random variables in terms of resistance are found via field researches carried out on 60 active construction workshops and a total of 1,800 samples of concrete in Tehran and its suburbs. The results show that the CFRP materials can significantly increase the safety level of columns. Furthermore, the simulation results reveal that the safety levels of built concrete columns in Iran's building sites condition are lower than the desired level in the Iranian Concrete Design Code and Code 345. The results confirm the necessity of review on the partial safety coefficient of load and resistance in the Iranian codes. However, the results show that the target reliability index of un-retrofitted columns can significantly satisfied with the CFRP materials. Keywords: reliability analysis; concrete column; CFRP; Iran's building site conditions; Iranian concrete design code. Reference to this paper should be made as follows: Etedali, S. (2016) ` in Iran's building site conditions', Int. J. Structural Engineering, Vol. 7, No. 2, pp.180­192. Biographical notes: Sadegh Etedali http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Structural Engineering Inderscience Publishers

Reliability analysis of un-retrofitted and retrofitted concrete columns in Iran's building site conditions

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Publisher
Inderscience Publishers
Copyright
Copyright © 2016 Inderscience Enterprises Ltd.
ISSN
1758-7328
eISSN
1758-7336
DOI
10.1504/IJSTRUCTE.2016.076695
Publisher site
See Article on Publisher Site

Abstract

The reliability analysis of built columns in Iran's building site conditions, un-retrofitted and retrofitted by CFRP, are compared with the target safety level of the Iranian Concrete Design Code and Code 345. Statistical characteristics of random variables in terms of resistance are found via field researches carried out on 60 active construction workshops and a total of 1,800 samples of concrete in Tehran and its suburbs. The results show that the CFRP materials can significantly increase the safety level of columns. Furthermore, the simulation results reveal that the safety levels of built concrete columns in Iran's building sites condition are lower than the desired level in the Iranian Concrete Design Code and Code 345. The results confirm the necessity of review on the partial safety coefficient of load and resistance in the Iranian codes. However, the results show that the target reliability index of un-retrofitted columns can significantly satisfied with the CFRP materials. Keywords: reliability analysis; concrete column; CFRP; Iran's building site conditions; Iranian concrete design code. Reference to this paper should be made as follows: Etedali, S. (2016) ` in Iran's building site conditions', Int. J. Structural Engineering, Vol. 7, No. 2, pp.180­192. Biographical notes: Sadegh Etedali

Journal

International Journal of Structural EngineeringInderscience Publishers

Published: Jan 1, 2016

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