Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars

This paper presents an approach for evaluating structural resistance degenerate due to reinforcement corrosion and for predicting future structural performance during the service life of the deteriorating reinforced concrete beams due to corrosive environments. a finite element method is adopted for...

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Autores principales:	Fatemeh Aslani, Mehdi Dehestani
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	rebar corrosion life cycle cost reinforced concrete reliability analysis finite element Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/b9374e2992f7437ba5b3d03197dd21dd
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spelling	oai:doaj.org-article:b9374e2992f7437ba5b3d03197dd21dd2021-11-08T15:55:01ZStructural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars2476-39772538-261610.22065/jsce.2019.195618.1908https://doaj.org/article/b9374e2992f7437ba5b3d03197dd21dd2021-08-01T00:00:00Zhttps://www.jsce.ir/article_94037_d5c192de596b902a9d668a0dacde6c9b.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616This paper presents an approach for evaluating structural resistance degenerate due to reinforcement corrosion and for predicting future structural performance during the service life of the deteriorating reinforced concrete beams due to corrosive environments. a finite element method is adopted for envisioning the nonlinear flexural behavior of intact and corroded RC beams based on Ultimate strength design method and Load and resistance factor design method approaching this aim, the impact of corrosion of embedded reinforcing element on the flexural capacity of corroded reinforced concrete structures is estimated. A stochastic degeneration model based on gamma process is utilized to assess the probability of failure of structural flexural capacity over the lifetime. Optimal repair planning and maintenance strategies throughout the service life are circumscribed by evaluating the cost for maintenance and the risk of structural failure. Based on the conclusions from the numerical model including two RC beams subjected to reinforcement corrosion the following results are drawn: The permissible deterioration limits that describe the thresholds of the deterioration for the safety and repair requirement, held major effects on the probability of failure. The results from the worked example show that the proposed method can afford reliable predictions for structural strength deterioration and efficiently implement a risk-cost-benefit optimized repair procedure through the service life of the structure affected by bar corrosion. The lifetime distribution increases 5years for LRFD method and 3.5 years for USTD method while allowable limits enlargement 10%. The lifetime distribution extends 5years for LRFD method and 3.5 years for USTD method while allowable limits increase 10%.Fatemeh AslaniMehdi DehestaniIranian Society of Structrual Engineering (ISSE)articlerebar corrosionlife cycle costreinforced concretereliability analysisfinite elementBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 8, Iss 6, Pp 43-58 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	rebar corrosion life cycle cost reinforced concrete reliability analysis finite element Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	rebar corrosion life cycle cost reinforced concrete reliability analysis finite element Bridge engineering TG1-470 Building construction TH1-9745 Fatemeh Aslani Mehdi Dehestani Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars
description	This paper presents an approach for evaluating structural resistance degenerate due to reinforcement corrosion and for predicting future structural performance during the service life of the deteriorating reinforced concrete beams due to corrosive environments. a finite element method is adopted for envisioning the nonlinear flexural behavior of intact and corroded RC beams based on Ultimate strength design method and Load and resistance factor design method approaching this aim, the impact of corrosion of embedded reinforcing element on the flexural capacity of corroded reinforced concrete structures is estimated. A stochastic degeneration model based on gamma process is utilized to assess the probability of failure of structural flexural capacity over the lifetime. Optimal repair planning and maintenance strategies throughout the service life are circumscribed by evaluating the cost for maintenance and the risk of structural failure. Based on the conclusions from the numerical model including two RC beams subjected to reinforcement corrosion the following results are drawn: The permissible deterioration limits that describe the thresholds of the deterioration for the safety and repair requirement, held major effects on the probability of failure. The results from the worked example show that the proposed method can afford reliable predictions for structural strength deterioration and efficiently implement a risk-cost-benefit optimized repair procedure through the service life of the structure affected by bar corrosion. The lifetime distribution increases 5years for LRFD method and 3.5 years for USTD method while allowable limits enlargement 10%. The lifetime distribution extends 5years for LRFD method and 3.5 years for USTD method while allowable limits increase 10%.
format	article
author	Fatemeh Aslani Mehdi Dehestani
author_facet	Fatemeh Aslani Mehdi Dehestani
author_sort	Fatemeh Aslani
title	Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars
title_short	Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars
title_full	Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars
title_fullStr	Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars
title_full_unstemmed	Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars
title_sort	structural life-cycle cost analysis for variations of flexural capacity in rc beams with corroded rebars
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/b9374e2992f7437ba5b3d03197dd21dd
work_keys_str_mv	AT fatemehaslani structurallifecyclecostanalysisforvariationsofflexuralcapacityinrcbeamswithcorrodedrebars AT mehdidehestani structurallifecyclecostanalysisforvariationsofflexuralcapacityinrcbeamswithcorrodedrebars
_version_	1718441601850671104

Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars

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