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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| Format: | Article |
| Language: | fas |
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Iranian Society of Structrual Engineering (ISSE)
2021-08-01
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| Series: | Journal of Structural and Construction Engineering |
| Subjects: | |
| Online Access: | https://www.jsce.ir/article_94037_d5c192de596b902a9d668a0dacde6c9b.pdf |
| _version_ | 1818749607570571264 |
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| author | Fatemeh Aslani Mehdi Dehestani |
| author_facet | Fatemeh Aslani Mehdi Dehestani |
| author_sort | Fatemeh Aslani |
| collection | DOAJ |
| 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%. |
| first_indexed | 2024-12-18T04:06:28Z |
| format | Article |
| id | doaj.art-b9374e2992f7437ba5b3d03197dd21dd |
| institution | Directory Open Access Journal |
| issn | 2476-3977 2538-2616 |
| language | fas |
| last_indexed | 2024-12-18T04:06:28Z |
| publishDate | 2021-08-01 |
| publisher | Iranian Society of Structrual Engineering (ISSE) |
| record_format | Article |
| series | Journal of Structural and Construction Engineering |
| spelling | doaj.art-b9374e2992f7437ba5b3d03197dd21dd2022-12-21T21:21:35ZfasIranian Society of Structrual Engineering (ISSE)Journal of Structural and Construction Engineering2476-39772538-26162021-08-0186435810.22065/jsce.2019.195618.190894037Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded RebarsFatemeh Aslani0Mehdi Dehestani1Graduate Student, Department of Civil Engineering. Babol Noshirvani University of Technology, Babol, IranAssociate Professor, Department of Civil Engineering, Babol Noshirvani University of Technology, Babol, IranThis 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%.https://www.jsce.ir/article_94037_d5c192de596b902a9d668a0dacde6c9b.pdfrebar corrosionlife cycle costreinforced concretereliability analysisfinite element |
| spellingShingle | Fatemeh Aslani Mehdi Dehestani Structural Life-Cycle Cost Analysis for Variations of Flexural Capacity in RC Beams with Corroded Rebars Journal of Structural and Construction Engineering rebar corrosion life cycle cost reinforced concrete reliability analysis finite element |
| title | 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_short | 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 |
| topic | rebar corrosion life cycle cost reinforced concrete reliability analysis finite element |
| url | https://www.jsce.ir/article_94037_d5c192de596b902a9d668a0dacde6c9b.pdf |
| work_keys_str_mv | AT fatemehaslani structurallifecyclecostanalysisforvariationsofflexuralcapacityinrcbeamswithcorrodedrebars AT mehdidehestani structurallifecyclecostanalysisforvariationsofflexuralcapacityinrcbeamswithcorrodedrebars |