Numerical Method for Creep Analysis of Strengthened Fatigue-Damaged Concrete Beams
Fatigue-damaged concrete improves the load-bearing capacity of components by increasing the cross section. However, the creep performance of damaged components after the repair has received less attention. Thus, this study establishes a constitutive creep model of strengthened fatigue-damaged concre...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/4/968 |
| _version_ | 1797606137101549568 |
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| author | Yunfei Ding Yan Fang Weiliang Jin Jun Zhang Bixiong Li Jianghong Mao |
| author_facet | Yunfei Ding Yan Fang Weiliang Jin Jun Zhang Bixiong Li Jianghong Mao |
| author_sort | Yunfei Ding |
| collection | DOAJ |
| description | Fatigue-damaged concrete improves the load-bearing capacity of components by increasing the cross section. However, the creep performance of damaged components after the repair has received less attention. Thus, this study establishes a constitutive creep model of strengthened fatigue-damaged concrete on the basis of damage mechanics and numerically simulates the strengthened component. The accuracy of the proposed model is verified by conducting creep tests on fatigue-damaged concrete beams. According to the numerical simulation results, increasing the section height profoundly affects the ability to control their creep deflection. The incremental creep deflection of the beams with a strengthened section height of 50, 100, and 150 mm loaded for 365 days decreased by 0.107, 0.228, and 0.326 mm, respectively, compared with the unstrengthened damaged beam. Moreover, this reinforcement method excellently controls the deflection of the damaged components under a negative bending moment. The model can forecast the creep deformation of undamaged components or damaged components after being strengthened, which facilitates structural maintenance and decision-making about reinforcement. |
| first_indexed | 2024-03-11T05:11:02Z |
| format | Article |
| id | doaj.art-65a074422b7b45c3af1e36ea3d70ecf0 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T05:11:02Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-65a074422b7b45c3af1e36ea3d70ecf02023-11-17T18:35:39ZengMDPI AGBuildings2075-53092023-04-0113496810.3390/buildings13040968Numerical Method for Creep Analysis of Strengthened Fatigue-Damaged Concrete BeamsYunfei Ding0Yan Fang1Weiliang Jin2Jun Zhang3Bixiong Li4Jianghong Mao5College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaInstitute of Structural Engineering, Zhejiang University, Hangzhou 310085, ChinaInstitute of Structural Engineering, Zhejiang University, Hangzhou 310085, ChinaCollege of Civil Engineering and Architecture, Ningbo Tech University, Ningbo 315100, ChinaCollege of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaCollege of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaFatigue-damaged concrete improves the load-bearing capacity of components by increasing the cross section. However, the creep performance of damaged components after the repair has received less attention. Thus, this study establishes a constitutive creep model of strengthened fatigue-damaged concrete on the basis of damage mechanics and numerically simulates the strengthened component. The accuracy of the proposed model is verified by conducting creep tests on fatigue-damaged concrete beams. According to the numerical simulation results, increasing the section height profoundly affects the ability to control their creep deflection. The incremental creep deflection of the beams with a strengthened section height of 50, 100, and 150 mm loaded for 365 days decreased by 0.107, 0.228, and 0.326 mm, respectively, compared with the unstrengthened damaged beam. Moreover, this reinforcement method excellently controls the deflection of the damaged components under a negative bending moment. The model can forecast the creep deformation of undamaged components or damaged components after being strengthened, which facilitates structural maintenance and decision-making about reinforcement.https://www.mdpi.com/2075-5309/13/4/968structural reinforcementfatiguecreepdeflectionnumerical simulation |
| spellingShingle | Yunfei Ding Yan Fang Weiliang Jin Jun Zhang Bixiong Li Jianghong Mao Numerical Method for Creep Analysis of Strengthened Fatigue-Damaged Concrete Beams Buildings structural reinforcement fatigue creep deflection numerical simulation |
| title | Numerical Method for Creep Analysis of Strengthened Fatigue-Damaged Concrete Beams |
| title_full | Numerical Method for Creep Analysis of Strengthened Fatigue-Damaged Concrete Beams |
| title_fullStr | Numerical Method for Creep Analysis of Strengthened Fatigue-Damaged Concrete Beams |
| title_full_unstemmed | Numerical Method for Creep Analysis of Strengthened Fatigue-Damaged Concrete Beams |
| title_short | Numerical Method for Creep Analysis of Strengthened Fatigue-Damaged Concrete Beams |
| title_sort | numerical method for creep analysis of strengthened fatigue damaged concrete beams |
| topic | structural reinforcement fatigue creep deflection numerical simulation |
| url | https://www.mdpi.com/2075-5309/13/4/968 |
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