A full-range fatigue life prediction model for RC beams strengthened with prestressed CFRP plates accounting for the impact of FRP debonding

被引：2

作者：

Min, Xinzhe ^{[1
]}

Zhang, Jiwen ^{[2
]}

Tu, Yongming ^{[2
,3
]}

Li, Xing ^{[2
]}

Wang, Chao ^{[3
]}

Sas, Gabriel ^{[3
]}

Elfgren, Lennart ^{[3
]}

机构：

[1] Nanjing Inst Technol, Sch Civil Engn & Architecture, Nanjing, Peoples R China

[2] Southeast Univ, Natl Engn Res Ctr Prestressing Technol, Key Lab Concrete & Prestressed Concrete Struct, Sch Civil Engn,Minist Educ, Nanjing 211189, Peoples R China

[3] Lulea Univ Technol, Dept Civil Environm & Nat Resources Engn, Div Struct & Fire Engn, SE-97187 Lulea, Sweden

来源：

ENGINEERING STRUCTURES | 2024年 / 301卷

关键词：

Fiber Reinforced Polymer (FRP); Reinforced concrete (RC) beam; Prestress; Fatigue prediction; Debonding; CUMULATIVE DAMAGE THEORY; CONCRETE BEAMS; COMPOSITE STRUCTURES; FAILURE; BEHAVIOR; METHODOLOGY; PERFORMANCE; RETROFIT; GROWTH; BOND;

D O I：

10.1016/j.engstruct.2023.117305

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

To predict the fatigue life of a reinforced concrete (RC) flexural member strengthened with externally bonded prestressed Fiber Reinforced Polymer (FRP) laminate accurately, the interaction between components with different degrees of degradation must be carefully taken into account. Furthermore, as the debonding of FRP plates is a recurrent problem, this has to be incorporated into the prediction model. In this study, a nonlinear analysis method for the entire process of fatigue damage in RC beams strengthened with prestressed Carbon Fiber Reinforced Polymer (CFRP) plates was proposed. In this model, all the components of the strengthened beam had independent fatigue degradation properties and failure criteria, and debonding growth was also explicitly considered. The comparison between the analytical and experimental results were used for model validation and good agreement was found.

引用

页数：14

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