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Integrated High-Performance Concrete Beams Reinforced with Hybrid BFRP and Steel Bars
| 题名： | Integrated High-Performance Concrete Beams Reinforced with Hybrid BFRP and Steel Bars |
| 正文语种： | eng |
| 作者： | Wang, Xin;Liu, Shui;Shi, Yuwei;Wu, Zhishen;He, Weidong |
| 作者单位： | Southeast Univ Key Lab Concrete & Prestressed Concrete Struct Minist Educ Nanjing 210096 Peoples R China|Southeast Univ Natl & Local Unified Engn Res Ctr Basalt Fiber Pr Nanjing 210096 Peoples R China;Southeast Univ Key Lab Concrete & Prestressed Concrete Struct Minist Educ Nanjing 210096 Peoples R China;Southeast Univ Key Lab Concrete & Prestressed Concrete Struct Minist Educ Nanjing 210096 Peoples R China;Southeast Univ Key Lab Concrete & Prestressed Concrete Struct Minist Educ Nanjing 210096 Peoples R China|Southeast Univ Natl & Local Unified Engn Res Ctr Basalt Fiber Pr Nanjing 210096 Peoples R China;Southeast Univ Key Lab Concrete & Prestressed Concrete Struct Minist Educ Nanjing 210096 Peoples R China |
| 关键词： | Basalt fiber-reinforced polymer (BFRP) bar;Concrete beam;Hybrid reinforcement;Flexural behavior |
| 摘要： | The flexural behavior of concrete beams reinforced with a combination of basalt fiber-reinforced polymer (BFRP) bars and steel bars is investigated herein. Five hybrid BFRP and steel bar RC beams, one pure BFRP-RC beam, and one pure steel-RC beam, were designed based on the principle of equal stiffness and subject to four-point bending tests. The main study parameters included the bar type, ratio of the steel reinforcement area to the BFRP reinforcement area (A(s)/A(f)), and BFRP bar diameter. The results of the four-point bending tests showed that the hybrid-RC beams had a lower ultimate load and larger ultimate deflection with the increase in A(s)/A(f). The tested beams had similar stiffnesses before yielding; the five hybrid-RC beams exhibited an obvious postyielding stiffness as well, which contributes to a higher reserve in both strength and deformability. Comparisons between the experimental values and predicted values of ultimate capacity, deflection, and crack width using design models are also presented herein. (C) 2021 American Society of Civil Engineers. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 1 |
| 页码： | 04021235.1-04021235.12 |
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