Flexural behavior of hybrid FRP/steel reinforced concrete beams
Flexural behavior of hybrid FRP/steel reinforced concrete beams
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DOI：
10.1016/j.compstruct.2015.03.073
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发表时间：
2015-10-01
影响因子：
6.3
通讯作者：
Koroglu, Mehmet Alpaslan
中科院分区：
文献类型：
--
作者：
Kara, Ilker Fatih;Ashour, Ashraf F.;Koroglu, Mehmet Alpaslan
本文提出了一种估算纤维增强复合材料（FRP）/钢混杂配筋混凝土梁曲率、挠度和抗弯承载力的数值方法。首先进行截面分析以预测弯矩 - 曲率关系，进而计算梁的挠度和抗弯承载力。根据FRP筋的用量，确定了不同的破坏模式，即FRP筋的受拉断裂以及钢筋屈服前后的混凝土压碎。与其他地方所做试验的理论和实验结果对比表明，所提出的数值方法能够准确预测FRP/钢混杂配筋混凝土梁的抗弯承载力、曲率和挠度。数值结果还表明，在FRP配筋混凝土梁中加入钢筋可提高梁的延性和刚度。（C）2015爱思唯尔有限公司。保留所有权利。
This paper presents a numerical method for estimating the curvature, deflection and moment capacity of hybrid FRP/steel reinforced concrete beams. A sectional analysis is first carried out to predict the moment-curvature relationship from which beam deflection and moment capacity are then calculated. Based on the amount of FRP bars, different failure modes were identified, namely tensile rupture of FRP bars and concrete crushing before or after yielding of steel reinforcement. Comparisons between theoretical and experimental results of tests conducted elsewhere show that the proposed numerical technique can accurately predict moment capacity, curvature and deflection of hybrid FRP/steel reinforced concrete beams. The numerical results also indicated that beam ductility and stiffness are improved when steel reinforcement is added to FRP reinforced concrete beams. (C) 2015 Elsevier Ltd. All rights reserved,