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Relationships between interfacial shear stresses and moment capacities of RC beams strengthened with various types of FRP sheets

机译：各种类型FRP片加固RC梁的界面剪应力与弯矩承载力的关系

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The objective of this study is to evaluate moment capacity based on interfacial shear stress of reinforced concrete (RC) beams strengthened with various types of fiber reinforced polymer (FRP) sheets. Toward this goal, RC beams strengthened with taper layered carbon FRP (CFRP) and hybrid FRP sheets were fabricated and subjected to four-point loading. From the experiments, interfacial shear stresses along the length of the CFRP sheets and maximum moments were obtained. The experimental results clearly showed that interfacial shear stress had significant influence on maximum moment of RC beams strengthened with FRP sheets. The relationship between interfacial shear stress and maximum moment capacity was considered for the moment capacity of RC beams with taper layered FRP sheets, and the numerical results showed good agreements with experimental results. In addition, finite element (FE) analytical studies were performed and the results validated relationship between interfacial shear stresses and maximum moment capacities. (C) 2015 Elsevier Ltd. All rights reserved.
机译：这项研究的目的是基于各种类型的纤维增强聚合物（FRP）片增强的钢筋混凝土（RC）梁的界面剪切应力，评估弯矩承载力。为了实现这一目标，制造了用锥形层状碳纤维增强塑料（CFRP）和混合纤维增强塑料板加固的RC梁，并进行四点加载。从实验中，获得了沿着CFRP板的长度和最大弯矩的界面剪切应力。实验结果清楚地表明，界面剪应力对FRP加固的RC梁的最大弯矩有很大影响。锥形层状FRP板RC梁的弯矩承载力考虑了界面剪应力与最大弯矩承载力之间的关系，数值结果与实验结果吻合良好。此外，进行了有限元（FE）分析研究，结果验证了界面剪切应力与最大弯矩承载力之间的关系。 （C）2015 Elsevier Ltd.保留所有权利。

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