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首页> 外文期刊>Structural concrete >Numerical study of structural behavior of fiber-reinforced polymer-strengthened reinforced concrete beams with bond-slip effect under cyclic loading
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Numerical study of structural behavior of fiber-reinforced polymer-strengthened reinforced concrete beams with bond-slip effect under cyclic loading

机译：循环荷载作用下纤维增强聚合物增强钢筋混凝土梁粘结滑移结构性状的数值研究

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摘要

Two simple finite element models denoted as FEM-B and FEM-BC are developed in this paper to investigate the structural behavior of fiber-reinforced polymer (FRP) strengthened reinforced concrete (RC) beams under static and cyclic loading. First, the FEM-B is developed for analysis of FRP-strengthened RC beams under static loading and the bond-slip effect between FRP, adhesive and concrete is included. Then FEM-BC is developed based on FEM-B for analysis of structural behavior of FRP-strengthened RC beams under cyclic loading, and degradations of material properties of concrete, steel reinforcement, and FRP due to cyclic loading are taken into account. The developed FEMs are validated against experimental results and demonstrated to be effective for structural analysis of FRP-strengthened RC beams. Furthermore, parametric studies are carried out to learn the effects of types, thickness, and length of FRP on the structural behavior of FRP-strengthened RC beams based on the FEM-BC model. The research findings are summarized finally.
机译：本文开发了两个简单的有限元模型，分别表示为FEM-B和FEM-BC，以研究纤维增强聚合物（FRP）增强钢筋混凝土（RC）梁在静态和循环荷载下的结构性能。首先，开发了FEM-B，用于在静态载荷下分析FRP加固的RC梁，并包括FRP，粘合剂和混凝土之间的粘结滑移效应。然后，基于FEM-B，开发了FEM-BC，用于分析FRP加固的RC梁在循环荷载作用下的结构性能，并考虑了由于循环荷载引起的混凝土，钢筋和FRP的材料性能下降。所开发的有限元模型已针对实验结果进行了验证，并被证明对FRP加固的RC梁的结构分析有效。此外，基于FEM-BC模型，进行了参数研究，以了解FRP的类型，厚度和长度对FRP加固的RC梁的结构性能的影响。最后对研究成果进行总结。

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