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首页> 外文期刊>Journal of Composites for Construction >FRP-Reinforced Concrete Beams: Unified Approach Based on IC Theory
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FRP-Reinforced Concrete Beams: Unified Approach Based on IC Theory

机译:FRP筋混凝土梁:基于IC理论的统一方法

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摘要

In general, steel-reinforced concrete involves a ductile steel material and a very strong and ductile bond between the steel reinforcement and concrete, so that debonding rarely governs the design. In contrast, fiber-reinforced polymer (FRP) reinforcement is a brittle material with a weak and brittle bond, making debonding a major issue. Consequently, there has been an extensive amount of research on FRP debonding and in particular intermediate crack (IC) debonding. This paper shows that the very good research by the FRP research community on the mechanics of IC debonding can be applied to a wide range of apparently disparate reinforced concrete behaviors to produce a unified approach. Hence, a single mechanism, or unified approach, based on IC debonding is proposed in this paper for dealing with moment rotation, tension stiffening and deflections, member ductility and moment redistribution, shear capacity, confinement, and fiber concrete for FRP RC beams.
机译:通常,钢筋混凝土涉及易延展的钢材,并且在钢筋和混凝土之间具有非常牢固且易延展的粘结,因此脱胶很少控制设计。相比之下,纤维增强聚合物(FRP)增强材料是一种脆性材料,其结合力弱而脆,这使得剥离成为主要问题。因此,人们对FRP脱胶,特别是中间裂纹(IC)脱胶进行了大量研究。本文表明,FRP研究界对IC脱粘机理的出色研究可以应用于各种表面明显不同的钢筋混凝土行为,从而产生统一的方法。因此,本文提出了一种基于IC脱胶的单一机制或统一方法,用于处理FRP RC梁的弯矩旋转,抗拉刚度和挠度,构件延性和弯矩重新分布,抗剪承载力,约束以及纤维混凝土。

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