Use of fiber-reinforced plastics versus steel for shear reinforcement of concrete
Use of fiber-reinforced plastics versus steel for shear reinforcement of concrete
复制标题
使用纤维增强塑料与钢材进行混凝土抗剪加固
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
C. Burgoyne
中科院分区：
文献类型：
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作者：
T. Ibell;C. Burgoyne
使用纤维增强塑料（FRP）加固混凝土结构正受到广泛关注。人们正在尝试更好地了解含有这些纤维材料的混凝土的行为。然而，这项工作的大部分目的是尝试将现有的设计指南适应这种全新的建筑材料。本文介绍了 FRP 增强混凝土抗剪承载力的推脱试验并提出了分析技术。作为比较的基础，还提供了对含有钢箍筋的样本的测试。结果表明，虽然塑性理论可能被认为适用于钢筋情况，但 FRP 增强样本需要其他分析技术。这是因为新材料的脆性使它们容易受到局部应力集中的影响，这意味着这些材料的粘合特性尤为重要。结论是，选择适当的分析技术取决于 FRP 在混凝土结构剪切倒塌过程中能够承受的脱粘量。
The use of fiber-reinforced plastics (FRPs) for the reinforcement of concrete structures is receiving much attention. Attempts are being made to better understand the behavior of concrete containing these fibrous materials. Much of this work, however, is aimed at attempting to fit present design guidelines to this wholly new construction material. This paper presents pushoff tests and suggests analytical techniques for the shear capacity of concrete reinforced with FRPs. As a basis for comparison, tests on specimens containing steel stirrups are also presented. It is shown that while plasticity theory may be considered appropriate for use in the steel-reinforced situation, other analysis techniques are required for FRP-reinforced specimens. This is because the brittle nature of the new materials makes them susceptible to localized stress concentrations, which means that bond characteristics of these materials are particularly important. It is concluded that the choice of an appropriate analysis technique depends on the amount of debonding that FRPs are able to undergo during shear collapse of the concrete structure.