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首页> 美国卫生研究院文献>Materials >Prediction of Deflection of Reinforced Concrete Beams Strengthened with Fiber Reinforced Polymer
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Prediction of Deflection of Reinforced Concrete Beams Strengthened with Fiber Reinforced Polymer

机译：纤维增强聚合物加固钢筋混凝土梁的挠度预测

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摘要

The article analyses the calculation of the deflection of reinforced concrete beams strengthened with fiber reinforced polymer. This paper specifically focuses on estimating deflection when the yielding of reinforcement is reached. The article proposes a simple method for calculating deflection that was compared with the experimentally predicted deflection. The carried out comparison has showed that the proposed method is suitable not only for the strengthened beams but also for the reinforced concrete beams with a varying reinforcement ratio. The suggested calculation method is based on the effective moment of inertia, such as the one introduced in the ACI Committee 318 Building Code Requirement for Structural Concrete (ACI318). The development of deflection was divided into three stages, and equations for the effective moment of inertia were proposed considering separate stages. In addition, the put forward equations were modified attaching additional relative coefficients evaluating a change in the depth of the neutral axis.
机译：本文分析了纤维增强聚合物加固的钢筋混凝土梁的挠度计算。本文专门着重于估计达到钢筋屈服时的挠度。文章提出了一种简单的计算挠度的方法，并将其与实验预测的挠度进行了比较。进行的比较表明，所提出的方法不仅适用于加筋梁，而且还适用于变比的钢筋混凝土梁。建议的计算方法基于有效惯性矩，例如ACI委员会318《建筑混凝土结构规范要求》（ACI318）中介绍的方法。挠度的发展分为三个阶段，并提出了考虑不同阶段的有效惯性矩方程。此外，对提出的方程式进行了修改，附加了评估中性轴深度变化的附加相对系数。

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