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首页> 外文期刊>Journal of Composites for Construction >Experimental Tests and Design Model for RC Beams Strengthened in Shear Using the Embedded Through-Section FRP Method
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Experimental Tests and Design Model for RC Beams Strengthened in Shear Using the Embedded Through-Section FRP Method

机译：嵌入式贯通FRP法加固抗剪RC梁的试验与设计模型

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摘要

This paper presents results of an analytical and experimental investigation on RC T-beams retrofitted in shear with embedded through-section (ETS) fiber-reinforced polymer (FRP). The ETS FRP rod method is a promising method to increase the shear strength of RC beams. As this method develops, the structural behavior of RC beams strengthened with the ETS method needs to be thoroughly characterized and the influencing parameters addressed. In this research study, nine tests were performed on 4,520-mm-long RC T-beams. The parameters of this study are (1) the effect of the surface coating on the FRP bars, (2) the effect of internal transverse steel reinforcement on the FRP shear contribution, (3) the effect of FRP bar spacing, (4) the effect of FRP rod diameter, and (5) the efficiency of the embedded through-section FRP rod method. The main objective of the study is to analyze the behavior of RC T-beams strengthened in shear with ETS FRP rods by varying the parameters just mentioned. New design equations are proposed to calculate the shear contribution of FRP for beams strengthened using the ETS FRP method. The design equations are validated against results collected from the experimental part of the current research study. The proposed model shows an acceptable correlation with the experimental results.
机译：本文介绍了对钢筋混凝土T型梁进行剪力分析和实验研究的结果，这些T型梁采用埋入式截面（ETS）纤维增强聚合物（FRP）进行了剪切。 ETS FRP棒法是增加RC梁抗剪强度的一种有前途的方法。随着这种方法的发展，需要彻底表征采用ETS方法加固的RC梁的结构特性，并解决影响参数。在这项研究中，对4520毫米长的RC T型梁进行了九次测试。这项研究的参数是（1）表面涂层对FRP钢筋的影响，（2）内部横向钢筋对FRP剪切贡献的影响，（3）FRP钢筋间距的影响，（4） FRP杆直径的影响，以及（5）嵌入式截面FRP杆方法的效率。该研究的主要目的是通过改变刚才提到的参数来分析用ETS FRP杆加固的RC T梁的性能。提出了新的设计方程，以计算采用ETS FRP方法加固的梁的FRP的剪力贡献。根据从当前研究的实验部分收集的结果对设计方程进行了验证。所提出的模型与实验结果显示出可接受的相关性。

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