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首页> 外文期刊>Physical Review & Research International >Identifying the Most Effective Orientation of the CFRP Laminate for Strengthening the Tension Face of the RC T- Beams
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Identifying the Most Effective Orientation of the CFRP Laminate for Strengthening the Tension Face of the RC T- Beams

机译:确定CFRP层压板最有效的定向以增强RC T梁的受拉面

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摘要

Most of the researches on strengthening so far had been focused on rectangular reinforced concrete (RC) beams. Researches on strengthening of RC T-beams are rather limited. This study focuses on the application of carbon fibre reinforced polymer (CFRP) laminate for strengthening the tension zone of RC T-beam constrained by the presence of a stump (representative of a column) and the effect of varying the length of the strengthening laminates. Three different orientations of the CFRP laminates were tested to evaluate the best orientation. The following orientations were chosen. Orientation 1 was the full application of CFRP laminate along the centre of beam length assuming no stump was present. Orientation 2 was the full application of CFRP laminate alongside the stump parallel to beam length and Orientation 3 was the application of CFRP laminate around the stump and a continuous strip from the side of the stump to the ends of the beam. The beams were tested using the three point bending test set-up. The most suitable orientation of CFRP laminate determined was Orientation 2. The load carrying capacity had increased by about 70% compared to un-strengthened beam by strengthening both the tension and compression zone.
机译:迄今为止,大多数关于加固的研究都集中在矩形钢筋混凝土(RC)梁上。加强RC T型梁的研究非常有限。这项研究的重点是碳纤维增强聚合物(CFRP)层压板在加固RC T型梁的受拉区域(受树桩(代表柱)的约束)以及改变增强层压板长度的影响方面的应用。测试了CFRP层压板的三种不同方向,以评估最佳方向。选择了以下方向。方向1是假设不存在树桩,将CFRP层压板沿梁长度中心完全施加。方向2是在平行于梁长度的树桩旁边完全应用CFRP层压板,方向3是在树桩周围以及从树桩侧面到梁末端的连续带材周围应用CFRP层压板。使用三点弯曲测试装置对梁进行了测试。确定的CFRP层压板最合适的取向是取向2。与未加强的梁相比,通过增强拉伸和压缩区域,承载能力提高了约70%。

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