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Behaviour of a FRP anchor for seismic strengthening of clay brick masonry walls

机译:FRP锚杆用于粘土砖砌体墙抗震加固的性能

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摘要

Fibre reinforced polymer (FRP) anchors made from rolled or folded fibres have been shown to be an effective technology for delaying or even preventing premature debonding failure in concrete structures strengthened with externally bonded FRP. It would naturally be expected that the use of FRP anchors can improve the earthquakeresistance of FRP strengthened structures by increasing its loading capacity and ductility especially the latter. This study explores the application of FRP anchors in seismic strengthening of clay brick walls. One unique feature of such a system is that the brick unit has smaller dimensions compared to common concrete specimens. This paper reports an experimental pull out study of these FRP anchors. Test parameters included anchor construction, the diameter of the anchor, and the size of predrilled holes in clay brick. The experimental results indicate that FRP anchors can be designed to achieve high loading capacities and hence can be effectively used to prevent or delay FRP debonding failure. The results also indicate that the geometry of the anchor system has a significant effect on its loading capacity.
机译:由轧制或折叠纤维制成的纤维增强聚合物(FRP)锚固已被证明是一种有效的技术,可以延迟甚至防止用外部粘结FRP加固的混凝土结构中的过早脱胶失败。人们自然希望使用FRP锚可以通过增加FRP加固结构的承载能力和延展性(尤其是后者)来提高FRP加固结构的抗震性。本研究探讨了玻璃钢锚在黏土砖墙抗震加固中的应用。这种系统的一个独特特征是,与普通混凝土标本相比,砖块具有较小的尺寸。本文报告了对这些FRP锚的实验性拉拔研究。测试参数包括锚固结构,锚固直径以及粘土砖中预钻孔的尺寸。实验结果表明,FRP锚可以设计成具有较高的承载能力,因此可以有效地用于防止或延迟FRP脱胶失败。结果还表明,锚固系统的几何形状对其承载能力有重大影响。

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