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 Influence of Washers on Mechanical Behavior of Single Lap Connection in GFRP Plates using Tapping Screws
Tác giả hoặc Nhóm tác giả: Nguyen Ngoc Duong, Phan Viet Nhut, Chito SATAKE, Yuya INOUE, and Yukihiro MATSUMOTO
Nơi đăng: Japan Society of Civil Engineers; Số: September 2017;Từ->đến trang: 1-2;Năm: 2017
Lĩnh vực: Kỹ thuật; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT
ABSTRACT
Fiber reinforced polymer (FRP) has currently been widely used in the fields of vehicles, aircraft, because they have many good characteristics when comparison with other materials such as light weight, high strength, high corrosion resistance, good freedom of molding, etc. In addition, these characteristics lead to high seismic resistance, long life, and ease in construction; therefore, FRPs have also been used in architecture and civil engineering field. For example, in the architecture sector, it has been used in the large space of the roof frames, indoor swimming pools, etc. In the civil engineering sector, it has been used in pedestrian bridge, floodgate, etc. At present, because the connection behavior of FRP connection is relatively complex, it is impossible to construct freely like wood, concrete, steel. If that problem is solved, FRP will be a material which can change significantly the construction structure. Unlike steel, the connection of FRP is difficult to welding, so mechanical connection, adhesive connection, or both have been used. However, the mechanical properties of connection, which are indispensable for constructing structures by FRP material, are not clarified sufficiently. Therefore, accumulation of research results to improve design method are necessary. There have been many researches about mechanical connection for FRP by steel bolts/rivet. This connection requires drilling to create the holes in FRP material first and bearing strength is lower than the material strength due to the influence of connection clearance. Hence, solving this problem to improve initial stiffness of connection and bearing strength by tapping screw should be considered carefully. Furthermore, the screw has a drill at the tip, so there don't need hole processing, increasing construction speed. In this study, we shows on the screw connection strength and influence of washers using in tapping screw on connection strength in FRP plates by experimental single-lapped tensile-shear loading test.
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