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Title |
Optimal Shear Strength Enhancement using Corrugated CFRP Panel for H beam with Slender Web
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Authors |
박가윤(Ga-Yoon Park) ; 성민현(Min-Hyun Seong) ; 김진국(Jin-Kook Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2024.28.5.10 |
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Keywords |
세장; 파형 CFRP; 연성; 효율; 좌굴 Slender; Corrugated CFRP; Ductility; Efficient; Buckling |
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Abstract |
In this study, FEM analysis was performed with the goal of optimal design of corrugated CFRP panels reinforcing H-shaped beams with slender plate webs. The buckling reinforcement performance of corrugated CFRP panels according to various specifications was evaluated, and in particular, a new reinforcement method was proposed by analyzing the effect of the ratio of vertical reinforcement according to the net height of the abdomen of the H-type beam on the location of the first elastic buckling mode. To minimize the amount of CFRP used, the attachment angle was set to 45 degrees. Furthermore, parameter analysis was performed according to changes in the specifications of the corrugated CFRP panel, and the buckling reinforcement performance of the corrugated CFRP panel was evaluated through the ductility factor. In addition, we attempted to use the material efficiently by simultaneously considering the maximum load and ductility factor along with the volume of the corrugated CFRP panels. It was confirmed that the model with two or three-layer CFRP laminate have a high ductility factor and efficient use of materials, and that the buckling reinforcement performance is predominantly affected by the length and height of the corrugated CFRP panel rather than the width.
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