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 Buckling tests on H-section members in coupled buckling area reinforced by CFRP sheets
Tác giả hoặc Nhóm tác giả: Shunta SAKURAI, Kazuo OHGAKI, Takeshi MIYASHITA, Masafumi HATTORI, Genta GOTO, Yuya HIDEKUMA, Ngoc Vinh PHAM
Nơi đăng: Japanese Journal of JSCE; Số: 80(14);Từ->đến trang: 23-14007;Năm: 2024
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
Adding stiffening steel plates with high strength bolts is generally used to reinforce the load-bearing capacity of steel truss bridges. In contrast, this method has the following problems: the bolt holes cause cross-sectional defects in the base member, and the steel plates must be pre-fabricated and carried to narrow areas before being bolted. A reinforcement method using carbon fiber reinforced polymer (CFRP), which is stronger, more elastic, lighter, and less corrosive than steel, has been proposed as a potential solution to these problems. If a reinforcement method using CFRP could be applied, it would be a more rational method than reinforcement using steel plates. In this study, mainly for seismic reinforcement, CFRP sheets were attached to long column specimens that imitated the H-section diagonal members of steel truss bridges to examine the reinforcement effect on the coupled buckling of whole buckling and local buckling through compression loading tests.
ABSTRACT
Adding stiffening steel plates with high strength bolts is generally used to reinforce the load-bearing capacity of steel truss bridges. In contrast, this method has the following problems: the bolt holes cause cross-sectional defects in the base member, and the steel plates must be pre-fabricated and carried to narrow areas before being bolted. A reinforcement method using carbon fiber reinforced polymer (CFRP), which is stronger, more elastic, lighter, and less corrosive than steel, has been proposed as a potential solution to these problems. If a reinforcement method using CFRP could be applied, it would be a more rational method than reinforcement using steel plates. In this study, mainly for seismic reinforcement, CFRP sheets were attached to long column specimens that imitated the H-section diagonal members of steel truss bridges to examine the reinforcement effect on the coupled buckling of whole buckling and local buckling through compression loading tests.
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