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Repair Method and Finite Element Analysis for Corroded Gusset Plate Connections Bonded to CFRP Sheets
| 题名： | Repair Method and Finite Element Analysis for Corroded Gusset Plate Connections Bonded to CFRP Sheets |
| 正文语种： | eng |
| 作者： | Ngoc Vinh Pham;Miyashita, Takeshi;Ohgaki, Kazuo;Hidekuma, Yuya;Harada, Takuya |
| 作者单位： | Danang Univ Sci & Technol Fac Civil Engn 54 Nguyen Luong Bang St Danang City Vietnam|Nagaoka Univ Technol Dept Civil & Environm Engn 1603-1 Kamitomioka Nagaoka Niigata 9402188 Japan;Nagaoka Univ Technol Dept Civil & Environm Engn 1603-1 Kamitomioka Nagaoka Niigata 9402188 Japan;Inst Technologists Dept Bldg Technologists 333 Maeya Saitama 3610038 Japan;Nippon Steel Chem & Mat Co Chuo Ku 13-1 Nihonbashi 1 Chome Tokyo 1030027 Japan;Nippon Expressway Res Inst Co 1-4-1 Tadao Machida Tokyo 1948508 Japan |
| 摘要： | In steel truss bridges, severe damage due to corrosion at gusset plate connections has been widely reported. This study investigated the effectiveness of a repair method using carbon-fiber-reinforced plastic (CFRP) sheets for corroded gusset plate connections. Loading tests were conducted with a model approximately 50% of the size of actual gusset plate connections and a corrosion level of approximately 50% of the gusset plate thickness. Further, loading tests were carried out by varying the area, direction, and location of the bonded CFRP sheets. Results showed that the proposed repair method recovered the load-carrying capacity and improved the deformation performance of the corroded gusset plate connections. Three-dimensional finite element (FE) analyses, which considered the nonlinear properties of materials, anisotropic performance of CFRP sheets, and bond-slip model of the polyurea putty layer inserted between the corroded gusset plate and CFRP sheets, were implemented to validate the experimental results. By varying the bond-slip properties of the polyurea putty layer within the fluctuation range of measured data, this study accurately reproduced the experimental results and clarified the polyurea putty layer's influence on the load-carrying capacity, deformation performance, and failure behavior of the corroded gusset plate connections bonded to CFRP sheets. DOI: 10.1061/(ASCE)ST.1943-541X.0002862. (c) 2020 American Society of Civil Engineers. |
| 出版年： | 2021 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 147 |
| 期： | 1 |
| 页码： | 04020310.1-04020310.22 |
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