详情

原文传递 Load-Carrying Capacity of Corroded Gusset Plate Connection and Its Repair Using CFRP Sheets

题名：	Load-Carrying Capacity of Corroded Gusset Plate Connection and Its Repair Using CFRP Sheets
正文语种：	eng
作者：	Pham, Ngoc Vinh;Miyashita, Takeshi;Ohgaki, Kazuo;Okuyama, Yusuke;Hidekuma, Yuya;Harada, Takuya
作者单位：	Univ Danang Univ Sci & Technol Fac Civil Engn 54 Nguyen Luong Bang St Danang City 550000 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;Nagano Coll Natl Inst Technol Nagano 3818550 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：	Recently, several events involving the corrosion-induced damage of gusset plate connections of steel truss bridges have been reported worldwide. In this study, the remaining load-carrying capacity of a corroded gusset plate connection was evaluated through loading tests and finite element method (FEM) analyses using a model approximately 50% of the size of an actual gusset plate connection. Two potential forms of corrosion, that is, weld and cross-sectional corrosion, on the gusset plate were considered in order to investigate the reduction in the load-carrying capacity. Then, parametric FEM analyses were conducted to determine the effect of the corrosion level on the remaining load-carrying capacity of a specimen model and a full-scale model of an actual connection. The loading tests and parametric FEM analyses indicated that with increases in the dimensions of the corroded sections, the load-carrying capacity of the gusset plate connections exhibited nearly similar linear decreases. Furthermore, the effectiveness of a repair method for the corroded gusset plate connection using carbon fiber-reinforced plastic (CFRP) sheets was investigated. The loading tests were conducted considering the area, direction, and location of the bonded CFRP sheets. As a result, this study proposed an appropriate repair method using CFRP sheets that could help recover the load-carrying capacity and improve the deformation performance of corroded gusset plate connections. (C) 2021 American Society of Civil Engineers.
出版年：	2021
期刊名称：	Journal of structural engineering
卷：	147
期：	6