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Strength Behavior of High-tension Bolted Connections for I-shaped Plate Girder
수타진,황원섭,함준수 한국복합신소재구조학회 2018 복합신소재구조학회논문집 Vol.9 No.4
I-shaped plate girders are frequently used for the construction of the large span structures, especially large span bridges and railway bridges as they can be built up by (riveting or bolted connection) and welding the steel plates to get the desired sizes of the designers. Riveting or bolting type has many advantages such as avoiding both of the strength reducing problem during the construction and high maintenance cost after the construction as it is chosen over the welding type. However, such riveting has the problem of slipping around the bolted connection when the load is applied to the girder, which might cause strength reducing problems. Therefore, in this study, the slip behaviors of the bolted connection of the I-shaped plate girder, beside it’s strength behaviors were investigated through the FEM analysis program. Moreover, various effects of the vertical stiffeners’ interval on the strength of the girders were also examined along with this study.
부식된 고장력볼트 이음부의 잔존 내하력에 대한 실험적 연구
함준수,황원섭,수타진,박성준 한국복합신소재구조학회 2017 복합신소재구조학회 학술발표회 Vol.2017 No.04
Corrosion is one of the most typical aging phenomena associated with long-term use of steel structures. Corrosion of high-tension bolted connections causes problems such as reduction of thickness of member and relaxation of axial force of high-tension bolt, thereby reducing load-carrying capacity of high-tension bolted connections. In this study, three specimens were subjected to natural corrosion in order to evaluate the residual load-carrying capacity of high-tension bolted connections where corrosion occurred. Two specimens were newly fabricated for comparison with the corroded specimens. In addition, the static bending test was performed to compare and investigate the behavior characteristics of the high-tension bolted connections and the final failure modes. The residual load-carrying capacity of the corroded high-tension bolted connections was evaluated.