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      • KCI등재

        Effect of End Distance and Bolt Number on Bearing Strength of Bolted Connections at Elevated Temperature

        Kuo-Chen Yang,Re-Jia Hsu,Chiung-Fang Hsu 한국강구조학회 2013 International Journal of Steel Structures Vol.13 No.4

        To avoid the failure at bolted connections and ensure fire resistance at elevated temperature, this study examines the effectof end distance and bolt number on the bearing behavior of bolted connection from experimental results. In addition, numericalanalysis is performed to evaluate the stress distribution at bolt hole with varied end distance at different temperature levels andto investigate the influence of stress concentration in longer joints. Based on the results of this study, it is found that the bearingstrength increases linearly with end distance up to the value of 4d. And both AISC and Eurocode 3 underestimate the bearingstregnht of bolted plates at elevated temperature. A linear function of end distance is proposed for the bearing strength of boltedconnections. The reduction factor for shear lag effect of AISC is recommended to modify the bearing strength for longerconnections. It is also suggested to increase the end distance 3d to prevent tear-out failure at elevated temperature.

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