Fire Safety Science Digital Archive

This study narrows the application temperature field of aluminum alloy to 350°C or less, and examines the transformation of strength properties in web-bolted moment joints. The following results are obtained by it is clarified experimentally and analytically that the bending strength of web bolted moment joints of aluminum alloy beam exposed to fire. 1)The maximum bearing moment of the beam with the web-bolted moment joint is almost equal to the moment of a beam without a joint. 2)The effct of prying action contributes to the maximum bending strength. It accounts for an increase of 90% from 60%, and the contribution of the bolt is 40% to 10%. 3)In specimens tested in the range of room temperature to 250°C, there was tensile fracture by the bearings, prying action between the boundary of the web and the flange portion, and punching shear fracture. 4)For the specimens tested at 300°C and 350°C, because the bending transformation by the prying action had progressed, brittle fracture was not seen.