実大鉄骨梁の高温曲げ耐力に関する実験的研究

概要

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The load bearing capacities of steel simple beams in full-scale under elevated temperatures that are achieved by fire tests are discussed in this paper. The ISO standard and the other heating tests with loading were done for 17 specimens covered with some kind of thermal insulation. H-shape steelworks of the steelgrades of SS400 and SN400B which have several different section sizes specified in the JIS standard and the support spans of specimens are 6.951 or 5.1 meter. After the careful observation of tests results, authors concluded as followings: The collapse moments of the steel beams can be obtained from the test results of mean steel temperatures between 34℃ and 750℃ The deformation of the beam at a mid-span can be induced by load, steel temperature and some other parameters. Although the allowable temperature of a beam with the maximum service load of 16tonf/cm^2, is revealed to be less than 541℃ or so, the load capacities decreased with the temperature increase from 500℃ to 750℃
社団法人日本建築学会の論文
2000-10-30