フランジ局部曲げを考慮したH形鋼スチフナ補強接合部の耐力評価

概要

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In wide-flange steel column-to-beam connections reinforced with transverse stiffeners, local strength of beam-flange to column connections is generally obtained considering local web yielding of the column. However, when the beam-flange width is close to the column flange one, the local flange bending of columns possibly appears in the connections with rather thin stiffeners. This leads to the reduction of stiffener strength. In this paper, strength formulae of local flange bending of columns with transverse stiffeners are derived considering two types of collapse mechanisms by applying the yield line theory. The accuracy of derived strength formulae is examined through loading tests and finite element analysis. The measured strain distributions and residual flange deformations confirm the validity of collapse mechanisms considered. The simplified and conservative strength formula is proposed for the stiffener design. The applicable range of the formula is also discussed.
社団法人日本建築学会の論文
2007-09-30