角形鋼管柱に接合されるH形鋼はり端部の曲げ耐力の評価

概要

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The bending stresses in the web plate of H-beam welded to RHS-column are less than those of prediction by beam theory, because the flange plate of RHS lacks out-of-plane rigidity. In this paper, it is pointed out that the maximum flexural strengths of H-beams welded to RHS-columns are affected by the yield ratio of the beam flange material, Y_f, width-to-thickness ratio of RHS, B/T, and the full plastic moment of the web part to that of the beam neglected the cross section of the scallops, M_<ws>/M_<ps>. Based on the extensive test results, the empirical formula, Eq (10), predicting the maximum flexural strength of H-beam is derived by dimensional analysis and regression analysis. For RHS-column connections with B/T≦25 and Y_f<0.7, the maximum flexural strengths of beams are satisfied the following conditions. For SS41 : M_<max>/M_<ps>>1.30 For SM 50 : M_<max>/M_<ps>>1.20
社団法人日本建築学会の論文
1988-07-30