外ダイアフラム接合部の有限要素解析による剛性評価式 : 半剛接鋼骨組柱梁仕口の復元力特性に関する研究

概要

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The positive bending strength of composite girder could be estimated with the ultimate bearing stress of the concrete slab. It is known that the shape of the column make a difference the ultimate bearing stress of the concrete slab. The ultimate bearing stress of the concrete slab isn't influenced by the thickness of flange in case of H-shaped steel column but is done by the thickness of column in case of S.H.S. column. In this report, the experiments of the push-out test of conncrete slab with a S.H.S. column and the subassemblage frame test using the thickness of column as parameter were done, and it is clearly that the thickness of S.H.S. column influence the ultimate bearing stress of the concrete slab and the positive bending strength of composite girder. A methodology, based on finite element modeling, is presented to develop analytically the momentrotation relationship for semi-rigid beam-to-column connections stiffened by exterior diaphragms. Sufficient cases were analyzed, which cover the variation of dimensions within a practical range. Finally, simple expression for semi-rigid connections, which can be conveniently used with computer frame-analysis program, was deduced.
一般社団法人日本建築学会の論文
1992-03-20