圧縮力を受ける縦横補剛板および縦桁を有する縦横補剛板の一設計法
1985 年 1985 巻 362 号 p. 55-64
詳細
1985 年 1985 巻 362 号 p. 55-64
A design method based on the column approach is proposed for evaluating the ultimate strength of orthogonally stiffened wide plates with some heavy longitudinal stiffeners (stringers) in steel box girder bridges including the main box girders of cable stayed bridges. The method is verified by the elasto-plastic and large deflexion analysis (F. E. M.). It is shown that the dimensions of transverse stiffeners in orthogonally stiffened wide plates with small aspect ratio can be greatly reduced without significant variation of the ultimate strength either by increasing the size of the longitudinal stiffeners or by replacing some longitudinal stiffeners with stringers so proportioned that the elastic buckling strength remains constant. The required stiffness of the flange plate of the stringer to avoid lateral-torsional buckling is also investigated by the F. E. M.
