Steel sheet shear walls are panels in which sheets with burring holes aligned along the vertical direction are fastened to frame members and applied to multi-story buildings in seismically active regions. The wall that receives in-plane shear force allows shear stress to concentrate in intervals between the burring holes. Deflections of vertical frames are prevented by cross rails aligned along the horizontal direction of the wall. Finite element analyses and in-plane shear experiments revealed that all intervals between the holes of the wall were simultaneously deformed and shear buckling areas were limited in the intervals by ring-shaped ribs of burring holes. Post-buckling behavior depended on the shapes of tension field on the intervals and restraints of cross rails. Based on the results, allowable design strength formulas are developed and indexes of strength after shear buckling of the walls are proposed.%バーリング孔付き鋼板耐カ壁について、水平方向に揷入される水平 補剛材の本数を変数とし、水平補剛材が壁挙動に及ぼす効果ならびに そのメ力ニズムについて、壁の解析ならびに面内せん断試験より明らかにした。併せて、壁の許容耐力の設計値を示し、壁の変形角1/100時せん断力の指標値を提案した。
展开▼
