高層チューブ構造における構面外骨組の進行性崩壊現象の実験的再現

抄録

The framed-tube structure consists of rigid moment frames in the perimeters and floors which provide lateral support to prevent perimeter column buckling. When perimeter columns deform toward the outside of the structure, simple connections between floors and perimeter columns may rupture in tension. This behavior is simulated by the monotonic quasi-static compression tests for steel column laterally supported by aluminum board with a notch. Major findings include: (1) even 1 % lateral support strength provide satisfactory behavior of the column up to yield strength, (2) as the number of lateral supports increases, column axial deformation at the rupture of lateral supports increases, (3) as the lateral support strength increases, the degradation of the column after the peak strength becomes smaller.