回転と塑性変形を伴うせん断キーの力学挙動の実験的評価

抄録

We made a shear loading test on a “key support” which consisted of a shear key and upper and lower plates with keyways. We applied a horizontal displacement on the upper plate under a stable vertical load. During the test, the key showed the shear deformation and rotating displacement. With the rotation, the edge of the key raised the plate. After the edge was apart from the upper plate, the key support showed the ultimate strength against horizontal loading. The shear loading test under the different vertical load showed the similar deformation and rotation, but the ultimate strength differed from another vertical load case. This result indicated that the ultimate strength of the key support against horizontal load was dependent on the vertical load.