Plastic Deformation of Beams is Steel Moment Frames Subjected to Strong Earthquakes (Part 2: Hysteretic behavior)

摘要

The previous paper (Part 1) described the magnitude of plastic deformation introduced into beam-ends. In this paper (Part 2), based on the same numerical results, we deal with hysteretic behavior. Cumulative plastic rotation, the increment of plastic rotation during each half-cycle of vibration, and the hysteretic process of plastic rotation are discussed. A method is proposed to approximate damage to the beams in steel moment frames subjected to strong ground motions.