Experimental study on full-scale steel moment-resisting frames with nonstructural walls subjected to multiple earthquakes

A cyclic loading test of a steel moment-resisting frame (SMRF) with nonstructural components was conducted to evaluate the seismic performance buildings subjected multiple earthquakes. The specimen is single-floor, one-span substructure intermediate story typical current middle- or low-rise building in Japan. Two specimens were tested. structural systems these two same, but attached different. light gauge (LGS) partition wall and autoclaved lightweight concrete (ALC) exterior used as each specimen. One set history that corresponds one earthquake created based on response analysis results, sets loadings various levels loaded consider effect Based observed visible damages, it found component performed well under earthquakes maximum drift angle less than 1/50, while for component, ALC better LGS wall. From obtained load–deformation relationship, strength contribution gradually decreased when earthquakes, fluctuates within close range. Moreover, elastic stiffness almost constant, decreased.