Seismic Performance of Frame–Shearwall Structure with Long-Span and High-Level Steel Transfer Trusses

Abstract

Based on a shaking table experiment a 1:25 scaled frame–shearwall structure model with large-span steel transfer trusses and finite-element analysis, the dynamic characteristics, seismic responses in the elastic and elastic–plastic phases, and destructive forms of the structure were studied. It was observed that cracks developed as the earthquake wave acceleration increased, but no severe cracking developed in the structure during the experiment. In the seismic responses caused by the artificial accelerogram, the site accelerogram and the El Centro accelerogram, that caused by the artificial accelerogram was the most intense. The interstory drift between transfer stories is large, which means that the transfer stories might be weak. However, the seismic performance of the steel truss transfer stories was good and the structural system was able to meet the seismic requirements regulated by the Chinese Design Code.