Abstract
Prestressed steel-reinforced-concrete (PSRC) Vierendeel truss transfer structures significantly increase the span of the transfer story and enhance the seismic performance with prestressing and steel-concrete techniques. A “three lines of defense” seismic design method was adopted in this study to further investigate the seismic performance of this structural system using the finite element software OpenSees to analyze the dynamic response of the PSRC Vierendeel truss transfer story spatial frame structure under an earthquake in the Intensity Region 8 (PGA = 400 Gal). To design four distinct PSRC Vierendeel truss transfer story frame structures, the number of bottom frame spans and the placement of the transfer truss were altered. An elastoplastic time-history analysis under a three-way rare earthquake was conducted by combining the quantitative control indices of the “three lines of defense” design method. The study shows that the PSRC Vierendeel truss transfer story structures designed by the “three lines of defense” seismic design method meet the requirements of the quantitative control indexes, and the structural seismic performance was satisfied.
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