Performance-based design of 3COM data center with supplemental damping devices

摘要

Welded Steel Moment Frame (WSMF) buildings are designed to resist seismic displacement, based on the assumption that they are capable of extensive yielding, inelastic deformation, and absorbing energy without loss of strength. However, more than one hundred WSMF buildings were found to have experienced beam-to-column connection fractures at the limited levels of inelastic behavior following the January 17, 1994 Northridge Earthquake. Therefore, the introduction of supplemental damping to strcutures is considered a cost-effective strategy to enahnce the structural seismic response since the inelastic deformation demands on connections can be significantly reduced if properly designed. This report describes the design criteria and procedures for a WSMF with fluid viscous dampers. The results show the improved seismic behaviors on steel building frames with supplemental dampers.