Seismic retrofit using passive control

This paper is a case study of a six-story welded moment resisting steel frame (WMRSF) building in the Los Angeles area, which had been shaken during the Northridge earthquake. The objective of study was to assess and compare the effectiveness of seismic retrofit techniques using passive energy dissipation systems. An analytical model of the uncontrolled structure was first defined to perform nonlinear time history analyses under a selection of historic earthquakes. The structure was then retrofitted with rate- dependent and rate-independent supplemental damping devices, and the effectiveness of various damping systems were evaluated.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.