Seismic performance analysis of a multistory steel moment frame building damaged during the 1994 Northridge earthquake

This paper presents results of performance analysis studies on an eleven story steel moment frame building located in west Los Angeles which was damaged during the 17 January 1994 Northridge earthquake. Extensive field inspections of damage were performed prior to the start of this investigation. These inspections/tests revealed some degree of damage in more than 28% of the moment frame joints of the building. Extensive two- and three-dimensional, linear and nonlinear, static and dynamic analyses of the building are conducted as a part of this study to investigate and correlate observed damage with various elastic and inelastic analytical damage predictors. Statistical correlations of observed damage patterns with various analytical damage indicators are presented.