SEISMIC PERFORMANCE OF A 20-STORY STEEL-FRAME BUILDING IN CANADA

摘要

In performance-based seismic design of a structure, the inelastic deformation demand of structural members or nsystem is the primary input, whereas in conventional design procedure the input is the equivalent static loads to nrepresent seismic effects. The National Building Code of Canada (NBCC) 2005 requires that for irregular and nbuildings higher than 60 m, dynamic analysis must be conducted to calculate seismic design forces and defl ection, nwhile for other cases, equivalent static loads can be used for the design. In this paper, the performance of a 20-nstory steel moment resisting steel frame building, designed for western part of Canada, has been presented. nSimulated and actual (scaled) ground motion records are used to evaluate the dynamic response. While NBCC ndoes not provide any performance-based design method, various techniques for displacement-based design have nbeen explored here in the context of the 20-story building. A wide range of variation amongst these methods in nterms of their application and results was found. Amongst these methods the direct displacement-based design nmethod seems to be more suitable for carrying out the performance-based design of a building. Copyright © n2009 John Wiley & Sons, Ltd.