Design of braced frame systems on multi storey buildings acccording to dbybhy 2007 and comparison of their ductilities

In this study, a 20 storeyed (ground floor + 19 normal floor) steel building was analiysed and scrutinized according to DBYBHY 2007 (Turkish Code about Buildings That Are Constructed on Seismic Regions 2007) with different concentrically and eccentrically braced membersand also moment frames. In study, SAP 2000 program used for analysisOn first chapter, general information was given about the study. On second chapter, the informations about steel structures, concentrically and eccentrically braces and also about the steel struructures which have braced members, according to Turkish Earthquake Code 2007. Third chapter is about analyse stepsfor different braced structures that are subject of this study. Fourth chapter is the final one, which includes analysis results and comments. Analysis and comments of the study have been made according to about, weight of the buildings, the earthquake forces from two direction both, displacements of elsatic and plastic analyze, and the ductility ratios.Keywords: concentrically braces, eccentrically braces, moment frames, steel structures,ductility, stifness, structure behavior