- Effects of Capacity Design Rules on Seismic Performance of Steel Moment Resisting Frames
- M.T. Naqash ; G. De Matteis ; A. De Luca
- Book Title / Journal: 15th World Conference on Earthquake Engineering
- Year: 2012 , Volume: , Series:
- Earthquake engineering
- Keywords: Seismic codes ; Moment resisting steel frames ; Seismic resistance ; Pushover analysis
- The current paper deals with the seismic design of 9-Storey office building using Eurocode 8 and AISC
(American Institute of Steel Construction) provisions, where the seismic load resisting system is composed of either spatial or perimeter moment resisting frames. According to EC8, Ductility Class High (DCH) and Ductility Class Medium (DCM) with behaviour factor of 6.5 and 4.0 respectively, are used. Whereas in the case of AISC code, only Special Moment resisting Frame (SMF) with response modification factor of 8 is employed.
In order to shed light on the pros and cons of the design criteria and thus the influence on the capacity design rules of the two aforementioned codes, designed frames are analysed by non-linear static analysis. The frame performances are measured in terms of overstrength and redundancy factors, strength demand to capacity and drift demand to capacity ratios, allowing interesting conclusions to be drawn.