ABSTRACT
The present analytical work investigates the seismic performance of steel columns under horizontal earthquake ground motions and combined horizontal and vertical components. Towards this aim, a three-storey two-bays MRF was designed in compliance with modern seismic detailing. Linear and nonlinear time-history analyses were carried out to investigate the local and global response quantities. The structural performance of the sample framed system was assessed by utilizing an ensemble of natural records measured during the 2011 Christchurch (New Zealand) earthquake, which is characterized by high values of verticalto-horizontal peak ground accelerations, as further discussed hereafter.
