نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشیار، دانشکده مهندسی عمران، دانشگاه سمنان
2 کارشناسی ارشد مهندسی عمران گرایش زلزله، دانشگاه سمنان
3 استادیار گروه عمران، جهاد دانشگاهی خوزستان، اهواز
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Evaluation of structures for near-fault earthquakes is taken into consideration of different researchers in recent years. Near-fault earthquakes with forward-directivity effect cause a pulse in the velocity record. The long-period velocity pulse in near-fault earthquakes causes higher seismic demands in steel moment resisting frames than far-fault earthquakes. In this research higher modes effect (HME) are evaluated in steel moment resisting frames under strike-normal (SN) and strike-parallel (SP) of near-fault earthquakes with forwarddirectivity effect and velocity pulse. For this purpose, Displacement-based adaptive pushover (DAP) method that considers the higher modes effect, has been used in this paper. The results show that the higher modes effect under strike-parallel component is higher than strike-normal component. Top stories of the structures are affected by higher modes effects. The results show that HME is increased by enhancing the time period of the structures.
کلیدواژهها [English]
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