Performance of Eccentrically Braced Frames Under the Action of Lateral Load

This paper presents a performance of eccentrically braced frame under the action of unexpected seismic event. To control the lateral displacements, initially researchers started experimental investigations on concentric braces to steel moment resisting frames. During severe earthquake, moment resisting frames undergo large lateral displacement and it requires special concentration to control lateral displacement and to limit the damage to non-structural elements. The concept of incorporating braces eccentrically attracted the interest of researchers and which behave excellent energy dissipation both in tension and compression in accepts of seismic performance seems to improve ductile strength in concern with shear or flexural yielding of a link element. This paper attempts to study the seismic performance of steel moment resisting frames with eccentric braces to target the lesser storey maximum displacement compared to the conventional braced system during undesirable earthquakes. In the previous research recommended that the influence of controlled yielding in the beams is not determined to EBF performance as long as stability of the beam is maintained. The provided EBF models were selected and investigated through three dimensional, linear analyses. Three steel framed structures (6 story, 9 story and 15 story) are designed as per IS 1893-2002 for calculating seismic loads by the equivalent lateral force procedure and their final performances of structure are evaluated through linear analysis using ETABS 2015.