نوع مقاله : مقاله پژوهشی
عنوان مقاله English
In the past decades, although the regulations of American Institute of Steel Construction (AISC) ordained that the link to column in Eccentrically Braced Frames (EBF) had to conform with the moment frames designed specially, unfortunately most of them got destroyed after Northridge earthquake in 1994. From this point, therefore, the regulations of AISC regarding the fore mentioned designed and performed links reconsidered more carefully; the final results have not been included in revised regulations of AISC yet. In recent studies, different ways have been put forward to solve this problem; almost all of them believe in keeping away the critical section of links to columns from common sections. The present research does its utmost to find the most useful dimensional limits for holes made in steel joist; it is going to be done through making use of RBW, holding the plastic joint at a special distance from the critical section and increasing the capacity of plastic joint circulation. To validate the results, calibrated samples were compared with Okazaki and colleagues’ experimental results in 2004 in America. This article shows that applying RBW in plastic joints, modeled in most of the links, causes critical sections to be kept away and plastic joint circulation be also observed. Based on this study, RBW models can make the joints very quickly and delay the failure of link-to-column connections. Therefore, before reaching shear force to resisting link in RBW, the failure does not happen.
کلیدواژهها English