تبيين رفتار پيچشي هسته هاي برشي در ساختمان هاي بلند با كاربرد المان هاي محدود ساخته شده بر مبناي توابع كرنش

Assessment of Torsional Response of Shear Cores in Tall Buildings using Strain Based Finite Elements

Application of shear cores in multistory and tall buildings is one of the ways to increase the torsional resistance as well as the lateral resistance of the structure. It should be noted that the application of an efficient analytical model to explain the action of shear cores is important. The strain based finite elements are suitable to model and analyze shear core structures. In this paper, based on using a presented strain based finite element, the torsional behavior of shear cores in tall buildings is studied. The analytical formulation of the presented finite element has been developed based on the assumptions of tall buildings behavior. The capability of modeling of the plane panels which construct the shear core structure and the ability of producing compatible rotations with lintel beams in tall building, are the notable points of view based on the application of the presented finite element. Examples are given to show the great accuracy of the presented finite element in modeling of torsional behavior of shear cores.