Abstract
ABSTRACTThe present paper is intended to relieve the behaviour under severe seismic actions of some eccentrically bracing systems equipped with additional vertical connection elements (vertical truss elements between the ends of all dissipative members that are not connected directly to columns) compared to the seismic behaviour of traditional eccentrically bracings. Each considered structural type (with and without additional vertical truss elements) was subjected to three dynamic nonlinear analyses using Vrancea earthquakes acceleration records.The values of different parameters recorded during nonlinear analyses were compared: extreme base shear forces, maximum plastic deformations in the dissipative members, greatest member forces in different structural elements, extreme horizontal floor displacements. The amount of dissipated energy and the estimated steel consumption for each considered frame was analyzed.
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