Abstract
Steel plate shear walls consist of thin infill steel plates attached to beams, called (horizontal boundary elements, HBEs), and columns (vertical boundary elements, VBEs) in structural steel frames. The thin unstiffened web plates are expected to buckle in shear at low load levels and develop tension field action, providing ductility and energy dissipation through tension yielding of the web plate. HBEs are designed for stiffness and strength requirements and are expected to anchor the tension field formation in the web plates. VBEs are designed for yielding of web plates and plastic hinge formation at the ends of the HBEs. This design approach may result in very large demand on boundary frame members, especially VBEs in most cases. Several methods such as using LYP, perforating the infill plate and omitting connection of infill plate to columns have been proposed to reduce the moment and axial force demands on the VBEs. The main purpose of this research is to study the behavior of steel plate shear walls with various connection of infill plate to columns in multi span moment frames. A numerical study has been performed in order to investigate the behavior of such a system. The results of proposed system were compared with those of the conventional SPSWs. Results show that reducing the infill plate connection to columns will reduce the axial forces in columns.
Highlights
Steel plate shear walls (SPSW) are efficient lateral load resisting systems and can be used as an efficient alternative to traditional systems
According to results ultimate capacity for models in each group with the same span length is approximately equal which means that designing of the models is well done
In this paper push over analysis is performed on 12 multi span one story SPSWs
Summary
Steel plate shear walls (SPSW) are efficient lateral load resisting systems and can be used as an efficient alternative to traditional systems. Depending on their slenderness, SPSW may yield under applied shear before they buckle or may buckle while almost elastic. Prior to the 1980s, SPSW design was based on the concept of preventing the out of plane buckling of the infill panel by the use of heavily stiffened steel plates [1]. In order to make the SPSW more competitive, further studies focused more on slender systems, which utilize unstiffened thin walled steel panels and resist lateral forces mainly through post-buckling tension field action [2,3,4,5,6]
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