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Effects of Infill Plate Thickness and Shear Connector Spacing on Damage in RC Panels of Composite Shear Walls

•   Mr. Moein Jalilian ,  Ferdowsi University of Mashhad ,   
•   Dr. Mohammad Meghdadian ,  PhD of Structural Engineering, School of Engineering, Ferdowsi University of Mashhad ,   
•   Dr. Mansour Ghalehnovi ,  Professor of Structural Engineering, School of Engineering, Ferdowsi University of Mashhad ,   

Major Topic: Steel Structures|سازه های فولادی

Abstract

Composite shear wall proposed as a lateral load-resisting system aiming to address the deficiencies of steel plate shear walls. To prevent premature shear buckling in the steel plate, one- or two-sided concrete panels with appropriate thickness are attached to the infill plate. Examining the damage in concrete panels can facilitate the prediction of the behavior of the steel plate. Furthermore, understanding the progression of damage in concrete panels can lead to more effective measures for restraining the infill steel plate. Therefore, in the present study, the effect of infill plate thickness and shear connector spacing on the amount and pattern of damage in RC panels under cyclic loading has been investigated using the finite element method. The research results indicate that concrete panels reach their ultimate damage threshold at a drift of 2%. Using shorter spacing for shear connectors results in more uniform but faster propagation of damage in the center of the concrete panel. However, at greater distances between shear connectors, damage in the concrete panel concentrates initially at all connector locations and then spreads to other areas of the panel. Additionally, in similar drift levels, concrete panels with thicker plates show lower damage values compared to systems with thinner plates due to the higher buckling strength of thicker infill plates.

Keywords

Composite steel plate shear wall; Reinforced-concrete panel; Damage; Cyclic loading; Finite element; Abaqus

• buckling initiation in less slender plates (thicker ones) will be accompanied by a longer delay
• Reducing the level of damage to the concrete panel should be evaluated simultaneously with the provided degree of bracing of the plate
• Reducing the distance between shear connectors decreases the continuity of damage distribution at the location of shear connectors

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