Lateral resistance behavior of double-skin steel plate-concrete composite shear walls with horizontal slits at the end

In this study, the lateral resistance behavior of double-skin steel plate-concrete composite shear walls with horizontal slits at the end was examined. Specimens were fabricated and tested to investigate the influence of slits on composite walls. The hysteretic and envelope curves of the specimens were obtained experimentally. The damage pattern of the composite wall specimens was determined to be bending failure. There was no significant difference between the composite shear walls with and without slits, except for the slightly lower bearing capacity and energy dissipation of the former. The composite wall with slits at the end exhibited superior lateral resistance compared to that of the reinforced concrete wall. This indicates that the shear resistance of the steel plate with slits was effective. The results of this study suggest that the steel plates in double-skin steel plate-concrete composite shear walls do not need to be connected on every floor in high-rise buildings. Finally, lateral capacity calculation methods for composite shear walls are proposed based on the experimental and simulated data, demonstrating good correspondence between each other.