Finite Element Analysis of Double-Skin Steel-Concrete Composite Shear Walls with Portal Frames under Monotonic Shear Loading

Authors

Islam Salama, Associate Professor, Civil Department, College of Engineering, Almaaqal University, Basrah, IRAQ; Department of Civil Engineering, Zagazig Higher Institute of Engineering & AND TechnologyFollow
Mahmoud M. Elnahla, Assistant Lecturer, Civil Department, College of Engineering, Almaaqal University, Basrah, IRAQFollow
Hasan Maaly, Professor, Structural Engineering Department, Zagazig University, Zagazig, EGYPT 44519Follow
Ibrahim T. Arafa, Assistant Professor, Structural Engineering Department, Zagazig University, Zagazig, EGYPT 44519Follow

Abstract

This study investigates the structural performance of double-skin profiled steel-concrete composite shear walls (DSPCW) integrated with portal frames under monotonic shear loading using a validated finite element model. The FE framework, developed in ABAQUS, accurately predicts experimental load-displacement behavior, stress distribution, and failure modes, demonstrating its reliability for parametric exploration. A comprehensive analysis evaluates the effects of steel grade, fastener quantity and distribution, panel openings, and comparative performance against traditional vertical bracing systems. Key findings reveal that DSPCW panels with engineered cementitious composite concrete cores exhibit 1.5–2 times higher shear capacity than conventional braced frames at comparable mass, emphasizing their efficiency for lateral load resistance. While increasing fastener numbers enhances shear resistance, unidirectional spacing adjustments yield diminishing returns, with staggered fastener patterns achieving optimal buckling resistance (260 kN). Panel openings reduce shear capacity proportionally to their size, though strategic fastener placement mitigates localized buckling without altering global load-displacement behavior. The study further establishes mass scaling (factor = 100) as a computationally efficient strategy for quasi-static simulations. These results position DSPCW systems as a high-strength, ductile, and prefabrication-friendly alternative to traditional bracing, offering enhanced design flexibility for modern structural applications.

Recommended Citation

Salama, Islam; Elnahla, Mahmoud M.; Maaly, Hasan; and Arafa, Ibrahim T. (2025) "Finite Element Analysis of Double-Skin Steel-Concrete Composite Shear Walls with Portal Frames under Monotonic Shear Loading," Almaaqal Journal of Sustainability and Emerging Technology: Vol. 1: Iss. 1, Article 7.
Available at: https://ajset.almaaqal.edu.iq/journal/vol1/iss1/7