Saadatmand, M. and Bakhshpoori, T. 2026. A Hybrid Imperialist Competitive Algorithm andHarmony Search for Optimal Design of 2D Steel Frames. Journal of Civil Aspects and Structural Engineering. 3, 2 (Jun. 2026), 143–156. DOI:https://doi.org/10.48314/jcase.v3i2.83.