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daliri, mahdi, Ghohani Arab, Hamed, miri, mahmoud, Khatibi, Seyed hashem. (1404). Prediction of Shear Strength in SCS Panels with One-End Welded BP Shear Connector Using Numerical Modeling and Gene Expression Programming (GEP). نشریه مهندسی عمران امیرکبیر, 9(3), 185-204. doi: 10.22060/ajce.2025.23945.5907
mahdi daliri; Hamed Ghohani Arab; mahmoud miri; Seyed hashem Khatibi. "Prediction of Shear Strength in SCS Panels with One-End Welded BP Shear Connector Using Numerical Modeling and Gene Expression Programming (GEP)". نشریه مهندسی عمران امیرکبیر, 9, 3, 1404, 185-204. doi: 10.22060/ajce.2025.23945.5907
daliri, mahdi, Ghohani Arab, Hamed, miri, mahmoud, Khatibi, Seyed hashem. (1404). 'Prediction of Shear Strength in SCS Panels with One-End Welded BP Shear Connector Using Numerical Modeling and Gene Expression Programming (GEP)', نشریه مهندسی عمران امیرکبیر, 9(3), pp. 185-204. doi: 10.22060/ajce.2025.23945.5907
daliri, mahdi, Ghohani Arab, Hamed, miri, mahmoud, Khatibi, Seyed hashem. Prediction of Shear Strength in SCS Panels with One-End Welded BP Shear Connector Using Numerical Modeling and Gene Expression Programming (GEP). نشریه مهندسی عمران امیرکبیر, 1404; 9(3): 185-204. doi: 10.22060/ajce.2025.23945.5907

Prediction of Shear Strength in SCS Panels with One-End Welded BP Shear Connector Using Numerical Modeling and Gene Expression Programming (GEP)

AUT Journal of Civil Engineering
دوره 9، شماره 3، بهمن 2025، صفحه 185-204    اصل مقاله (1.67 M)
نوع مقاله: Research Article
شناسه دیجیتال (DOI): 10.22060/ajce.2025.23945.5907
نویسندگان
mahdi daliri1؛ Hamed Ghohani Arab* 1؛ mahmoud miri1؛ Seyed hashem Khatibi2
1Civil Engineering Department, University of Sistan and Baluchestan, Zahedan, Iran
2Civil Engineering and Architectural Department, Faculty of Engineering, University of Torbat Heydarieh, Torbat Heydarieh, Iran
چکیده
Steel-concrete-steel (SCS) sandwich structures, made of steel faceplates and a concrete core, are known for their strength, durability, and efficiency. One-end welded box-profile (BP) connectors play a key role in holding these structures together by resisting shear forces at the interface. Despite their potential, there isn’t a precise formula to predict their shear strength, especially when considering the overlap ratio.

This study takes a step toward solving that problem by developing a reliable model for estimating the shear strength of BP connectors. Using the Taguchi experimental design, researchers created 18 numerical models with varying connector widths, thicknesses, concrete core strengths, and overlap ratios. Finite element simulations, validated against experimental push-out tests, analyzed load-slip behavior and failure modes. To translate these findings into a practical equation, the study applied a Gene Expression Programming (GEP) algorithm, which identified patterns and relationships among the key variables. The resulting equation proved to be highly accurate, with a correlation coefficient (R) of 0.919 and lower errors than existing methods. By accounting for the overlap ratio, this model provides engineers with a more precise and practical tool for designing safer and more efficient SCS structures.

Ultimately, this research improves our understanding of BP connectors and offers a cost-effective way to enhance SCS structures in various fields, from bridges and offshore platforms to high-performance buildings.
کلیدواژه‌ها
Steel-concrete-steel sandwich structure؛ BP connectors؛ Shear connectors؛ Push-out test؛ SCS
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