Component method-based mechanical model for semi-rigid beam-to-column connections in steel storage rack systems

Steel storage rack systems are essential components of modern warehousing and logistics, where structural stability and efficient performance are paramount. The behavior of beam-to-column connections in these systems significantly affects their overall structural integrity, making accurate evaluation of their rotational stiffness a critical task. However, experimental methods, while reliable, are both costly and time-consuming, posing challenges for widespread application. In the present study, a mechanical model is proposed to estimate the initial rotational stiffness of beam-to-column connections in cold-formed steel storage racks. Developed in accordance with EN 15512, Eurocode 3, and established strength principles, the model incorporates ten deformable components that contribute to the connection's stiffness, including bending in the connector, crushing in the tab slots, and shear in the column sections. The model was validated against experimental results, showing a strong correlation and confirming its predictive capability. Each deformable component's contribution to the overall rotational stiffness was also systematically analyzed, providing a deeper understanding of their roles in connection behavior. Compared to existing models in the literature, the proposed mechanical model demonstrated higher accuracy and lower error rates, positioning it as a reliable tool for structural analysis and design. The present study provides a practical and cost-effective approach to evaluate beam-to-column connections in steel storage racks, reducing reliance on expensive experimental testing. The proposed model not only enhances the understanding of semi-rigid connection behavior but also offers a robust framework for engineers to optimize designs, ensuring greater structural efficiency and safety in storage systems.

Dergi

SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES

Yıl

2026

Cilt

51

Sayı

1

ISSN

0256-2499

eISSN

0973-7677

DOI

10.1007/s12046-025-03015-2

WoS UID

WOS:001662711700005