Strength Analysis of Eccentric Rectangular Hollow Section X-Joints Subjected to Axial Compression in the Brace
Document Type
Article
Publication Date
12-1-2024
Abstract
This paper investigates the mechanics behavior of eccentric rectangular hollow section (ERHS) X-joints subjected to axial compression in the brace, based on which analytical formulas are established to predict the strength of the ERHS X-joints. Static testing is conducted on two ERHS X-joint and one RHS X-joint specimens under brace compression, and the corresponding finite element (FE) analysis is performed. It is found that the ultimate strength of the ERHS X-joints with a medium brace/chord width ratio (β) is 39% higher than that of the RHS X-joints. The strength and initial stiffness of the ERHS X-joints increase when β increases. Based on the load transferring mechanism, two analytical models and the corresponding equations are proposed to predict the strength of the ERHS X-joints with β≤0.925 and β=1.0. The proposed models are validated through experimental data and FE results.
Publication Source (Journal or Book title)
Journal of Structural Engineering (United States)
Recommended Citation
Zhao, B., Sun, C., & Zhong, S. (2024). Strength Analysis of Eccentric Rectangular Hollow Section X-Joints Subjected to Axial Compression in the Brace. Journal of Structural Engineering (United States), 150 (12) https://doi.org/10.1061/JSENDH.STENG-13595