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Research on the design of overall stability capacity for axial compression and single sided connected eccentric compression equal leg angles.

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Title: Research on the design of overall stability capacity for axial compression and single sided connected eccentric compression equal leg angles.
Authors: Han, JingJing1,2,3 (AUTHOR) hanjingjing_stu@163.com, Zhang, Wei1,4 (AUTHOR) zh.ei@163.com, Yang, LuFeng1 (AUTHOR)
Source: Scientific Reports. 10/23/2025, Vol. 15 Issue 1, p1-28. 28p.
Subject Terms: *STRUCTURAL stability, *DESIGN techniques, *AXIAL loads, *STRUCTURAL components, *RELIABILITY in engineering, *AXIAL stresses, *ENGINEERING standards
Abstract: This study investigates the design methods for the overall stability capacity in equal-leg angles under axial compression and those subjected to eccentric compression with single-sided connections. It compares eight current codes from China, Europe, Australia, and the United States, emphasizing the differing design considerations for equal-leg angles. The research is based on 712 sets of axial compression tests and 226 sets of eccentric compression tests with single-sided connections on equal-leg angles, examining the discrepancies between the calculated and tested overall stability capacities as per the codes. The findings indicate significant variations in calculated capacities across the eight codes, with a general inclination towards conservatism in axial compression designs for equal-leg angles. Codes such as AS 4100, AS/NZS 4600, and the general method of EN 1993-1-1 use the axial compression-bending (N–M) interaction equation for eccentric compression, whereas GB 50,017, DL/T 5154, EN 1993-3-1, and the concise method of EN 1993-1-1 use a simplified axial compression formula for eccentric compression. These simplified methods deviate from practical engineering scenarios, especially for single-sided connected eccentric compression equal-leg angles. Following a comprehensive evaluation of the codes and test results, this study suggests a revision to the stability factor in GB 50,017 for axial compression in equal-leg angles. Additionally, it introduces a new design method for the overall stability capacity of single-sided connected eccentric compression in equal-leg angles, drawing on the N–M interaction equation from AS/NZS 4600. The paper concludes with the experimental data validation of the proposed stability factor for axial compression in equal-leg angles and the new design method for eccentric compression in equal-leg angles. [ABSTRACT FROM AUTHOR]
Database: Academic Search Index
Description
Abstract:This study investigates the design methods for the overall stability capacity in equal-leg angles under axial compression and those subjected to eccentric compression with single-sided connections. It compares eight current codes from China, Europe, Australia, and the United States, emphasizing the differing design considerations for equal-leg angles. The research is based on 712 sets of axial compression tests and 226 sets of eccentric compression tests with single-sided connections on equal-leg angles, examining the discrepancies between the calculated and tested overall stability capacities as per the codes. The findings indicate significant variations in calculated capacities across the eight codes, with a general inclination towards conservatism in axial compression designs for equal-leg angles. Codes such as AS 4100, AS/NZS 4600, and the general method of EN 1993-1-1 use the axial compression-bending (N–M) interaction equation for eccentric compression, whereas GB 50,017, DL/T 5154, EN 1993-3-1, and the concise method of EN 1993-1-1 use a simplified axial compression formula for eccentric compression. These simplified methods deviate from practical engineering scenarios, especially for single-sided connected eccentric compression equal-leg angles. Following a comprehensive evaluation of the codes and test results, this study suggests a revision to the stability factor in GB 50,017 for axial compression in equal-leg angles. Additionally, it introduces a new design method for the overall stability capacity of single-sided connected eccentric compression in equal-leg angles, drawing on the N–M interaction equation from AS/NZS 4600. The paper concludes with the experimental data validation of the proposed stability factor for axial compression in equal-leg angles and the new design method for eccentric compression in equal-leg angles. [ABSTRACT FROM AUTHOR]
ISSN:20452322
DOI:10.1038/s41598-025-02000-3