ANALYSIS ON OVERALL BUCKLING OF COLD-FORMED THIN-WALLED STEEL LIPPED CHANNEL BEAMS WITH WEB OPENINGS

YAO Xingyou; CHENG Guowei; GUO Yanli; ZHOU Shui; YANG Jiabao

doi:10.13204/j.gyjzg21081302

Volume 51 Issue 10

Feb. 2022

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YAO Xingyou, CHENG Guowei, GUO Yanli, ZHOU Shui, YANG Jiabao. ANALYSIS ON OVERALL BUCKLING OF COLD-FORMED THIN-WALLED STEEL LIPPED CHANNEL BEAMS WITH WEB OPENINGS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 101-108,100. doi: 10.13204/j.gyjzg21081302

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YAO Xingyou, CHENG Guowei, GUO Yanli, ZHOU Shui, YANG Jiabao. ANALYSIS ON OVERALL BUCKLING OF COLD-FORMED THIN-WALLED STEEL LIPPED CHANNEL BEAMS WITH WEB OPENINGS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 101-108,100. doi: 10.13204/j.gyjzg21081302

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ANALYSIS ON OVERALL BUCKLING OF COLD-FORMED THIN-WALLED STEEL LIPPED CHANNEL BEAMS WITH WEB OPENINGS

doi: 10.13204/j.gyjzg21081302

1. School of Civil and Architectural Engineer, Nanchang Institute of Technology, Nanchang 330099, China;
2. Jiangxi Province Key Laboratory of Hydraulic & Civil Engineering Infrastructure Security, Nanchang 330099, China

Received Date: 2021-08-13
Available Online: 2022-02-21

Abstract

Abstract

The finite element software ABAQUS was used to analyze the influence of web openings on the overall buckling coefficient cold-formed thin-walled steel lipped channel beams with web openings considering the type, size and position of openings. The analysis results showed that the size of the opening had a greater influence on the overall buckling coefficient for bending members. The overall buckling coefficients φ_b of bending members decreased with the increase of diameter of the circular opening or length and width of rectangular opening. The opening spacing had a slight effect on the overall buckling coefficient when it met a limit value. Then the calculation method of overall buckling coefficient of cold-formed thin-walled lipped channel steel bending members with circle or rectangular openings in the web was presented based on the finite element parameters analysis. Finally, the comparison on the overall buckling coefficient between predictions with proposed method and finite element results and results by using AISI showed a great accuracy and feasibility. The proposed method could be used to predict the overall buckling coefficient of cold-formed thin-walled lipped channel steel members with circle or rectangular openings in the web.
- cold-formed thin-walled steel,
- bending member,
- web openings,
- overall buckling,
- buckling coefficient

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References(26)

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