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Shear buckling strengths of web-posts in a castellated steel beam with hexagonal web openings
https://orcid.org/0000-0001-8438-095X
Abstract Shear buckling behaviors of web-post in a Castellated Steel Beam (CSB) with hexagonal web openings under vertical shear were investigated using finite element method. Through treating the upper part of the web-post as a free body under horizontal shear force, whose shear buckling strength can be calculated by the thin-plate shear buckling theory, design equations for the vertical shear buckling strength of the web-post were proposed. Parameters that affected the vertical shear buckling strength of the web-post were studied, which were the opening height to web thickness ratio h 0/t w, the web-post width to web thickness ratio e/t w, the web height of Tee-section above the opening to the web thickness h f/t w, the web thickness t w and the incline angle of the opening edge α. After obtaining the vertical shear buckling strength of a CSB through finite element model, the shear buckling coefficient k can be obtained through inverse analysis. Research results showed that k decreased non-linearly with the increase in e/t w and h f/t w and it increased linearly with the increase in α and h 0/t w. Practical calculating method for k was proposed based on parameter analysis results. The vertical shear buckling strength of the web-post calculated using the proposed shear buckling coefficient k agreed well with that obtained from the finite element simulation. For the proposed method was based on the elastic buckling of the web-post, it overestimated the shear buckling strength when the web-post buckled in the elastic–plastic state.
Highlights Shear buckling strength of web-post V cr was investigated through a free body. V cr was obtained by a verified finite element model. Method for shear buckling coefficient k was proposed using reverse analysis. V cr of a web-post employing proposed k agreed well with simulation results.
Shear buckling strengths of web-posts in a castellated steel beam with hexagonal web openings
https://orcid.org/0000-0001-8438-095X
Abstract Shear buckling behaviors of web-post in a Castellated Steel Beam (CSB) with hexagonal web openings under vertical shear were investigated using finite element method. Through treating the upper part of the web-post as a free body under horizontal shear force, whose shear buckling strength can be calculated by the thin-plate shear buckling theory, design equations for the vertical shear buckling strength of the web-post were proposed. Parameters that affected the vertical shear buckling strength of the web-post were studied, which were the opening height to web thickness ratio h 0/t w, the web-post width to web thickness ratio e/t w, the web height of Tee-section above the opening to the web thickness h f/t w, the web thickness t w and the incline angle of the opening edge α. After obtaining the vertical shear buckling strength of a CSB through finite element model, the shear buckling coefficient k can be obtained through inverse analysis. Research results showed that k decreased non-linearly with the increase in e/t w and h f/t w and it increased linearly with the increase in α and h 0/t w. Practical calculating method for k was proposed based on parameter analysis results. The vertical shear buckling strength of the web-post calculated using the proposed shear buckling coefficient k agreed well with that obtained from the finite element simulation. For the proposed method was based on the elastic buckling of the web-post, it overestimated the shear buckling strength when the web-post buckled in the elastic–plastic state.
Highlights Shear buckling strength of web-post V cr was investigated through a free body. V cr was obtained by a verified finite element model. Method for shear buckling coefficient k was proposed using reverse analysis. V cr of a web-post employing proposed k agreed well with simulation results.
Shear buckling strengths of web-posts in a castellated steel beam with hexagonal web openings
https://orcid.org/0000-0001-8438-095X
Abstract Shear buckling behaviors of web-post in a Castellated Steel Beam (CSB) with hexagonal web openings under vertical shear were investigated using finite element method. Through treating the upper part of the web-post as a free body under horizontal shear force, whose shear buckling strength can be calculated by the thin-plate shear buckling theory, design equations for the vertical shear buckling strength of the web-post were proposed. Parameters that affected the vertical shear buckling strength of the web-post were studied, which were the opening height to web thickness ratio h 0/t w, the web-post width to web thickness ratio e/t w, the web height of Tee-section above the opening to the web thickness h f/t w, the web thickness t w and the incline angle of the opening edge α. After obtaining the vertical shear buckling strength of a CSB through finite element model, the shear buckling coefficient k can be obtained through inverse analysis. Research results showed that k decreased non-linearly with the increase in e/t w and h f/t w and it increased linearly with the increase in α and h 0/t w. Practical calculating method for k was proposed based on parameter analysis results. The vertical shear buckling strength of the web-post calculated using the proposed shear buckling coefficient k agreed well with that obtained from the finite element simulation. For the proposed method was based on the elastic buckling of the web-post, it overestimated the shear buckling strength when the web-post buckled in the elastic–plastic state.
Highlights Shear buckling strength of web-post V cr was investigated through a free body. V cr was obtained by a verified finite element model. Method for shear buckling coefficient k was proposed using reverse analysis. V cr of a web-post employing proposed k agreed well with simulation results.
Shear buckling strengths of web-posts in a castellated steel beam with hexagonal web openings
Wang, Peijun (author) / Guo, Kangrui (author) / Liu, Mei (author) / Zhang, Lulu (author)
Journal of Constructional Steel Research ; 121 ; 173-184
2016-02-12
12 pages
Article (Journal)
Electronic Resource
English
Shear buckling strengths of web-posts in a castellated steel beam with hexagonal web openings
| British Library Online Contents | 2016
Shear buckling strengths of web-posts in a castellated steel beam with hexagonal web openings
| British Library Online Contents | 2016
Shear buckling strengths of web-posts in a castellated steel beam with hexagonal web openings
| Online Contents | 2016