2025 Volume 90 Issue 832 Pages 758-766
This paper focuses on cases where folded-roof plates are attached to H-shaped steel purlins. The folded plates were joined to the tight frame using a fitting connection, and the tight frame was then attached to the purlins using self-drilling screws. Experiments on flexural-torsional buckling were conducted on H-shaped steel purlins equipped with these folded-roof plates. In conjunction with the results from finite element analysis, which modeled the continuous stiffening effect of the folded-roof plates using horizontal and rotational stiffening rigidities, the study attempted a quantitative evaluation of the continuous stiffening effect of the folded plates on flexural-torsional buckling.
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