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CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Cold-Formed Thin-Walled Steel Beams; Built-Up Box Section; Numerical Analysis; Moment Capacity; Design Method
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Design Method For Cold-Formed Thin-Walled Steel Beams With Built-Up Box Section, Ying-Lei Li, Yuan-Qi Li
Design Method For Cold-Formed Thin-Walled Steel Beams With Built-Up Box Section, Ying-Lei Li, Yuan-Qi Li
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Built-up sections has been extensively used in cold-formed thin-walled steel structures. The structural behaviour and moment capacity of built-up box beams, which is consisted of nested C and U-sections, are the major concerns in this paper. A finite element model for built-up box beams was firstly developed and validated by existing test results. The effects of screw configuration and the global buckling behaviour of built-up box beams were investigated by parametric analysis. Then, the simple superposition method and equivalent cross-section method were introduced and adopted to estimate the moment capacity of built-up box beams bending about major or minor axis. …