Session Dates
10 Nov 2016
Keywords and Phrases
Cold-Formed Thin-Walled Steel Beams; Built-Up Box Section; Numerical Analysis; Moment Capacity; Design Method
Abstract
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. Finally, a comparison was made between the predicted capacity and the numerical analysis results and the reasonability of these methods was assessed.
Department(s)
Civil, Architectural and Environmental Engineering
Research Center/Lab(s)
Wei-Wen Yu Center for Cold-Formed Steel Structures
Meeting Name
International Specialty Conference on Cold-Formed Steel Structures 2016
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2016 Missouri University of Science and Technology, All rights reserved.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Li, Ying-Lei and Li, Yuan-Qi, "Design Method for Cold-Formed Thin-Walled Steel Beams with Built-up Box Section" (2016). CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018). 6.
https://scholarsmine.mst.edu/isccss/23iccfss/session11/6
Design Method for Cold-Formed Thin-Walled Steel Beams with Built-up Box Section
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. Finally, a comparison was made between the predicted capacity and the numerical analysis results and the reasonability of these methods was assessed.
