Analysis of Lateral Torsional Buckling Strength of Single Symmetric I Beam

Abstract:

This study evaluates the variation of the bending moment strength of the single symmetrical and double symmetrical I-beam design. This study compares the use of a double-symmetric I-section with a large, small flange, a single-symmetric I-section with a large compression and large tension flange. The study shows that the four sections have the largest wing strength with double-symmetric I-section, and the inelastic and elastic strengths are similar to those of the single-symmetric I-section, especially the elastic region is almost the same. In the plastic phase, the double symmetrical flanges have a high cross-sectional strength. In the inelastic phase, the intensity of two individual symmetrical sections of the same area is close to a double symmetrical section. The use of a single symmetrical I-beam can be preferred over a double-symmetric I-beam. This study provides a single-symmetric I-beam strength difference analysis, providing users with a variety of options for comparing cross-sections.

• Periodical: Key Engineering Materials (Volume 846)
• Pages: 226-231
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.846.226
• Online since: June 2020
• Authors: Wei Hsun Hsu, Yu Xin Liu, Kun Ze Ho, Wei Ting Hsu*
• Keywords: AISC(2017) Specification, Compression Flange, Lateral-Torsional Buckling (LTB), Single Symmetric I Beam

References

[1] Vlasov VZ., Thin-walled elastic bars,, Israel Program for Scientific Translations, Jerusalem, (1961).

[2] A. Andradea, D. Camotim, P. Providência e Costa: Journal of Constructional Steel Research, Vol. 63 (2007), pp.894-908.

[3] D.A. Nethercot: The Institution of Structural Engineers Vol. 51 (1973), pp.161-168.

[4] A.K. Dessouk, AB. AbdelRahim, D.O. Abdul Hameed: HBRC Journal Vol.11 (2014), pp.176-193.

[5] Albert S. Surla, Sung Yong Kang, Jong Sup Park: Journal of Constructional Steel Research, Vol.114 (2015), pp.325-337.

[6] Kathleen Mae Gelera, Jong sup Park, Elastic Lateral Torsional Buckling Strength of Monosymmetric Stepped I-beams, ,KSCE Journal of Civil Engineering, Vol.16, No.5 pp.785-793.(2011).

DOI: 10.1007/s12205-012-1255-8

[7] H.Ozbasaran, R.Aydin,M.Dogan,An alternative design procedure for lateral-torsional buckling of cantilever I-beam,,Thin-Walled Structures,Vol.90, pp.232-242,(2015).

DOI: 10.1016/j.tws.2015.01.021

[8] N.S. Trahair,Lateral-distortional bucking of monorails, ,Engineering Structures, Vol.31, No.12, pp.2837-2879,(2009).

DOI: 10.1016/j.engstruct.2009.07.013

[9] Kitipornchai, S.and Trahair, N.S., Buckling Properties of Mono-symmetric I-Beam, ,Journal of the Structural Division, ASCE, 106, St5. pp.941-957,(1980).

DOI: 10.1061/jsdeag.0005441

[10] American institute of steel construction: The AISC Steel Construction Manual, 15th Ed. and 2015 Specification Seminar (Trans Tech Publications, USA 2015).