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Buckling Analysis of Two-Span Continuous Beams with Lateral Elastic Brace under Uniform Load

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Abstract:

Both total potential energy and buckling equation of two-span continuous beam with lateral elastic brace under uniform load are deduced, based on energy variation method and the principle of minimum potential energy. Buckling of H-beams is simulated by ANSYS software, then compared to theoretical value, validated its rationality. High precision buckling moment formula is regressed using 1stOpt which is a famous mathematical optimization analysis software in China. The relationship between lateral brace stiffness and buckling moment is obtained. Results: with lateral brace stiffness increases, critical bending moment of beam increases within up-limit, e.g. when lateral brace stiffness increases to certain extent, buckling moment no longer increases.

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Info:

Periodical:

Advanced Materials Research (Volumes 163-167)

Pages:

641-645

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.163-167.641

Citation:

Cite this paper

Online since:

December 2010

Authors:

Wen Fu Zhang, Hai Yan Sui, Zong Wang, Jing Ji

Keywords:

Continuous Beam, Energy Variation Method, Lateral Brace, Lateral Torsional Buckling

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