Influence of load position on critical lateral torsional buckling moment of laterally restrained beam at tense flange

Asian Journal of Civil Engineering - Tập 19 - Trang 839-848 - 2018
T. Belaid1, F. Ammari1, R. Adman1
1Faculty of Civil Engineering, University of Science and Technology Houari Boumediene (USTHB), Algiers, Algeria

Tóm tắt

This paper presents an alternative computation approach for the critical moment of lateral-torsional buckling of a simply supported steel beam with continuous lateral elastic restraint. The total potential energy is first established for the lateral-torsional buckling of beams under uniform bending moment and uniform loading. By introducing dimensionless parameters, the dimensionless critical buckling moment equation is given. Effects of lateral restraints stiffness on buckling moment are studied for three positions of loads. Effects of torsional stiffness on critical moment are also studied. A critical buckling moment formula, for a simply supported steel beam with continuous lateral rigid restraint at the tensile flange, is proposed. It was noted that restraint of the tensile flange has a significant influence on the behavior of simply supported beam.

Tài liệu tham khảo

Ammari, F., Adman, R., & Boukhalfa, D. (2013). Lateral buckling stability of trussed beam with under uniformly distributed loads. International Journal of Engineering Science and Technology, 5(02), 277–285.

Anbarasu, M. (2017). A numerical investigation of local–distortional–lateral-torsional buckling interaction of cold-formed steel lipped channel beams. Asian Journal of Civil Engineering (Bhrc), 18(4), 643–656.

Balázs, I., & Melcher, J. (2015). Lateral torsional buckling of steel thin-walled beams with lateral restraints. Lateral, 1, 31094.

Beyer, A., Galéa, Y., Bureau, A., & Boissonnade, N. (2015). Elastic Stability of uniform and non-uniform members with arbitrary boundary conditions and intermediate lateral restraints. Paper presented at the Structural Stability Research Council Annual Stability Conference, Nashville, Tennessee, USA

Bradford, M. A. (1997). Lateral-distortional buckling of continuously restrained columns. Journal of Constructional Steel Research, 42(2), 121–139.

Bradford, M. A., & Ronagh, H. R. (1997). Generalized elastic buckling of restrained I-beams by FEM. Journal of Structural Engineering, 123(12), 1631–1637.

Bureau, A. (2005). SN003 NCCI: Elastic critical moment for lateral torsional buckling: Tech. rept. Access Steel. Retrieved from http://www.access-steel.com.

de Oliveira, J. P. S., Calenzani, A. F. G., Fakury, R. H., & Ferreira, W. G. (2016). Elastic critical moment of continuous composite beams with a sinusoidal-web steel profile for lateral-torsional buckling. Engineering Structures, 113, 121–132.

Galambos, T. V., & Surovek, A. E. (2008). Structural stability of steel: concepts and applications for structural engineers. New York: Wiley.

Galéa, Y. (2003). Elastic critical lateral torsional buckling moment of beams—Presentation of LTBeam. (in French). Revue Construction Métallique, 2, 47–76.

Ings, N., & Trahair, N. (1984). Lateral buckling of restrained roof purlins. Thin-walled Structures, 2(4), 285–306.

Khelil, A., & Larue, B. (2008). Simple solutions for the flexural-torsional buckling of laterally restrained I-beams. Engineering Structures, 30(10), 2923–2934.

Kim, B., Li, L.-Y., & Edmonds, A. (2016). Analytical solutions of lateral–torsional buckling of castellated beams. International Journal of Structural Stability and Dynamics, 16(08), 1550044.

Larue, B., Khelil, A., & Gueury, M. (2007). Elastic flexural–torsional buckling of steel beams with rigid and continuous lateral restraints. Journal of Constructional Steel Research, 63(5), 692–708.

Lee, H., Nguyen, C., Moon, J., & Joo, H. (2011). Lateral-torsional buckling of discretely-braced i-girder. Procedia Engineering, 14, 264–271.

Lei, J.-S., & Li, L.-Y. (2017). Combined web distortional and lateral-torsional buckling of partially restrained I-section beams. International Journal of Mechanical Sciences, 131, 107–112.

Mantha, C., Chen, X., & Liu, Y. (2015). Lateral torsional buckling of steel twin plate girder systems with torsional braces only. Canadian Journal of Civil Engineering, 43(2), 182–192.

McCann, F., Gardner, L., & Wadee, M. A. (2013). Design of steel beams with discrete lateral restraints. Journal of Constructional Steel Research, 80, 82–90.

Mohammadi, E., Hosseini, S. S., & Rohanimanesh, M. S. (2016). Elastic lateral-torsional buckling strength and torsional bracing stiffness requirement for monosymmetric I-beams. Thin-walled Structures, 104, 116–125.

Mohri, F., Damil, N., & Potier-Ferry, M. (2010). Linear and non-linear stability analyses of thin-walled beams with monosymmetric I sections. Thin-walled Structures, 48(4), 299–315.

Ozbasaran, H., Aydin, R., & Dogan, M. (2015). An alternative design procedure for lateral–torsional buckling of cantilever I-beams. Thin-walled Structures, 90, 235–242.

Park, J. S., Stallings, J. M., & Kang, Y. J. (2004). Lateral–torsional buckling of prismatic beams with continuous top-flange bracing. Journal of Constructional Steel Research, 60(2), 147–160.

Timoshenko, S. P., & Gere, J. M. (1966). Théorie de la stabilité élastique. Paris: Dunod,| c1966, 2eme ed.

Vrcelj, Z., & Bradford, M. A. (2009). Inelastic restrained distortional buckling of continuous composite T-beams. Journal of Constructional Steel Research, 65(4), 850–859.

Wang, Q. (2002). Spline finite member element method for lateral buckling of thin-walled members with openings. Asian Journal of Civil Engineering (BHRC), 03(01), 1–12.

Yerudkar, D., & Vesmawala, G. (2017). Finite element analysis research on buckling behaviour of unrestrained stiffened cold formed steel channel and zed sections. Asian Journal of Civil Engineering (BHRC), 18(7), 1041–1057.

Yilmaz, T., & Kirac, N. (2017). Analytical and parametric investigations on lateral torsional buckling of European IPE and IPN beams. International Journal of Steel Structures, 17(2), 695–709.

Yura, J. A. (2001). Fundamentals of beam bracing. Engineering Journal-American Institute of Steel Construction, 38(1), 11–26.

Zhang, W.-F., Liu, Y.-C., Hou, G.-L., Chen, K.-S., Ji, J., Deng, Y., et al. (2016). Lateral-torsional buckling analysis of cantilever beam with tip lateral elastic brace under uniform and concentrated load. International Journal of Steel Structures, 16(4), 1161–1173.

Zhang, W. F., Sui, H. Y., Wang, Z., & Ji, J. (2011). Buckling analysis of two-span continuous beams with lateral elastic brace under uniform load. Paper presented at the Advanced Materials Research.

Zhang, L., & Tong, G. (2004). Flexural–torsional buckling of thin-walled beam members based on shell buckling theory. Thin-Walled Structures, 42(12), 1665–1687.

Zhang, L., & Tong, G.-S. (2016). Lateral buckling of simply supported C-and Z-section purlins with top flange horizontally restrained. Thin-Walled Structures, 99, 155–167.

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Asian Journal of Civil Engineering

Tập 19

839-848

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