Buckling Capacities of Monosymmetric I‐Beams
Publication: Journal of Structural Engineering
Volume 112, Issue 11
Abstract
The paper examines the elastic lateral buckling of simply supported monosymmetric I‐beams under transverse loads. Solutions are obtained in terms of the easily evaluated degree of beam monosymmetry parameter, ρ, and the beam parameter, It was found that the moment modification factors of double symmetric I‐beams presently used in design formulas to predict the buckling capacities of monosymmetric I‐beams could be unsafe. Consequently, alternative simple approximate formulas are derived from the energy method, based on the study of the buckled mode shapes of monosymmetric I‐beams. The proposed formulas retain the familiar form of the well‐known solution of beams under uniform moment. Moreover, the paper gives guidelines for achieving the optimum degrees of beam monosymmetry.
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References
1.
Anderson, J. M., and Trahair, N. S., “Stability of Monosymmetric Beams and Cantilevers,” Journal of the Structural Division, ASCE, Vol. 98, No. ST1, Jan., 1972, pp. 269–286.
2.
Brown, P. T., and Trahair, N. S., “Finite Integral Solution of Differential Equations,” Civil Engineering Transactions, Institution of Engineers, Australia, Vol. CE10, No. 2, 1968, p. 193.
3.
Kitipornchai, S., and Trahair, N. S., “Buckling Properties of Monosymmetric I‐Beams,” Journal of the Structural Division, ASCE, Vol. 106, No. ST5, May, 1980, pp. 941–958.
4.
Kitipornchai, S., Wang, C. M., and Trahair, N. S., “Buckling of Monosymmetric I‐Beams Under Moment Gradient,” Journal of the Structural Division, ASCE, Vol. 112, No. 4, Apr., 1986, p. 781.
5.
Nethercot, D. A., “Elastic Lateral Buckling of Beams,” Beams and Beam‐Columns, Stability and Strength, Chap. 1, R. Narayanan, Ed., Applied Science Publishers, London, U.K., 1983.
6.
Roberts, T. M., and Azizian, Z. G., “Instability of Monosymmetric I‐Beams,” Technical Notes, Journal of Structural Engineering, ASCE, Vol. 110, No. 6, June, 1984, p. 1415.
7.
Taylor, J. C., Dwight, J. B., and Nethercot, D. A., “Buckling of Beams and Struts: Proposals for a New British Code,” Proceedings, Conference on Metal Structures and the Practising Engineers, Institution of Engineers, Australia, Nov., 1974, p. 27.
8.
Timoshenko, S. P., and Gere, J. M., Theory of Elastic Stability, McGraw‐Hill, New York, N.Y., 1961.
9.
Trahair, N. S., The Behavior and Design of Steel Structures, Chapman and Hall, London, U.K., 1977.
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Copyright © 1986 ASCE.
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Published online: Nov 1, 1986
Published in print: Nov 1986
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