Local Stability of Filled and Encased Steel Sections
Publication: Journal of Structural Engineering
Volume 121, Issue 10
Abstract
The buckling of the component plates of structural sections may be avoided by ensuring that their breadth-to-thickness ( b /t) ratios are less than the specified limit for the prevailing loading condition. Limiting b /t ratios apply to plates that are free to buckle onto either side of their initial plane. For sections that are filled or encased with concrete it is likely that the component plates can only buckle away from the interface with this material. The derivation of b /t ratios for this class of plates is presented in this paper. The energy method is used to equate the work required to load the plate, to the work required to deform the plate into a buckled shape. Orthotropic plate theory and the flow theory of plasticity are used to evaluate b /t ratios for plates subjected to uniaxial compression, combinations of bending and axial loading, and shear. The resulting b /t ratios are higher than those for plates not restrained by intimate contact with concrete. The benefits of using infilling or encasement to improve the structural behavior of steel sections are also discussed.
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References
1.
“Design of steel structures, part 1.1 general rules and rules for building.” (1992). Eurocode 3, ENV 1993-1-1, Eur. Committee for Standardisation. Brussels, Belgium.
2.
Haaijer, G.(1957). “Plate buckling in the strain hardening range.”J. Engrg. Mech. Div., ASCE, 83(2), 12121–121247.
3.
Haaijer, G., and Thurlimann, B.(1958). “On inelastic buckling in steel.”J. Engrg. Mech. Div., ASCE, 84(2), 158110–158148.
4.
Kemp, A. R. (1986). “Factors affecting the rotation capacity of plastically designed members.”The Struct. Engr., London, England, 64B(2), 28–35.
5.
“Limit state steel structures.” (1989). ASI 250, Standards Assocation of Australia. Sydney, Australia.
6.
Load and resistance factor design specification for structural steel buildings. (1986). 1st Ed., Am. Inst. of Steel Constr. (AISC), Inc., Chicago, Ill.
7.
Ramberg, W., and Osgood, R. (1943). “Description of stress-strain curves by three parameters.”NACA, TN902, Nat. Advisory Committee for Aeronautics.
8.
“Structural use of steelwork in building. Part 1: Code of practice for design in simple and continuous construction: hot rolled sections.” (1985). B.S. 5950, British Standards Inst., London, England.
9.
Timoshenko, S. P., and Gere, J. M. (1982). Theory of elastic stability . McGraw-Hill Book Co., Inc., New York, N.Y.
10.
Wright, H. D.(1993). “Buckling of plates in contact with a rigid medium.”The Struct. Engr., London, England, 71(12), 209–215.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 121 • Issue 10 • October 1995
Pages: 1382 - 1388
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Oct 1, 1995
Published in print: Oct 1995
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