Influence of Material Effects on Structural Ductility of Compact I-Shaped Beams
Publication: Journal of Structural Engineering
Volume 126, Issue 11
Abstract
This paper outlines the results from a research program aimed at studying the impact that certain features of the uniaxial material response representation of steel have on the structural behavior of compact I-shaped beams subjected to a moment gradient loading. The ductility of this structural behavior is quantified by the rotation capacity of the beam. It is shown in this work that uniaxial material response features, such as yield stress value, magnitude of strain hardening slope, and presence or absence of a yield plateau, all play fundamental roles in influencing the structural ductility of steel beam response. Two governing inelastic modal manifestations that occur in compact I-shaped beams at failure are also discussed. Although both modes display a significant degree of coupling between local and global components in the manifestations, one mode displays significantly higher capacity and structural ductility than the other. It is noted that geometric proportions of the beam alone are insufficient to predict which of the two modes govern at failure. It is concluded that, to properly account for flexural ductility in applications involving high performance steel, specifications must include provisions that ensure flexural ductility through the simultaneous consideration of geometric and material effects.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
ABAQUS theory manual. (1998). Hibbitt, Karlsson and Sorensen, Inc., Pawtucket, R.I.
2.
American Institute of Steel Construction (AISC). ( 1993). Load and resistance factor design specification for structural steel buildings, Chicago.
3.
ASCE. ( 1971). Plastic design in steel, a guide and commentary, New York.
4.
Azizinamini, A., Yakel, A., and Mans, P. ( 1999). “Flexural capacity of HPS-70W bridge girders.” Final Rep., University of Nebraska at Lincoln, Neb.
5.
Canadian Standards Association (CSA). ( 1994). “Limit states design of steel structures.” CAN/CSA-S16.1-94, Rexdale, Ont., Canada.
6.
Climenhaga, J. J., and Johnson, R. P. (1972). “Moment-rotation curves for locally buckled beams.”J. Struct. Div., ASCE, 98(6), 1239–1254.
7.
Coffie, N. G. ( 1983). “Cyclic stress-strain and moment-curvature relationships for steel beams and columns.” PhD dissertation, Dept. of Civ. Engrg., Stanford University, Stanford, Calif.
8.
Earls, C. J. ( 1999). “On the inelastic failure of high strength steel I-shaped beams.” J. Constr. Steel Res., 49(1), 1–24.
9.
Earls, C. J. (2000). “Geometric factors influencing the structural ductility of compact I-shaped beams.”J. Struct. Engrg., ASCE, 126(7), 780–789.
10.
Earls, C. J., and Galambos, T. V. ( 1997). “Design recommendations for single angle flexural members.” J. Constr. Steel Res., 43(1–3), 65–85.
11.
European Committee for Standardization (CEN). ( 1992). “Design of steel structures, part 1: General rules and rules for building.” Eurocode 3, Brussels.
12.
Gioncu, V., Tirca, L., and Petcu, D. ( 1996). “Interaction between in-plane and out-of-plane plastic buckling of wide-flange section members.” Proc., Coupled Instabilities in Metal Struct. Symp., Imperial College Press, London, 273–282.
13.
Huang, P. C. ( 1994). “Finite element analysis of inelastic behavior of structural steel beams and bridge girders.” PhD dissertation, School of Civ. and Envir. Engrg., Cornell University, Ithaca, N.Y.
14.
Kahn, A. S., and Huang, S. ( 1995). Continuum theory of plasticity, Wiley, New York.
15.
Kemp, A. R., and Dekker, N. W. ( 1991). “Available rotation capacity in steel and composite beams.” The Struct. Engr., London, 69(5), 88–97.
16.
Lay, M. G., and Galambos, T. V. ( 1965). “Experiments on high strength steel members.” Bulletin No. 110, Welding Research Council, 1–16.
17.
Lukey, A. F., and Adams, P. F. (1969). “Rotation capacity of beams under moment gradient.”J. Struct. Div., ASCE, 93, 093(ST6), 1173–1188.
18.
Malvern, L. E. ( 1969). Introduction to the mechanics of a continuous media, Prentice-Hall, Englewood Cliffs, N.J.
19.
Reglamento de Construcciones para el Distrito Federal (RCDF). ( 1987). Normas Téchnicas Complementarias para diseno y Construcción de Esructuras Metálicas, Mexico. (in Spanish).
20.
Schilling, C. G. (1988). “Moment-rotation tests of steel bridge girders.”J. Struct. Engrg., 114(1), 134–149.
21.
White, D. W. ( 1994). “Analysis of the inelastic moment-rotation behavior of non-compact steel bridge girders.” Rep. CE-STR-94-1, School of Civ. Engrg., Purdue University, West Lafayette, Ind.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 126 • Issue 11 • November 2000
Pages: 1268 - 1278
History
Received: Jul 22, 1999
Published online: Nov 1, 2000
Published in print: Nov 2000
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.