Thin-Walled Beam-Columns. I: Sequential Loading and Moment Gradient Tests
Publication: Journal of Structural Engineering
Volume 125, Issue 11
Abstract
This paper presents tests on thin-walled I-sections in combined compression and minor-axis bending. The tests were conducted in a rig consisting of two interlinked actuators applying axial force and end moment. Tests were performed using sequential application of axial force and moment, as well as proportional loading with a moment gradient. The results are compared with the results of proportionally loaded members described in a companion paper. It is shown that sequential loading produces beam-column strengths that are greater than or equal to those obtained using proportional loading. It is also shown that the beam-column strength of members loaded with a moment gradient exceeds that of beam-columns in uniform bending. The latter result is attributed to the effect of greater amplitude modulation of the local buckling deformations in beam-columns with moment gradient.
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References
1.
Beedle, I. S., Ready, J. A., and Johnston, B. G. (1950). “Tests of columns under combined thrust and moment.” Proc., Soc. for Experimental Stress Anal., 8, 109.
2.
Bijlaard, P. P., and Fisher, G. D. (1953). “Column strength of H-sections and square tubes in postbuckling range of component plates.” TN 2994, National Advisory Committee for Aeronautics, Washington, D.C.
3.
Bijlaard, P. P., Fisher, G. D., and Winter, G. (1955). “Eccentrically loaded end restrained columns.” Trans., ASCE, 120, 1070–1096.
4.
Chick, C. G., and Rasmussen, K. J. R. (1995). “Tests of thin-walled I-sections in combined compression and minor axis bending. Part I—Sequential loading and moment gradient tests.” Res. Rep. R712, School of Civ. and Min. Engrg., University of Sydney, Australia.
5.
Chick, C. G., and Rasmussen, K. J. R. (1999). “Thin-walled beam-columns: Proportional loading tests.”J. Struct. Engrg., ASCE, 125(11), 1267–1276.
6.
Davids, A. J., and Hancock, G. J. (1986). “Compression tests of long welded I-section columns.”J. Struct. Engrg., ASCE, 112(10), 2281–2297.
7.
Galambos, T. V. (1968). Structural members and frames. Prentice-Hall, Englewood Cliffs, N.J.
8.
Galambos, T. V. (1988). Guide to stability design criteria for metal structures. 4th Ed., Wiley, New York.
9.
Galambos, T. V., and Ketter, R. L. (1959). “Columns under combined bending and thrust.” Proc., ASCE, 2(1990), 1–30.
10.
Galambos, T. V., and Ketter, R. L. (1961). “Columns under combined bending and thrust.” Trans. ASCE, 126(1), 1–25.
11.
Hasham, A. S., and Rasmussen, K. J. R. (1997). “Member capacity of thin-walled I-sections in combined compression and major axis bending.” Res. Rep. R746, Dept. of Civ. Engrg., University of Sydney, Sydney, Australia.
12.
Hasham, A. S., and Rasmussen, K. J. R. (1998). “Capacity of thin-walled I-section beam-columns.”J. Struct. Engrg., ASCE, 124(4), 351–359.
13.
Ketter, R. L., Beedle, L. S., and Johnston, B. G. (1952). “Column strength under combined bending and thrust.” Welding J., Res. Supplement, 31(12), 607s–662s.
14.
Ketter, R. L., Kaminsky, E. L., and Beedle, L. S. (1955). “Plastic deformations of wide-flange beam columns.” Trans. ASCE, 120, 1028–1061.
15.
Key, P. W., Hasan, S. W., and Hancock, G. J. (1988). “Column behaviour of cold-formed hollow sections.”J. Struct. Engrg., ASCE, 114(2), 390–407.
16.
Rasmussen, K. J. R., and Hancock, G. J. (1989). “Compression tests of welded channel section columns.”J. Struct. Engrg., ASCE, 115(4), 789–808.
17.
“Steel structures.” (1998). AS 4100, Standards Australia, Sydney, Australia.
18.
Sully, R. M., and Hancock, G. J. (1995). “Behavior of cold-formed slender SHS beam-columns. Res. Rep. R707 School of Civil and Mining Engineering, University of Sydney, Sydney, Australia.
19.
Sully, R. M., and Hancock, G. J. (1996). “Behavior of cold-formed SHS beam-columns.”J. Struct. Engrg., ASCE, 122(3), 326–336.
20.
Trahair, N. S., and Bradford, M. A. (1998). The behaviour and design of steel structures to AS4100. 3rd Ed.—Australian, E & FN Spon, London.
21.
Van Kuren, R. C., and Galambos, T. V. (1964). “Beam column experiments.”J. Struct. Div., ASCE, 90(2), 223–256.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 125 • Issue 11 • November 1999
Pages: 1257 - 1266
History
Received: Aug 26, 1998
Published online: Nov 1, 1999
Published in print: Nov 1999
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