Structural Behavior of Stiffened Knee Joints with Thin Webs
Publication: Journal of Structural Engineering
Volume 117, Issue 9
Abstract
Ten experiments concerning the carrying behavior of square knee joints are performed. It is shown that, analogous to transversely stiffened girders with thin webs, tension fields that are anchored on flanges also develop in knee joints. The load capacity of the knee joint is limited by the formation of plastic hinges in the flanges. Comparison with the buckling load shows that a stiffened knee joint with a thin web plate exhibits considerable overcritical load reserves. The failure mechanism of stiffened, square knee joints is described using a simple tension field model. This model introduces two load‐carrying parts: one carried by a shear field, the other by a tension field. The calculated load capacities are approximately 10% greater than the experimentally determined capacities. Further tests are proposed to verify the model and to derive a design concept.
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References
1.
Bodarski, Z. (1965). “The stress state in a stiffened web plate of a three‐legged, nonsymmetrical joint with curved inner flanges,” thesis presented to Wroclaw Technical University, at Wroclaw, Poland, in partial fulfillment of the requirements for the degree of Doctor of Philosophy (in Polish).
2.
Gaylord, E. H., and Gaylord, C. N. (1990). Structural engineering handbook. 3d Ed., McGraw‐Hill Publishing Company, New York, N.Y.
3.
Gray, C. S., et al. (1960). Steel designers manual. 2d Ed., Crosby Lockwood, London, U.K.
4.
Marsh, C. (1982). “Theoretical model for collapse of shear webs.” J. Eng. Mech. Div., ASCE, 108(5), 819–832.
5.
Mayer, M. (1962). Die Sicherheit der Bauwerke und ihre Berechnung nach Grenzkräften anstatt nach zulässigen Spannungen. Springer Verlag, Berlin, Germany (in German).
6.
Narayanan, R., and Adorisio, D. (1983). “Model studies on plate girders.” J. Strain Anal., 18(2), 111–117.
7.
Protte, W. (1979). “Zur Beulung von Rahmenecken.” Der Stahlbau, 48(4), 123–125(in German).
8.
Scheer, J., and Pasternak, H. (1989). “Zum Nachweis von Vollwandträgern mit dünnen Stegen und Quersowie auch Längssteifen in Regelwerken.” Bauingenieur, 64(3), 121–130 and 548(in German).
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Copyright © 1991 ASCE.
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Published online: Sep 1, 1991
Published in print: Sep 1991
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