Finite-Element Modeling of the Nonlinear Behavior of Bolted T-Stub Connections
Publication: Journal of Structural Engineering
Volume 132, Issue 6
Abstract
This paper describes a finite element model for the characterization of the nonlinear behavior of bolted T-stub connections that idealize the tension zone of bolted joints. Two different types of T-stub elements are considered: rolled profiles that are cut along the web, and two plates, flange and web, that are welded in a T shape by means of a continuous fillet weld. The results of existing experimental work are used to calibrate the models. It is found that the numerical approach allows the quantitative actual response to be accurately reproduced. In the case of welded T-stubs, the differences between the numerical model and the experiments are greater due to the effects of residual stresses and modified mechanical properties close to the weld toe, which are not easy to quantify. A parametric study is also undertaken to provide insight into the overall behavior, failure modes, and deformation capacity of the various specimens. A proposal for prediction of failure criteria of these simple connections is also presented and discussed.
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Acknowledgments
Financial support from the Portuguese Ministry of Science and Higher Education (Ministério da Ciência e Ensino Superior) under contract grants from PRODEP and FCT (Grant No. UNSPECIFIEDSFRH/BD/5125/2001) for Ana M. Girão Coelho is gratefully acknowledged.
References
American Institute of Steel Construction (AISC). (2005). “Single unified structural steel code for steel buildings.” Chicago (in preparation).
Astaneh, A. (1985). “Procedure for design and analysis of hanger-type connections.” Eng. J., 22(2), 63–66.
Bursi, O. S., and Jaspart, J. P. (1997). “Benchmarks for finite-element modeling of bolted steel connections.” J. Constr. Steel Res., 43(1), 17–42.
European Committee for Standardization (CEN). (2003). “Eurocode 3: prEN 1993-1-8: 20xx, Part 1.8: Design of joints.” Eurocode 3: Design of steel structures, Stage 49, Brussels, Belgium.
Gebbeken, N., Wanzek, T., and Petersen, C. (1997). “Semi-rigid connections, T-stub model-Report on experimental investigations.” Rep. No. 97/2, Institut für Mechanik und Static, Univ. des Bundeswehr München, Munich, Germany.
Gioncu, V., Matescu, G., Petcu, D., and Anastasiades, A. (2000). “Prediction of available ductility by means of local plastic mechanism method: DUCTROT computer programme.” Moment resistant connections of steel frames in seismic areas: Design and reliability, F. Mazzolani, ed., Spon, London, 95–146.
Girão Coelho, A. M. (2004). “Characterization of the ductility of bolted end plate beam-to-column steel connections.” Ph.D. dissertation, Univ. of Coimbra, Coimbra, Portugal.
Girão Coelho, A. M., Bijlaard, F., Gresnigt, N., and Simões da Silva, L. (2004). “Experimental assessment of the behaviour of bolted T-stub connections made up of welded plates.” J. Constr. Steel Res., 60, 269–311.
Kato, B., and McGuire, W. (1973). “Analysis of T-stub flange-to-column connections.” J. Struct. Div. ASCE, 99(5), 865–888.
LUSAS 13.3. (2000). Theory manual, Version 13.3, Finite Element Analysis Ltd, Surrey, U.K.
Nair, R. S., Birkemoe, P. C., and Munse, W. H. (1974). “High strength bolts subject to tension and prying.” J. Struct. Div. ASCE, 100(2), 351–372.
Packer, J. A., and Morris, L. J. (1977). “Discussion of a limit state design method for the tension region of bolted beam-to-column connections.” J. Struct. Div. ASCE, 104(9), 1546.
Piluso, V., Faella, C., and Rizzano, G. (2001a). “Ultimate behavior of bolted T-stubs. I: Theoretical model.” J. Struct. Eng., 127(6), 686–693.
Piluso, V., Faella, C., and Rizzano, G. (2001b). “Ultimate behavior of bolted T-stubs. II: Model validation.” J. Struct. Eng., 127(6), 694–704.
Swanson, J. A. (1999). “Characterization of the strength, stiffness and ductility behavior of T-stub connections.” Ph.D. dissertation, Georgia Institute of Technology, Atlanta.
Swanson, J. A., Kokan, D. S., and Leon, R. T. (2002). “Advanced finite-element modeling of bolted T-stub connection components.” J. Constr. Steel Res., 58, 1015–1031.
Thornton, W. A. (1985). “Prying action—A general treatment.” Eng. J., 22(2), 67–75.
Vasarhelyi, D. D., and Chiang, K. C. (1967). “Coefficient of friction in joints of various steel.” J. Struct. Div. ASCE, 93(4), 227–243.
Virdi, K. S. (1999). “Guidance on good practice in simulation of semi-rigid connections by the finite element method.” Numerical Simulation of Semi-Rigid Connections by the Finite Element Method, COST C1, Rep. of Working Group 6—Numerical Simulation, K. S. Virdi, ed., Brussels, Belgium, 1–12.
Wanzek, T., and Gebbeken, N. (1999). “Numerical aspects for the simulation of end plate connections.” Numerical Simulation of Semi-Rigid Connections by the Finite Element Method COST C1, Rep. of Working Group 6—Numerical Simulation, K. S. Virdi, ed., Brussels, Belgium, 13–31.
Weynand, K., Jaspart, J. P., and Steenhuis, M. (1995). “The stiffness model of revised Annex J of Eurocode 3.” Connections in Steel Structures III; Proc. 3rd Int. Workshop on Connections, R. Bjorhovde, A. Colson, and R. Zandonini, eds., Trento, Italy, 441–452.
Yee, Y. L., and Melchers, R. E. (1986). “Moment-rotation curves for bolted connections.” J. Struct. Eng., 112(3), 615–635.
Zajdel, M. (1997). “Numerical analysis of bolted tee-stub connections.” TNO-Rep. No. 97-CON-R-1123.
Zoetemeijer, P. (1974). “A design method for the tension side of statically loaded bolted beam-to-column connections.” Heron, 20(1), 1–59.
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© 2006 ASCE.
History
Received: Jan 21, 2003
Accepted: Oct 17, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
Notes
Note. Associate Editor: Sashi K. Kunnath
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