Analytical Models for the Initial Stiffness and Plastic Moment Capacity of an Unstiffened Top and Seat Angle Connection under a Shear Load

Yang, Jae-Guen;Jeon, Seong-Sam

  • Published : 20090900

Abstract

This study was conducted to propose analytical models that can predict the initial stiffness and plastic moment capacity of an unstiffened top and seat angle connection. These analytical models were developed by considering the moment-rotation curves, plastic hinge lines, and failure modes of an unstiffened top and seat angle connection. In the development of these analytical models, the effects of the prying action and the moment-shear interaction of a top angle were also considered. Application feasibility of these analytical models was verified by comparing these models' results with those obtained from using the Chen-Kishi and Faella models, as well as the Nethercot experimental test data. Four tests were conducted to obtain the moment-rotation curves and failure modes of an unstiffened top and seat angle connection under shear.

Keywords

References

  1. Altman, W. G., Azizinamini, A., and Bradburn, J. H. (1982). 'Moment-rotation characteristics of semi-rigid steel beam-to-column connections.' The Civil Eng. Dept., Univ. of South Carolina, Columbia, Sc
  2. American Institute of Steel Construction (AISC) (2005). Manual of steel construction (13th ed), Chicago
  3. Azizinamini, A., Bradburn, J. H., and Radziminski, J. B. (1985). 'Static and cyclic behavior of semi-rigid steel beam-column connections.' Structural Res. Studies, Dept. of Civil Eng., Univ. of South Carolina, Columbia, Sc
  4. Astaneh, A. (1985). 'Procedure for the design and analysis of hanger-type connections.' Engng J AISC, 22, pp. 63-66
  5. Brockenbrough, R. L. (1998). 'Fabrication guidelines for cold bending.' Pittsburgh, PA: Brocken Brough and Associates
  6. Chen, W. F. (1987). Joint flexibility in steel frames. Elsevier Applied Science
  7. Chen, W. F. and Kishi, N. (1989). 'Moment-rotation relation of top and seat angle connections.' Moscow, USSR: Proc. of the Int. Colloquium on Bolted and Special Connections, May pp. 15-20
  8. Chen, W. F. and Lui, E. M. (1991). Stability design of steel frames. CRC Press
  9. Davison, J. B., Kirby, P. A., and Nethercot, D. A. (1987). 'Rotational Stiffness Characteristics of Steel Beam-to- Column Connections.' Joint Flexibility in Steel Frames, Chen, W. F. (ed.), Elsevier Applied Science, pp. 17-54
  10. Faella, C., Piluso, V., and Rizzano, G. (1996). 'Prediction of the flexural resistance of bolted connections with angles.' IABSE Colloquium on Semi-Rigid Structural Connections, pp. 25-27
  11. Faella, C., Piluso, V., and Rizzano, G. (1998). 'Experimental analysis of bolted connections: Snug vs. preloaded bolts.' J Struct Engng, ASCE, 124, pp. 765-774 https://doi.org/10.1061/(ASCE)0733-9445(1998)124:7(765)
  12. Faella, C., Piluso, V., and Rizzano, G. (2000). Structural steel semi-rigid connections: Theory, design, and software. CRC Press
  13. Hechtman, R. A., and Johnston, B. G. (1947). 'Riveted semirigid beam-to-column building connections.' Bethlehem, PA: Progress Report No. 1, AISC research at Lehigh University
  14. Jaspart, J. P. (1991). Etude de la Semi-rigidite des Noeuds Poutre-Colonne et son Influence sur la Resistance et la Stabilite des Ossatures en Acier. Ph.D. thesis, University of Liege, Belgium
  15. Jaspart, J. P. and Maquoi, R. (1991). 'Plastic capacity of end-plate and flange cleated connections: Prediction and design rules.' Pittsburgh, USA: Second International Workshop on Connections in Steel Structures
  16. Jaspart, J. P., Steenhuis, M., and Weinand, K. (1995). 'The stiffness model of Revised Annex J of Eurocode 3.' Trento, Italy: Third International Workshop on Connection in Steel Structures
  17. Kishi, N. and Chen, W. F. (1990). 'Moment-rotation relations of semi-rigid connections with angles.' J Struct Engng, ASCE, 116, pp. 1813-1834 https://doi.org/10.1061/(ASCE)0733-9445(1990)116:7(1813)
  18. Lorenz, R. F., Kato, B., and Chen, W. F. (1992). Semi-rigid connections in steel frames. CTBUH: McGraw-Hill
  19. Richard, R. M., & Abbott, B. J. (1975). 'Versatile elastic-plastic stress-strain formula.' J Eng Mech Div, ASCE, 101(EM4), pp. 511-515
  20. Richard, R. M., Hsia, W. K., and Chmielowiec, M. (1988). 'Derived moment-rotation curves for double-framing angles.' Comput & Struct, Elsevier Science Ltd., 3, pp. 485-494 https://doi.org/10.1016/0045-7949(88)90281-7
  21. Roeder, C. W. and Dailey, R. H. (1989). 'The results of experiments on seated beam connections.' Eng. J, AISC, 26, 3, (3rd qtr.), pp. 90-95
  22. Salmon, C. G. and Johnston, J. E. (1998). Steel structures: Design and behavior (4th ed). Harper Collins
  23. Thornton, W. A. (1985). 'Prying action: A general treatment.' Engng J, AISC, 22, pp. 67-75
  24. Thornton, W. A. (1992). 'Strength and serviceability of hanger connections.' Engng J, AISC, 29, pp. 145-149
  25. Thornton, W. A. (1996). 'A rational approach to the design of tee shear connections.' Engng J, AISC, 33, pp. 34-37
  26. Thornton, W. A. (1997). 'Strength and ductility requirements for simple shear connections with shear and axial load.' Proceedings of the National Steel Construction Conference, AISC, 38, pp. 1-17
  27. Yang, J. G. and Lee, G. Y. (2005). 'Design specifications for low-rise steel frames with double-angle connections.' Report No. KRF-2005-202-D00530, Korea Research Foundation
  28. Yang, J. G. and Jeon, S. S. (2008). 'Analytical models for the initial stiffness and plastic tensile-load capacity of a double-angle connection.' International Journal of Steel Structures, 8(3), pp. 237-248