Structural Engineering and Mechanics

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Member capacity of columns with semi-rigid end conditions in Oktalok space frames

  • Published : 2000.07.25
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Abstract

The Oktalok nodal connection system is an aesthetic and efficient system. It has been widely used throughout Australia. The paper will briefly introduce the concept and application of the Oktalok nodal system. The existing design method is based on the assumption that the joints are pin-ended, i.e., the rotational stiffness of the joints is zero. However the ultimate capacity of the frame may increase significantly depending on the rotational stiffness of the joints. Stiffness tests and finite element simulations were carried out to determine the rotational stiffness of the Oktalok joints. Column buckling tests and non-linear finite element analyses were performed to determine the member capacity of columns with semi-rigid end conditions. A simple formulae for the effective length factor of column buckling is derived based on the above experimental and theoretical investigations.

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References

  1. Bazant,Z.P. and Cedolin, L. (1991), Stability of Structures - Elastic, Inelastic, Fracture and Damage Theories, Oxford University Press, New York.
  2. Bell, A.J. and Ho, T.Y. (1984) "Nodus space frame roof construction in Hong Kong", Proc. 3rd Int. Conf, on Space Struct., Elsevier, London, 1010-15.
  3. Brodka, J. et al. (1984), "Mostostal space grids-development and applications,", Proc. 3rd Int. conf. on Space Struct., Elsevier, London, 48-52.
  4. BSC. (1981), Nodus Space Frame-A Design Guide for Architects and Engineers. Tube Division, British Steel Corporation London.
  5. Ding Y. et al. (1984), "Mine-type bolted spherical joint space frame", Proc. 3rd Int. Conf. on Space structures, Elsevier, London. 815-819.
  6. Du Chateau, S. (1995), "Space structure-structure space", Lightweight Structures in Civil Engineering, 2, Magat, Warsaw, 756-766.
  7. Fastenau, W. (1984), "The Zublin space truss system", Proc. 3rd Int. Conf, on Space Structures, Elsevier, London, 879-884.
  8. Fentiman, H.G. (1966), "Developments in canada in the fabrication and construction of three-dimensional structures using system", Space Structures, 1073-1082, Oxford: Blackwell Scientific Publications.
  9. Gebhardt, D.H. (1984), "The power-strut space frame system", Proc. 3rd Int. Conf, on Space Structures, Elsevier, London, 53-58.
  10. Gerrits, J.M. (1984), "Space structures in the Netherlands since 1975", Proc. 3rd Int. Conf, on Space Structures, Elsevier, London, 28-35.
  11. Hsiao, S.C. (1966), "The basic elements of the unistrut space frame", space structures, Blackwell Scientific Publications, Oxford, 1083-1088.
  12. Iwata, M. et al. (1984), "Design and construction of a huge roof structure using NS space truss system", Proc. 3rd Int. Conf on Space Structures, Elsevier, London, 809-814.
  13. Key, P.W. and Hancock G. J. (1993), "A theoretical investigation of the column behaviour of cold-formed square hollow sections", Thin-Walled Structures, 16. 3I-64. https://doi.org/10.1016/0263-8231(93)90040-H
  14. Makowski, Z.S. (1965), Steel Space Structures, Michael Joseph Ltd., London.
  15. Pi, Y.L. and Tiahair, N.S. (1994), "Nonlinear inelastic analysis of steel beam-columns, I: Theory", J. Struct. Engrg., ASCE, 120(7), 2041-2051. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:7(2041)
  16. Pi, Y.L. and Tiahair, N.S. (1994), "Nonlinear inelastic analysis of steel beam-columns, II: Applications", J. Struct. Engrg., ASCE, 120(7), 2051-2061.
  17. Pi, Y.L. and Tiahair, N.S. (1995), "Prebuckling deformations and flexural-torsional buckling of arches", J. Struct. Engrg., ASCE, 121(9), 1313-1322. https://doi.org/10.1061/(ASCE)0733-9445(1995)121:9(1313)
  18. Pi, Y.L. and Tiahair, N.S. (1996), "In-plane inelastic buckling and strength of steel arches", J. Struct. Engrg., ASCE, 122(7), 734-747. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:7(734)
  19. Russ, R. et al. (1984), "Prefabricated steel space structures designed by Chemoprojekt Prague-CSSR", Proc. 3rd Int. Conf. on Space Structures, Elsevier, London, 42-47.
  20. SAA. (1991), "Structural steel hollow sections", Australian Standard, AS1163, Standards Association of Australia, Sydney.
  21. SAA. (1998), "Steel Structures", Australian Standard, AS4100, Standards Association of Australia, Sydney
  22. Shanmuganathan, S. and Kubik, L.A. (1993), "Optimization of CUBIC space frame structures", Proc. 4th Int. Conf. on Space Structures, Thomas Telford, London, 1766-1773.
  23. Spacetech. (1995), "Oktalok Space Frame System", Brochure, Spacetech Pty Ltd, Moorabbin, Victoria.
  24. Tanaka, T. et al. (1994), "The strength of ball joints in space trusses-Part III", Tubular Structures VI, Grundy, P. et al. (Eds), Balkema, Rotterdam, 123-131.
  25. Vangool, W.J. and Fentiman, H.G. (1984), "Triodetic structural frameworks for Les Forges Du Saint-Maurice National Historical Parks-Canada", Proc. 3rd Int. Conf. on Space Struct., Elsevier, London, 994-997.
  26. Zhao, X.L., Hancock, G.J., Trahair, N.S. and Y.L. Pi. (1995), "Lateral buckling of cold-formed RHS beams", Structural Stability and Design, Kitipornchai, Hancock and Bradford (Eds), Balkema, Rotterdam, 55-60.
  27. Zhao, X.L., Mckinlay, G., P. Lim, P. Joseph and Pi, Y.L. (1997), "Structural behaviour of a space frame utilising th oktalok nodal connection system", Australian Civil/Structural Engineering Transactions, IEAust., CE39(1), 35-41.

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