Structural Engineering and Mechanics

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Design of space truss structures

  • Published : 1998.03.25
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Abstract

Space truss design usually involves two main assumptions: that truss members are pin-ended, and compression members possess brittle post-buckling characteristics. The validity of these assumptions in the design of a new group of space trusses with continuous chords and eccentric joints is questionable. With chord member continuity and the consequent improvement in compression member behaviour, current design practice might be too conservative. In this paper, it is shown that substantial improvements in overall truss strength have resulted when the true member end conditions are considered, thus indicating potential savings in truss weight with considerable magnitudes.

Keywords

References

  1. British Standards Institute (1985), BS 5950: Structural Use of Steelwork in Building, Part 1.
  2. Codd, E.T. (1984), "Low technology space frames", 3rd Int. Conference on Space Structures, Surrey, UK, 955-960.
  3. EI-Sheikh, A.I. and McConnel, R.E. (1993), "Experimental study of behaviour of composite space trusses", J. Struct. Div., ASCE, 119(3), 747-766. https://doi.org/10.1061/(ASCE)0733-9445(1993)119:3(747)
  4. EI-Sheikh, A.I. (1995), "Sensitivity of space trusses to member geometric imperfections", Int. J. of Space Structures, 10(2), 89-98. https://doi.org/10.1177/026635119501000202
  5. EI-Sheikh, A.I. (1996), "Development of a new space truss system", J. of Constructional Steel Research, 37(3), 205-227. https://doi.org/10.1016/0143-974X(96)00004-1
  6. Hanaor, A. (1985), "Analysis of double-layer grids with material non-linearities- a practical approach", J. of Space Structures, 1, 33-40. https://doi.org/10.1177/026635118500100105
  7. Hanaor, A., Marsh, C. and Parke, G.A.R. (1989), "Modification of behaviour of double-layer grids: overview", J. Struct. Engng, ASCE, 115(5), 1021-1037. https://doi.org/10.1061/(ASCE)0733-9445(1989)115:5(1021)
  8. Hanaor, A. (1995a), "Design and behaviour of reticulated spatial structural systems", Int. J. of Space Structures, 10(3), 139-149. https://doi.org/10.1177/026635119501000302
  9. Hanaor, A. (1995b), "Characteristics of prefabricated spatial frame systems", Int. J. of Space Structures, 10(3), 151-173. https://doi.org/10.1177/026635119501000303
  10. Hanaor, A. (1995c), "A summary survey of prefabricated spatial frame systems", Int. J. of Space Structures, 10(3), 175-185. https://doi.org/10.1177/026635119501000304
  11. Kuleib, M.M.A. (1989), The Analysis and Behaviour of Composite Space Frames with Profiled Steel Sheet Floors, PhD Thesis, University of Salford UK.
  12. Madi, U.R. (1984), "Idealising the members behaviour in the analysis of pin-jointed spatial structures", 3rd Int. Conference on Space Structures, Surrey, UK, 462-467.
  13. McConnel, R.E. and EI-Sheikh, A.I. (1991), "Effect of composite action on space trusses", Int. Conference on Steel and Aluminium Structures, Singapore, 94-103.
  14. Parke, G.A.R. (1993), "A novel soft member for space trusses", 4th Int. Conference on Space Structures, Surrey, UK, 116-126.
  15. Schmidt, L.C., Morgan, P.R. and Clarkson, J.A. (1976), "Space trusses with brittle-type strut buckling", J. Struct. Div., ASCE, 102(7), 1479-1492.
  16. Schmidt, L.C. and Hanaor, A. (1979), "Force limiting devices in space trusses", J. Struct. Div., ASCE, 105(5), 939-951.
  17. Schmidt, L.C. and Morgan, P.R. (1981), "Behaviour of some joint designs in space trusses", Civil Engineering Trans., CE23(3), 172-177.
  18. Schmidt, L.C., Morgan, P.R. and Hanaor, A. (1982), "Ultimate load testing of space trusses", J. Struct. Div., ASCE, 108(6), 1324-1335.
  19. Schmidt, L.C. and Morgan, P.R. (1986), "Member ductility and design detail of some welded joints", Int. J. of Space Structures, 2, 139-145.
  20. Smith, E.A. (1984), "Space truss nonlinear analysis", J. Struct. Engng, ASCE, 110(4), 688-705. https://doi.org/10.1061/(ASCE)0733-9445(1984)110:4(688)
  21. Tada, M. and Wakiyama, K. (1993), "Load-carrying capacity of space trusses under the influence of imperfections", 4th Int. Conference on Space Structures, Surrey UK, 205-212.
  22. Vecchio, F.J. (1989), "Nonlinear finite analysis of reinforced concrete membranes", ACI Struct. J., 86(1), 26-35.

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