Wind and Structures

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Wind-induced fatigue design of a cruciform shaped mast

  • Mendis, P.A. (Department of Civil and Environmental Engineering, The University of Melbourne) ;
  • Dean, B. (Connell Wagner Ltd.)
  • Published : 2000.03.25
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Abstract

The cruciform shaped mast over 47 storey, Telecom Corporate Building in Melbourne, Australia rises to a height of approximately 25 m above the roof level. As the members are subjected to very high fluctuating loads under wind, the design was mainly governed by wind-induced fatigue. A detailed fatigue analysis was carried out according to the requirements of the Australian Steel Structures Code, AS4100. The wind-induced fatigue analysis procedure is described in the paper. The fatigue design of this mast is used as an example to illustrate some potential problems of relevant specifications in AS4100 and to outline some of the more important parameters in the fatigue analysis.

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References

  1. European Convention for Constructional Steelwork. (1985), "Recommendations for the fatigue design of structures", ECCS-TC-6.
  2. Kwok, K.C.S. and Melbourne, W.H. (1981), "Wind-induced lock-in excitation of tall structures", Journal of the Structural Division, ASCE, 107(1), 57-72.
  3. Melbourne, W.H., "Wind data for Melbourne", private communication, 1990.
  4. Saunders, J.W. and Melbourne, W.H. (1975), "Tall rectangular building response to cross-wind excitation", Proceedings of the 4th International Conference on Wind Effects on Buildings & Structures, University Press, 369-379.
  5. Standards Association of Australia, "Steel structures", AS 4100, 1990.
  6. Standards Association of Australia, "SAA loading code Part II: wind loads", AS 1170.2, 1989.