Wind and Structures

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Probabilistic characteristics of damping in buildings

  • Fang, J.Q. (Department of Building and Construction, City University of Hong Kong) ;
  • Li, Q.S. (Department of Building and Construction, City University of Hong Kong) ;
  • Jeary, A.P. (Department of Building and Construction, City University of Hong Kong) ;
  • Liu, D.K. (Department of Building and Construction, City University of Hong Kong) ;
  • Wong, C.K. (Department of Building and Construction, City University of Hong Kong)
  • Published : 1999.06.25
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Abstract

This paper describes probabilistic characteristics of damping in a tall building based on the results of full-scale measurement. It is found, through statistical analysis of the damping data, that the probability density function(PDF) of damping at the high amplitude plateau can be well represented by Normal distribution (Gaussian distribution). A stochastic damping model is proposed to estimate amplitude-dependent damping for practical application.

Keywords

References

  1. Fang, J.Q., Li, Q.S., Jeary, A.P. and Wong, C.K. (1999), "Random damping in buildings and it AR model' , Journal of Wind Engineering and Industrial Aerodynamics, 79, 159-167. https://doi.org/10.1016/S0167-6105(97)00295-X
  2. Haviland, R., (1976), "A study of the unceertainties in the fundamental translational period and damping values for real building", Res. Rep. No.5, Pub. No.R76-12, Dept of Civil Engin., MIT, Cambridge, MA.
  3. Jeary, A.P., (1986). "Damping in tall buildings-a mechanism and a predictor", Earthquake Eng. & Struct. Dyn., 14, 733-750. https://doi.org/10.1002/eqe.4290140505
  4. Jeary, A.P. (1996), "Description and measurement of nonlinear damping in structures", Journal of Wind Eng. & Ind. Aerodyn, 59(2/3), 103-114. https://doi.org/10.1016/0167-6105(96)00002-5
  5. Li, Q.S., Fang, J.Q., Jeary, A.P. and Wong, C.K. (1998), "Full scale measurements of wind effects on tall buildings", Journal of Wind Eng. & Ind. Aerodyn., 74-76, 741-750. https://doi.org/10.1016/S0167-6105(98)00067-1
  6. Li, Q.S., Fang, J.Q., Jeary, A.P. and Wong, C.K. (1996), "Full scale measurements of wind effects on a tall building-Part I : probability distributions" , Research report of BC-SDRC/96/09. City university of Hong Kong.
  7. Tamura, Y and Suganuma, S. (1996), "Evaluation of amplitude-dependent damping and natural frequency of buildings during strong winds", Journal of Wind Eng. & Ind. Aerodyn, 59(2/3), 115- 130. https://doi.org/10.1016/0167-6105(96)00003-7

Cited by

  1. Probabilistic assessment of wind-sensitive structures with uncertain parameters vol.89, pp.10, 2001, https://doi.org/10.1016/S0167-6105(01)00076-9