This paper describes the results obtained from the field measurements of wind effects on a 78-storey high-rise building. Di Wang Tower. The field data, which include wind speeds, wind directions and acceleration responses, presented in this paper were measured atop this building during the passage of Typhoon Sally in 1996. The damping in this tall building is evaluated by Random Decrement Technique (RDT) based on the full scale measurements of wind-induced responses. The amplitude dependent characteristics and randomness of damping are presented and discussed. The time series method is employed to model the random component of damping, and a stochastic form of Jeary's damping model is established.
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References
1.
BrockwellP.J.DavisR.A. (1991). “Time Series And Methods”, Springer-Verlag.
2.
ColeH.A. (1973), “On-line failure detection and damping measurement of aerospace structures by the random decrement signatures,” NASA, CR-2205.
3.
FangJ.Q.LiQ.S.JearyA.P.WangC.K., (1997), “Probabilistic Characteristics of Damping in Buildings (Based on the full scale measurements)”, Submitted to J. of Struc. Engin., ASCE.
4.
HartG.C.LewM.JulioR.D. (1973), “High-rise building, response: Damping and period non-linearities,”Proc. 5th World Conf. Earthquake, Eng., Rome.
5.
JearyA.P. (1986), “Damping in Tall Buildings — A Mechanics, And a Predictor”, Earthquake Engin. and Struct. Dyna., 14, 733–750.
6.
JearyA.P. (1992), “Establishing Non-Linear Damping Characteristics of Structures From Non-Stationary Response Time-Theories”, The Structural Engineer, 70(4), 61–66.
7.
JearyA.P. (1996). “The description and measurement of nonlinear damping in structures.”Journal of Wind Engineering & Industrial Aerodynamics, 59, 103–114.
8.
KareemA.GurleyK. (1996), “Damping in Structures: Its Evaluation And Treatment of Uncertainty”, J. of Wind Engin. & Indu. Areody., 59(2. 3) 131–157.
9.
LiQ.S.FangJ.Q.JearyA.P.WongC.K. (1997), “Full Scale Measurements of Wind Effects on Tall Buildings”, Accepted for publication in J. of Wind Engin. & Indu. Areody. — Special Issue of 2EACWE.
