Probabilistic description of tall building response to wind: Database-assisted design, dynamics, and wind directionality effects

Abstract eng:
The lack of standards on the estimation of tall building response to wind has led to a situation where estimates for the same building by two or more consultants can differ by more than 40 %. We propose an improved procedure for estimating response of buildings in a clear and transparent manner allowing structural engineers to thoroughly scrutinize the estimates or perform them on their own, once the aerodynamic and climatological information is supplied by the wind engineering consultants. The procedure is made possible by the measurement and electronic recording of simultaneous pressure time histories at numerous ports on the surface of the wind tunnel model. It uses influence coefficients obtained by standard structural analysis programs, and standard structural dynamics approaches. Multidirectional extreme wind speed time series are transformed into one-dimensional time series of extreme wind effects, allowing the simple and rigorous estimation of wind effects for any specified mean recurrence interval.

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