Buffeting Response of Bridgesby F. J. Wall, Univ of Innsbruck, Austria,
Abstract: The present study provides a theoretical analysis of the behavior of the response of long-span bridges to turbulent wind loads in the region of stable motion. The analysis is based on a linear structural model capable of one uncoupled torsional mode. Based on the assumption that the turbulent components of the wind flow may be represented by weakly stationary wideband random processes an amplitude/phase formulation is utilized. Employing a modified stochastic averaging procedure the probability density functions for the buffeting response quantities in the stationary state are obtained. Furthermore the expected rate of threshold crossings from below and the exceedance probabilities are evaluated.
Subject Headings: Wind loads | Bridge tests | Span bridges | Load factors | Linear analysis | Stationary processes
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