Wind-Induced Response of Torsionally Coupled Buildings

by M. Saiful Islam, Cornell Univ, United States,
Bruce Ellingwood, Cornell Univ, United States,
Ross B. Corotis, Cornell Univ, United States,

Document Type: Proceeding Paper

Part of: Structural Safety and Reliability


This paper summarizes the results of a comprehensive three-dimensional dynamic analysis of tall buildings subjected to fluctuating wind forces. Random vibration theory is used to relate rms building accelerations to dynamic alongwind, acrosswind, and torsional forces. Wind tunnel pressure measurement data are analyzed to determine force spectra and correlations between the different force components. The effects on building response of statistical correlation between the force components and eccentricities in the centers of rigidity and/or mass from the geometric center are examined.

Subject Headings: Wind forces | Torsion | Coupling | Building design | Structural dynamics | Wind pressure | Correlation | Three-dimensional analysis

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