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Mitigation of Wind-Induced Vibration of Tall 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 Design, Analysis and Testing

Abstract:

This paper summarizes a detailed study of the sensitivity of building acceleration to changes in structural stiffness, mass and damping and to the eccentricities in the centers of stiffness and mass. A general formulation for analyzing three-dimensional dynamic response to tall buildings subjected to fluctuating wind forces is used to identify the parameters that most affect structural motions. Cases where the presence of statistical correlation between aerodynamic forces and/or offsets in centers of mass and stiffness most affect the response are identified. A simple approach is proposed for making a preliminary design assessment of the need for measures against excessive structural motions.

Subject Headings: Dynamic structural analysis | Vibration | High-rise buildings | Building design | Wind forces | Three-dimensional analysis | Dynamic response

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