Building Dynamics Due to Stochastic Wind Forces

by Gary C. Hart, (A.M.ASCE), Asst. Prof. of Engrg.; Univ. of California at Los Angeles, Los Angeles, CA,

Serial Information: Journal of the Structural Division, 1970, Vol. 96, Issue 3, Pg. 535-550

Document Type: Journal Paper


A procedure is presented for the dynamic analysis of three-dimensional multistory buildings subjected to multiple stochastic wind forces. Multivariate normal probability density functions are defined for normal mode displacements, rigid body floor displacements, and member end-displacements and forces. The wind force quadrature-spectral density is magnified several times more than its co-factor spectral density by the receptance coefficients. The integral constants are proportional to the area under the receptance coefficient curves. The calculated value of the wind force cross-spectral density function must be as accurate as posible between the building's natural frequencies of vibration.

Subject Headings: Wind forces | Three-dimensional analysis | Stochastic processes | Displacement (mechanics) | Power spectral density | Structural dynamics | Dynamic analysis | Dynamic structural analysis

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