On the Application of Stochastic Decomposition in the Analysis of Wind Effects

This paper presents the formulation and application of stochastic decomposition of covariance and crosspower spectral density matrices in the analysis of wind load effects on structures. This technique not only enhances our understanding of the underlying physics of wind loads and their effects on structures, but also provides efficient means to estimate structural response under multi-correlated excitations. Detailed discussion on the truncation of higher wind loading modes in the modeling and simulation of random wind load processes and associated analysis of wind effects are discussed using an example high-rise building.