Le Thai Hoa, Nguyen Dong Anh

Random turbulent loading on engineering structures which immersed in the
atmospheric turbulent flow is often represented as the multi-dimensional and/or multivariate
Gaussian random loading processes. Gust response prediction, however, usually
burdens a lot of computational difficulties due to turbulent loading projection on the
generalized structural coordinates. In these cases, the decomposition techniques must
be required to decouple the multi-variate turbulent loading into the independently generalized
turbulent forces, then is associated with the generalized structural modes. This
paper will present the proper orthogonal decomposition using the spectral proper transformation
in the frequency domain to decouple the multi-variate turbulent loading processes.
New approach in the gust response prediction of structures will be formulated
with numerical example of cable-stayed bridge.