Discussion on “Time domain buffeting response calculations of slender structures” by K. Aas-Jakobsen, E. Strommen

The authors (J. Wind Eng. Ind. Aerodynam. 89 (2001) 341) presented a time domain framework for predicting the buffeting response of slender structures utilizing aerodynamic forces based on the quasi-steady theory. The example studied clearly demonstrated the significant influence of structural nonlinearities on the buffeting response, and reaffirmed the overall versatility of the time domain analysis approach. In the light of the time domain presentation in this paper, we would like to offer some comments which we believe would expand the scope of the time domain approach as applied to bridge buffeting response. Our discussion focuses on three key aspects: the simulation of the random wind field, the quasi-steady aerodynamic force model and the element discretization as presented in this paper.