Wind-sensitivity of single-layer latticed cylindrical shells

Based on the conception of wind-sensitivity, some key issues of wind-sensitivity theory were discussed in this thesis, and the calculation algorithm of wind-sensitivity was improved. The coefficient of background response effect, coefficient of coupling effect for background and resonance response and calculation formula of strain energy were defined and deduced theoretically. The influence of span, cross-sectional area, rise-span ratio and boundary conditions on the wind-sensitivity of cylindrical shells was studied systematically. Then, the classification system for the wind sensitivity of cylindrical shells was established. The study indicates that, the wind-sensitivity of cylindrical shells is mainly affected by the stiffness and vibration mode, which are expressed by structural basic frequency, rise-span ratio and boundary conditions. When the structural basic frequency is smaller than 1.5 Hz, the resonant response can't be omitted. When the structural basic frequency is larger than 1.5 Hz, the wind-induced responses can be calculated by simplified algorithm that merely considers the background response.