Investigation into wind resistance performance of cable-stiffened spherical latticed shells

Abstract

This paper investigated the wind-induced response and structural dynamic performance of cable-stiffened spherical latticed shell (SLS) structures under wind loads. Using a linear filtering method, the fluctuating wind speeds and wind loads applicable to SLS were simulated. The accuracy of the obtained fluctuating wind speeds was verified by comparing them with Davenport and Panofsky spectra. Furthermore, a finite element modeling method for SLS under wind loads was proposed, and the results from the numerical simulation were compared with existing wind tunnel test results, confirming the accuracy and reliability of the proposed numerical simulation method. Two different SLS models with distinct cable arrangement methods were established, and their natural vibration and wind-induced responses were analysed and compared through numerical simulations. The comparison results indicated that the out-of-plane cable arrangement method provided better wind resistance performance for cable-stiffened SLS structures than the in-plane cable arrangement. To further explore the wind resistance performance of cable-stiffened SLS structures, a parameter analysis was conducted, including parameters such as rise-to-span ratio, member cross-sections, cable sectional areas, and initial prestress. The results of the parameter analysis provided valuable guidance and recommendations for the application of cable-stiffened SLS structures in practical engineering.