Reliability analysis of wind resistance of transmission tower-line system based on probability density evolution
In this study,the three-line and two-tower straight section transmission tower-line system is taken as the engineering object of study,and the finite element simulation is applied to establish the wind resistance reliability analysis method of the transmission tower-line system based on probability density evolution.Firstly,the DR-SRM is used to simulate the fluctuating wind field of structures,and a representative sample set of wind load is generated.Then,combined with PDEM theory,the stochastic dynamic response of the transmission tower line system considering aeroelastic effect is analyzed.Finally,the equivalent extreme value idea is applied to construct the failure criteria of the transmission tower line system under wind load,and then the wind resistance reliability of the transmission tower line system is analyzed in detail.In this paper,by combining DR-SRM and PDEM theory,the wind resistance reliability of structures can be precisely analyzed with only a small number of representative samples,which provides a reference for engineering practice.
tower-line systemfluctuating wind fielddimension reduction spectral representation methodreliabilityprobability density evolution
万方数据
维普
