Research on Wind-Induced Reliability of Double Column Suspended Guyed Tower in Strong Wind Area

The ultra-high voltage transmission line is long, which needs to pass through the various complex terrains. In order to ensure the safe structural system, understanding and grasping the wind-induced response and reliability of double column suspended guyed tower (DCSGT) in strong wind area of Gobi Desert are basic requirements. Through combining the conditional probability density of wind speed and frequency function of wind direction, the successive-type joint distribution model of wind speed and direction is obtained by multiplication theorem. In accordance with the principle of equivalent extreme value event, through utilizing the statistical moment point estimation method, the first four-order statistical moment information of equivalent extreme value variables is solved. The probability density function (PDF) of DCSGT response is calculated in accordance with these statistical moments. The dynamic reliability index and failure probability of DCSGT are solved by the moment method.