Analysis On The Bearing Capacity Of Iced High Voltage Transmission Tower And Structural Optimization

Along with the development of the society, people increasingly urgent demand for electricity, which directly affected People’s Daily life, also can bring huge economic and social benefits to the society, the high voltage transmission tower as the main part of transmission system, its security affects the safety of the power system, because of its towering structure, the characteristics of the larger aspect ratio, affected by external load is larger, the high-voltage transmission tower, transmission lines ice cover problem has became the major problem of academia and engineering to solve, all around the world every year because of ice and snow disasters caused widespread transmission tower break accident, directly lead to large area power blackout accident, serious impact on people’s life, also brought huge economic losses to the society. In2008continues the low temperature freezing weather in south China, a major of ice and snow disaster, many provinces of high voltage transmission tower caused by transmission lines ice cover thickness is too big, broken rod69.1hwange of transmission towers, lead to large area power system, transmission system paralysis, causing incalculable economic losses.On the basis of genesis, classification and summary of ice damage to transmission lines,analyse the cause of the damage and destruction forms of transmission towers, and through the adoption of the engineering actual data of of a500kv line ZB1glass type linear tower in Wang Xianling Chenzhou Hunan province,based on space truss theory,establish finite element model in the finite element analysis software ANSYS, select beam element to simulate the transmission tower bars, and calculate the bearing capacity of the transmission tower in its weight, ice load, wind load and the tension of conduct and grounding line. Under different conditions determine the relatively weak position, and go into the optimization design. The main weak links are in the neck of the tower and the body of the tower. Comparing bearing capacity of tower After and before optimization design under the working condition of the corresponding combinations and conclude conclusions. The bearing capacity of the tower is greatly improved after optimization...