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以某220kV跨越输电塔为例,通过对跨越塔塔头布置形式的比较,主材一次变坡最优坡度的分析和二次变坡位置的优化,研究了不同外观设计对跨越塔塔重、基础作用力、根开等设计指标的影响。针对不同跨越塔塔型,计算了杆塔的振动频率,并基于随机振动理论计算了跨越塔的风振系数,发现不同塔型的风振系数加权值变化不大。
Taking a 220kV transmission tower as an example, through the comparison of the crosshead tower head layout, the analysis of the optimal gradient of the primary timbering slope and the optimization of the position of the second slope change, The basis of force, such as the design of open root of the impact. For different span tower types, the vibration frequency of the tower is calculated. Based on the random vibration theory, the wind-induced vibration coefficient of the tower across the tower is calculated. It is found that the wind-induced vibration coefficient of different tower types has little change.