【摘要】 为了量化输电线微风振动的强度,评估影响因素的敏感性。根据平均风速概率分布函数和风向玫瑰图,基于Miner线性损伤累积理论,推导了可以考虑风向频率和平均风速分布的输电线微风振动疲劳寿命公式。利用该公式结合算例分析了输电线张力、地形地貌条件、悬挂点高度、防振锤安装方式和输电线走向等因素对其疲劳寿命的影响。输电线张力和所处的地貌条件对其疲劳寿命影响显著;优化的防振器安装方式与位置能够大幅度提高输电线路的寿命。更多还原

【Abstract】 To evaluate the intensity of transmission line aeolian vibration,and investigate the sensitivity of vibration influencing factors.Based on the average wind velocity probability distribution function and breeze rose diagram,the equation of transmission line fatigue life can be deducted by Miner linear accumulated damage theorem.Occurrence probability of wind direction and average wind velocity can be taken into account by present equation.Take single transmission line as an example,a series of infection factors such as tension of line,terrain,height of conductor,installation position of dampers and orientation of transmission line have been researched by present method.The results showed that the tension of line and the terrain have remarkable effects on fatigue life;installation position of dampers which are optimized could increase the fatigue life of transmission line observably.更多还原