1000KV特高压输电钢管塔疲劳寿命时域分析  

Time Domain Analysis of Fatigue Life on 1000KV Extra-high Voltage Steel tube Tower

作　　者：邓培文 

机构地区：[1]华北电力大学继续教育学院,新疆830000

出　　处：《工业技术创新》2016年第3期435-438,共4页Industrial Technology Innovation

摘　　要：依照国内某些地区风荷载的分布规律,在输电塔塔线空间有限元模型的前提下,获取各个方向及风速的累积时长,并且模拟出了风压脉动时程曲线。据此,本文研究了特高压输电钢管塔在风荷载作用下的表现;借助雨流计数法,可以获知各杠件和连接应力的循环频率及应力幅;参照miner线性累积损伤原则,计算出重要节点的疲劳寿命,从而来估算出输电塔的疲劳寿命。本文为电力系统安全运营提供支持作用。According to the distribution of wind load in some parts of the country,under the premise of the space finite element model of transmission tower line,the cumulative time of each direction and wind speed is obtained,and the time history curve of wind pressure fluctuation is simulated.Accordingly.In this paper,we study the UHV transmission steel tubular tower under wind load performance;by means of rain flow counting method can be informed of the bar and should be connected to the force in the cyclic frequency and stress amplitude;reference Miner linear cumulative damage theory to calculate the fatigue life of the important nodes,in order to estimate the fatigue life of transmission tower.This paper provides support for the safety operation of power system.

关 键 词：特高压 输电钢管塔 时域分析 疲劳寿命 

分 类 号：TM7[电气工程—电力系统及自动化]