摘要
利用ANSYS有限元法构建了新塔型500 kV紧凑型窄基输电塔梁桁混合模型,并研究了动力特性,采用分块Lanczos法分析了500 kV紧凑型窄基输电塔的模态,获得了前20阶自振模态及相应的自振周期,与普遍采用的经验公式计算结果比较,初步得出电力部门经验公式在紧凑型窄基输电塔实际工程设计中仍有效。
The paper establishes the beam truss mixed model of the new tower-type（500 kV compact and narrow basal transmission tower） by using ANSYS finite element method and studies its dynamic properties.Block Lanczos method is applied to analyze the modes of 500 kV compact and narrow basal transmission tower and its first 20 order modes and natural vibration period are obtained.Comparison of the result with experience formula,it is obtained that power industry experience formula is still valid in actual engineering design of 500 kV compact and narrow basal transmission tower.
出处
《水电能源科学》
北大核心
2011年第2期167-168,186,共3页
Water Resources and Power
关键词
500kV紧凑型窄基铁塔
有限元模型
自振周期
模态分析
动力特性
500 kV compact narrow basal transmission tower
finite element model
natural vibration period
modal analysis
dynamic property
