摘要
以220 kV酒杯塔为研究对象,利用有限元软件ANSYS建立了酒杯塔的梁桁模型,并对酒杯塔进行了动力学分析和抗震能力研究。结果表明:铁塔第一阶振型为横线路方向,第二阶振型为顺线路方向,第三阶振型出现了一定角度的扭转;K节点产生了一定的位移,有限的位移没有影响杆件的极限承载力。杆件最大应力并不在K节点处,应力值也并没有超过材料屈服极限。
Taking 220 kV glass tower as study object,220 kV glass tower beam mixed finite element model is established by numerical analysis software（ANSYS）.Dynamic analysis method and tower seismic analysis are used to study the glass tower.The results are as following：tower first vibration mode is a cross-line direction,a second vibration mode along the lines of direction,third-order modes have been reversed certain angles.K node generates a certain amount of displacement,limited displacement of the rod does not affect the ultimate bearing capacity.The maximum stress rods are not in K node,and stress value does not exceed the material allowable value.
出处
《陕西电力》
2016年第3期34-37,80,共5页
Shanxi Electric Power
基金
国家自然科学基金资助项目(51477090)
关键词
输电铁塔
三维建模
模态分析
振型
地震烈度
power transmission tower
three-dimensional modeling
modal analysis
modes
seismic intensity
