摘要
以500kV典型设计中的5B-ZB1直线酒杯塔为原型,采用空间桁梁混合结构来分析输电塔和索结构,并基于有限元方法分析导地线,构建了输电塔及塔线体系模型,通过逐级增加覆冰厚度的方法进行静力计算,分析了输电塔和塔线体系在覆冰荷载、风荷载、自重荷载及导线张力共同作用下的力学性能,对比分析了计算结果。结果表明,在覆冰荷载作用下杆塔的主要破坏是达到钢材的屈服强度而发生失稳破坏,输电单塔比塔线体系更偏于安全,而塔线体系更符合实际情况。
Taking 500 kV typical design of 5B-ZB1 linear glass tower as the prototype,space truss girders mixed structure is used to analyze transmission tower and cable structure.Based on analysis of ground wire with finite element method,transmission tower and tower line system model is established.Static stress is calculated by multistage increasing the thickness of icing.The mechanical properties of transmission tower and tower line system are analyzed under the combined action of icing load,wind load,dead weight load and tension wires.Comparative analysis of the calculation results,it shows that under the action of icing load,the major damage of poles and towers is caused by steel yield strength;transmission tower is more safety than tower line system;while tower line system is more consistent with the actual situation.
出处
《水电能源科学》
北大核心
2012年第6期166-168,131,共4页
Water Resources and Power
基金
吉林省自然科学基金资助项目(20101554)
关键词
输电塔
塔线体系
ANSYS
覆冰
力学性能
power transmission tower
transmission tower lines system
ANSYS
icing
mechanical property
