摘要
利用应变累加法,计算了钢芯铝绞线(LGJ或ACSR)的钢芯和铝线的总应变,得到其与应力和导线温度的关系.在考虑导线初伸长的基础上,利用迭代法计算了导线的弧垂.计算结果表明:对于型号为LGJ240/40的钢芯铝绞线,在档距为400m时,温度每升高10℃,弧垂增加约为0.45m.
Based on the strain - summation method, total steel and aluminium strains of Aluminium Conductors Steel Reinforced wire （LGJ or ACSR） are calculated, respectively, and the relationships among them with stress and conductor temperature are obtained. The conductor sag is calculated by means of an iteration method while the conductor primary elongation is considered. The calculation results show that, when the conductor temperature is increased every 10℃, the conductor sag increases about 0. 45m for conductor LGJ240/40 with 400m span.
出处
《哈尔滨理工大学学报》
CAS
2007年第3期95-98,102,共5页
Journal of Harbin University of Science and Technology
关键词
架空输电线路
应力-应变
孤垂
overhead transmission line
stress - strain
sag
