摘要
利用钢筋混凝土作为杆塔的接地装置是降低杆塔接地电阻的一个有效方法。实验研究了混凝土的吸水性能、钢筋混凝土接地装置的导电性能及通流能力。含水量较多的土壤中的混凝土电阻率为２５～４５Ωｍ。接地装置发生腐蚀的主要原因是在直流电压作用下的电化学腐蚀。同时试验得出了钢筋混凝土接地装置中的混凝土在降低接地装置的工频接地电阻时的等值系数为０．
? It is a valid method adopting reinforced steel in concrete as ground system of transmission line tower. The paper studied the water absorpting property of concrete and the conductive property and current withstand ability of grounding system adopting reinforced steel in concrete, and discussed its corrosion mechanism. The equivalent coefficient of concrete in decreasing power frequency ground resistance was drawn by experimental method.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1997年第6期108-110,共3页
Journal of Tsinghua University(Science and Technology)
关键词
钢筋混凝土
接地装置
导电性能
杆塔
输电线路
reinforced steel in concrete
ground system
water absorpting property
current withstand ability
corrosion
equivalent coefficient
