摘要
本文分析了风电场架空输电线路的特点以及季节性冻土对线路基础的危害,并结合风电场中35 kV直流输电线路杆塔基础的稳定进行分析。计算结果表明,在季节性冻土地区,特别是对冻深较大的地区,在基础埋深达到要求的同时,切向冻胀力也会对基础的稳定造成不利影响。因此,对季节性冻土地区的输电线路基础工程除按一般地区的要求进行设计施工外,还要考虑冻土的特殊要求。
The paper analyzes the characteristics of overhead transmission line for wind power plant and influence of seasonal frozen soil on the line foundation.Combined with the 35kV HVDC transmission line tower of wind power plant,the stability of line foundation is analyzed.The result shows that the tangential frost heaving force has bad influence on stability of foundation as the depth of foundation meets qualification in seasonal frozen area,especial in area with the larger frost depth.So the design and construction of transmission line foundation in seasonal frozen area not only meet the qualification of general area,but also consider the special condition of frozen soil.
出处
《东北水利水电》
2011年第3期67-68,72,共2页
Water Resources & Hydropower of Northeast China
关键词
季节性冻土
风电场
冻胀力
输电线路
台阶式基础
seasonal frozen soil
wind farm
frost heaving force
transmission line
stepped foundation
