架空输电线路导线力学计算的新探索

In view of the fact that the concept of stress is the point,the bending resistance of overhead power lines can not be ignored.This paper considers the axial force,shear,bending moment and the fundamental assumption that flat wire is basically in the elastic range,however the previous scholars using flexible catenary method.In general case,the wire calculation model is established.And a simplified model is given after discard the dross and select the essential.Then this paper gives the conductor linear formula,internal force formula,calculation formula of sag and the calculation formula of the stress in the strand.The results show that the original sag is bigger and the stress is significantly smaller.Especially stress calculation formula is almost close to the reality and the truth that the linear include the results of the original flexible case proves the reliability of the simplified model.Otherwise the relationship of physical property that the results shows makes the research more scientific.These can not only improve the authenticity of wire alignment,the logic of internal force,the completeness of stress,but also fill in the blank of the research of the overhead conductors.And it will make the design of the overhead lines to show a new situation.