输电线路铁塔锈蚀塔腿补强措施及仿真计算

Reinforcement Measures and Simulation Calculation of Corrosion Tower Leg of Transmission Line Tower

输电线路铁塔塔腿锈蚀问题现已严重影响到输电线路安全稳定运行.为此,利用ANSYS有限元分析软件针对已锈蚀铁塔主材建立了桁架混合模型,对已锈蚀塔腿主材在最恶劣运行工况下的受力情况进行了计算,由计算结果提出了一种新型加固方案—分解加固法,并以加固补强后的铁塔为基础重新建立了仿真计算模型,对补强后铁塔的应力强度及整体稳定性进行了分析,验证了该种加固补强方案在力学性能方面的可行性;同时从施工周期、施工难易程度、以及经济性方面与传统的铁塔加固补强方案进行了对比,所提出的的新型补强方案均明显优于传统方案.

With the increasingly serious problem of the corrosion of the tower leg of the transmission line, now it has seriously affected the safe and stable operation of the transmission line.To this end,the finite element analysis software ANSYS is used to establish a mixed truss model for the corroded iron tower main material;and then the stress of the corroded tower main material under the worst operating conditions is calculated.A new reinforcement scheme,i.e.the decomposition reinforcement method,is proposed based on the calculation results;and the simulation calculation model is re-established on the basis of the reinforced tower.The stress intensity and overall stability of the strengthened iron tower are analyzed;and the feasibility of the reinforcement and reinforcement scheme in mechanical properties is verified.Meanwhile,compared with the traditional iron tower reinforcement and reinforcement scheme from the construction period, construction difficulty and economy,the proposed new reinforcement scheme is obviously superior to the traditional scheme.