腐蚀对架空输电线路铁塔承载力特性影响  

Influence of corrosion on bearing capacity characteristics of overhead transmission line tower

作　　者：黄耀 苏志钢 朱彬荣 陈云翔 万涛 庹祖雄 HUANG Yao;SU Zhigang;ZHU Binrong;CHEN Yunxiang;WAN Tao;TUO Zuxiong(China Electric Power Research Institute,Beijing 100192,China;Electric Power Research Institute of State Grid Fujian Electric Power Company Limited,Fuzhou 350007,China;State Grid Hubei Electric Power Enshi Power Supply Company,Enshi 445000,Hubei,China)

机构地区：[1]中国电力科学研究院有限公司,北京100192 [2]国网福建省电力有限公司电力科学研究院,福州350007 [3]国家电网湖北省电力恩施市供电公司,湖北恩施445000

出　　处：《有色金属科学与工程》2024年第5期723-731,共9页Nonferrous Metals Science and Engineering

基　　金：国网公司科技项目(5200-202058470A-0-0-00)。

摘　　要：为有效评估腐蚀对长期服役杆塔承载力特性造成的影响,采用扫描电镜、拉伸试验、轴压承载力试验和模拟仿真的方法,研究了不同腐蚀程度对杆塔构件腐蚀率、屈服强度、抗拉强度、断后延伸率、弹性模量和杆塔构件承载力的影响。结果表明:随着腐蚀程度的增加,杆塔构件屈服强度、抗拉强度、断后延伸率会呈非线性降低,而弹性模量基本不受腐蚀的影响;截面损失率越大,构件承载力越低,中间位置的腐蚀对构件的影响大于边部位置。To effectively evaluate the impact of corrosion on the bearing capacity characteristics of long-term service towers,scanning electron microscopy,tensile testing,axial compression bearing capacity testing,and simulation methods were used to study the effects of different degrees of corrosion on the corrosion rate,yield strength,tensile strength,elongation after fracture,elastic modulus,and bearing capacity of tower components.The research results indicate that the yield strength,tensile strength,and elongation after fracture of tower components will decrease nonlinearly with the increasing corrosion degree,while the elastic modulus is basically not affected by corrosion.The greater the cross-sectional loss rate,the lower the bearing capacity of the component.The effect of corrosion at the middle position is greater than that at the edge position.

关 键 词：腐蚀程度 架空输电线路 承载力计算 腐蚀率 稳定系数 

分 类 号：TF044[冶金工程—冶金物理化学]