摘要
输电铁塔的局部螺栓连接结构在服役过程中,受到环境静/动载荷的作用,会发生预紧力减小或松动等故障,降低整体输电铁塔结构的承载能力。因此发展输电铁塔螺栓连接结构健康监测技术对电网输电塔线体系的安全可靠运行具有重要意义。对螺栓连接结构的典型结构健康监测技术研究进展进行综述,包括基于动力学理论、导波理论、声弹性效应和计算机视觉技术的结构健康监测技术,介绍这些技术的基本原理和发展现状,并在此基础上对输电铁塔螺栓连接结构健康监测技术进行总结和展望。
The bolted joints of transmission towers in service are subjected to the environmental random static/dynamic loading,frequently leading to the reduction or loosening of pre-tightening stress, and as a result reducing the total bearing capacities of transmission towers. Therefore, it is of great significance for the safety and reliability of the transmission towers to develop the structure health monitoring(SHM) technology. We make a review on the research progress of several typical SHM technologies for bolted joints, including technologies based on the dynamics theory, guided wave theory, acoustoelasticity effect and computer vision technology. Their basic principles and development status are introduced and discussed. Finally the DHM technologies for the transmission tower bolted joints are summarized and prospected.
作者
张武能
汪毅
张留斌
吴克华
王晓晨
ZHANG Wuneng;WANG Yi;ZHANG Liubin;WU Kehua;WANG Xiaochen(Henan Jiuyu Enpai Power Technology Co.,Ltd.,Zhengzhou 450000,China;Electric Power Research Institute,State Grid Henan Electric Power Co.,Ltd.,Zhengzhou 450000,China)
出处
《中国电力》
CSCD
北大核心
2021年第2期18-26,共9页
Electric Power
基金
国家自然科学基金资助项目(高超音速气流中受热壁板的屈曲/振动模态演变及分岔研究,No.12002280)。
关键词
输电铁塔
螺栓连接结构
结构健康监测
松动状态
声弹性效应
计算机视觉
transmission tower
bolted joints
structure health monitoring
loosening status
acoustoelasticity effect
computer vision
