为了解决输电线路改造施工时影响被跨越物正常运行的难题,在组立铁塔过程中,采用了内悬浮提升抱杆,逐步抬高中相导线,保持导线不落地施工方法,对330 kV大-固线路跨越福-银高速公路段进行改造。应用结果表明：利用2根铝合金薄壁抱杆不落线对ZM铁塔加高的施工方法,操作简单,安全可靠,大大地节约了施工费用,可在类似改造工程中推广使用。%In order to avoid the influence of the rebuilding of power transmission line on normal op- eration of spanning objects, in the process of constructing power transmission tower, adopts a construc- tion method of using the internal suspension assistant setting appliance, gradually raising middle phase power line, keeping the line without falling, rebuilds the crossover section of 330 kV power transmission line from Daba to Guyuan spanning the thruway from Fuzhou to Yinchuan. The applica- tion result shows that the construction method of using two aluminium alloy thin assistant setting appli- ances without falling power line replacing ZM tower have： the characteristics of operation simple, safety and trustiness, greatly saving the cost, which can spread widely in similar project.
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