IndustrialConstructionVol.53，No.2，2023工业建筑2023年第53卷第2期109220kV猫头型输电塔在覆冰与断线耦合作用下的响应研究＊盛金马1严波2常江1齐益3龚桢佳3赵宝成3(1．国网安徽省电力有限公司经济技术研究院，合肥230061;2．国网安徽省电力有限公司，合肥230061;3．苏州科技大学土木工程学院，江苏苏州215011)摘要:利用弧长法有限元分析了猫头型输电塔在覆冰与断线耦合作用下的响应，研究了杆塔受弯、受扭及受弯扭的承载力变化规律、内力分布与变化规律、应力分布规律及斜材面外变形分布与变化规律，分析了不同塔型的破坏特征及覆冰厚度对杆塔承载力的影响。研究结果表明:杆塔在覆冰与断线耦合作用下，受弯使得受压侧主材及刚度突变处杆件屈服;受扭时塔头与塔身顶层横隔受力较大，使得其下方斜材屈曲;受弯扭导致塔底受压侧主材屈服及塔身斜材屈曲;杆塔覆冰后自重的增加会加剧其受压侧主材屈服及斜材屈曲，降低杆塔在断线荷载下的抗侧能力，在设计中应考虑覆冰与断线耦合作用对杆塔性能的影响。关键词:猫头型杆塔;覆冰荷载;断线荷载DOI:10.13204/j．gyjzG20110507ＲesponseＲesearchof220kVCathead-TypeTransmissionTowersUndertheCouplingLoadingofIcingandBrokenWireSHENGJinma1YANBo2CHANGJiang1QIYi3GONGZhenjia3ZHAOBaocheng3(1．EconomicandTechnologicalＲesearchInstitute，StateGridAnhuiElectricPowerCo．，Ltd．，Hefei230061，China;2．StateGridAnhuiElectricPowerCo．，Ltd．，Hefei230061，China;3．SchoolofCivilEngineering，SuzhouUniversityofScienceandTechnology，Suzhou215011，China)Abstract:Theresponseofcathead-typetransmissiontowersunderthecouplingloadingoficeandbrokenwirewerestudiedbyusingarclengthmethod．Thecorrelativedevelopmentofbearingcapacity，thedevelopmentanddistributionofinnerforces，thestressandout-of-planedeformationofbraceswereanalyzed．Theeffectoficethicknessonthebearingcapacitiesandfailuremodesofvarioustypesofcathead-typetransmissiontowerswereinvestigated．Theresultsindicatedthatwhenthetransmissiontowerswereunderthecouplingloadofbrokenwireandicing，theyieldingofthecolumnonthecompressionsideandthemembersatstiffnessmutationpartwereinducedbythebendingoftowers;Theinternalforcebetweenthetowerheadandtopdiaphragmwasrelativelylargewhenthetowerbodyw...
