基于ansys的半刚性连接特高压输电塔结构非线性分析_

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1、重庆大学硕士学位论文转动刚度对极限承载力影响的分析，为实际设计提供了工程参考。通过限制各参数的范围，可以使特高压输电塔各杆件充分发挥承载性能而在塔腿位置发生最终破坏，从而利用空间塔腿极限承载力公式进行校核。5）分析比较了半刚性节点在不同的转动刚度下，对特高压输电塔动力特性的影响。关键词：特高压输电塔，半刚性节点，非线性，ANSYSII英文摘要ABSTRACTDuetotheadvantagesoftransmissioncapacityandhightransmissionefficiency，theUHVtra

2、nsmissionlineisbeingincreasinglywidelyusedanditssecuritycannotbeignored.ItisveryimportanttoselectacorrectcalculationmodelintheUHVtransmissiontowerstructurenonlinearstressanalysis.Intraditionaldesign,analysisoftowerissimplifiedtohinge-joint.Infact,thenodeconne

3、ctionoftheUHVtransmissiontowerisakindofsemi-rigidjointbetweenpinnedandrigidconnection.GenerallyanalysismethodisnotaccordedwiththeactualmechanicalcharacteristicsoftheUHVtransmissiontowerstructure.Semi-rigidconnectionsteelframeathomeandabroadhavebeencarriedonth

4、oroughlyandmadegratifyingachievements,buttheUHVtransmissiontowerisdifferentfromthatofthesteelframespecialspacelatticestructure.Thestructureform,thenodestructure,materialselectionandmechanicalcharacteristicsaredifferentsothatthosemethodsarenotsuitable.Itneedss

5、pecialresearch.Therefore,thisarticlehascarriedontheresearchconcerningthenonlinearstressanalysisonsemi-rigidjointedUHVtransmissiontowerstructure,andexaminesthesemi-rigidnodesfortheinfluencedegreeofthemechanicalperformanceunderdifferentparametersofengineeringde

6、sign,thenprovidenecessaryguidanceforpracticalengineeringdesign.ThispaperestablishedatypicalUHVtransmissiontowerangle-plateK-nodefiniteelemententitymodel,andcalculatedthemoment-rotationcurve.Aftercheckingwiththetestresult,thisnodemodelwastakenintothesemi-rigid

7、UHVtransmissiontowerplanemodel,thespacetower-legmodelandwholetowermodelfornonlinearstressanalysis.ThoughcomputingandanalysistheUHVtransmissiontower-leg、thewholetowerstructurewhichhasalargenumberofdegreesoffreedom,thisarticlestudiedthesemi-rigidnode’srotationa

8、lstiffness(bendingstiffnessandtorsionalstiffness)influencewiththeperformanceofUHVtransmissiontowerstructuresystematically,andanalysisedtheregularityabouttransmissiontowerwithdifferentheig