大跨越輸電塔線體系風振控制.pdf

1、同濟大學碩士學位論文大跨越輸電塔線體系風振控制姓名：蘇速申請學位級別：碩士專業(yè)：結構工程指導教師：王肇民鄧洪洲2003.1.1同濟大學申請博士學位論文ABSTRACTTransmissiontowerisakindofhigh—risesmJcc【I∞ofimportanceanderectedeverywhereIfthetransmissionsystemisdestroyeditwillhurtpowersystemanda如ct

2、people’slifeAsaresult，itmaybedrawsfiredisasterandbringsgreatlosstothepovertyInthispaperbasedontheJiangyin500kVtransmissionsystemontheChang]iangRiverthehi曲estandwithlongestspansysteminChina，thedynamicresponseofthetransmis

3、sionsystemsabjectedwindloadingisdiscussedWiththeerectionofthecontrollersystem，thewindinducedresponseisreducedandthesecurityandreliabilityareimprovedThispaperincluding：AwindtunnelexperimentmodelanditsTMDsystemaredesignedi

4、nthispaperThebasiccharacteristicsandexpressionofwindloadareinvestigatedinthispaperAndbasingonthetheoryofstochasticprocess，multidimensionalpulsationwindloadissimulatedToaccordantwiththelongspantransmissiontowersystem，atru

5、sscablemodeloflongspantransmissiontowersystemiserectedbasingonthefiniteelementtheoryAsaresult，thiskindofmodelaccordswiththefactandthecouplingeffectcanbeincludedInaddition，basedoniterativemethod，aprogramiscompiledtocalcul

6、atethedynamiccharacterofthetransmissionsystemItisnecessarytoanalyzethelifelineprojectbyusingthetimehistorymethodinordertoobtainalltheresponsedungthedynamicprocessSothelongspantransmissionssystemmodel’sresponseisinvestiga

7、tedintimefieldundersimulatedwindloadsToinvestigatehowtoreducetransmissionssystem’sresponseunderwindloadsisalsoamaimaimofthispaperwhichincludesoptimizingtheparameteroftheTMD，discussingthecontrollingtheoryinfrequencyandtim

8、ehistoryfieldAseriesofTMD(TunedMassDampers)areerectedonthetowertoreducethedynamicresponseofthetowerTheparametersoftheTMD(TunedMassDamper)areoptimizedandthee仃ectsaftercontrollingintimehistoryfieldarediscussedTheresultshow

9、stheefficiencyofthecontrollingsystemandprovidesthetheorytotheexperimentandtheerectinginthefutureTheeffbctofthecontrolofwindinducedvibrationistestedthroughwindtunnelexperimentandcontrollingproposalsbasingontheexperimental