粘彈性阻尼器在控制輸電鐵塔振動中的應(yīng)用.pdf

1、華中科技大學(xué)碩士學(xué)位論文粘彈性阻尼器在控制輸電鐵塔振動中的應(yīng)用姓名：鐘寅亥申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：李黎2003.5.8華中科技大學(xué)碩士學(xué)位論文ABSTRACTThispapercomefrompIacticalprojectThelongspantransmissiontowerislocatedinHanJiangshore，whichisnamedwr觚gJiaTanItsheightis122mBecauseit

2、isaerialstructure，towerwillvibrateveryintenselyunderwindinduceThereismuchmoretowerin0111“countrySomearehigherThereforeitisvaluabletoconlxolvibrationoftransmissiontOWerBasedontheresearchofvibrationcontrolmeanings，viscoela

3、sticdampe“isselectedtocontrolvibiationoftransmissiontowerViscoelastic(VE)dampersareeffectivepassivecontroldeviceswitllthecharactersofsimpleconstructionandlowcostInChinathestudiesonVEdampersaremainlyinaviation，aerospacean

4、dwRrindustryonlyafewintheaspectofcivilconstructionvibrationcontr01Therefore，itisnecessarytoresearchonVEdampersappliedtolowfrequencyandhighswingcivilconstructionliketransmissiontowerBecausevibrationoftransmissiontowerisin

5、ducedbywind，achievementsaboutresearchofwindissummarizedThecharacterofwindisanalysedBycontrastwithsevevalpowerspectraKaimalspectrumischoosedtosimulatewindloadInthispaperalgorithmofviscoelaticdamperparameterisinvestigatedI

6、setupdynamicresponseequationPowerspectrumofwindappliedtodynamicequationisderivatedEquivalentdampingratioisestimatedbymodelstrainenergymethodAfterwards，IcalculatedisplacamenLshearingforce，axisforce，momentoftorsionHavingca

7、lculateddynamicresponseofirontoweronthetwodifferentconditiontheconclusionisdrawedthatitiseffectivetoinstallviscoelasticdampersontransmissiontowerFinallyIbringforwardsomequestionsthathavenotbeensolved，andmadeimaginarysolu