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ID:10338736
大小:1.60 MB
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时间:2018-07-06
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1、!50"!7#!"#$$%(!"#)Vol.50No.72016$7%JournalofZhejiangUniversity(EngineeringScience)Jul.2016DOI:10.3785/j.issn.1008973X.2016.07.003e¢óôõöÆ7Æ÷øçÈÉùúûp#E1,2,FGH2,#IJ1,9=K3(1.g³¯Nc,deNO,l,g³h6454000;2.ijc,devkNO,l,lmij430072;3.nopNOqr(RQ)rstu,RQ200031)IJ
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3、@W®PÒ¾sÁ«<¨=Òvk=SSKV?nz¤,cüVt9î·ÒoSuõ¢,züÀtÔÃqM、IqM、34*u4、rzyn;ÃqMLIqMKc,=S12ÆVÄ&:·KðÚ;I-34Vk¹É)²ÓKÆ:ÅÒÓ20%)R;XSu²5_zr£æà_éæà,^9²ÓKÆ:ÅÄ&,ZuÀ;RPâVz¤Ú{.þæ5、@,®PÒ¾úð?nsÁ-rðÚVÍSø¼z¤.KLM:=Òvk;ÓwK¾;t9î·Òo;Ò¾úð;Ãq;Iq;34;u>NOPQ:TU312;TU972RSTUV:ARWXQ:1008973X(2016)07123908犈犳犳犲犮狋狅犳犪犲狉狅犱狔狀犪犿犻犮狅狆狋犻犿犻狕犪狋犻狅狀狋狅犪犮狉狅狊狊狑犻狀犱狉犲狊狆狅狀狊犲狅犳狊狌狆犲狉狋犪犾犾犫狌犻犾犱犻狀犵狊1,2,LIANGShuguo2,WANGZekang1,ZHANGZhengwei3WANGLei(1.犛犮犺狅狅犾狅犳犆犻狏6、犻犾犈狀犵犻狀犲犲狉犻狀犵,犎犲狀犪狀犘狅犾狔狋犲犮犺狀犻犮犝狀犻狏犲狉狊犻狋狔,犑犻犪狅狕狌狅454000,犆犺犻狀犪;2.犛犮犺狅狅犾狅犳犆犻狏犻犾犪狀犱犃狉犮犺犻狋犲犮狋狌狉犪犾犈狀犵犻狀犲犲狉犻狀犵,犠狌犺犪狀犝狀犻狏犲狉狊犻狋狔,犠狌犺犪狀430072,犆犺犻狀犪;3.犃狉狌狆犐狀狋犲狉狀犪狋犻狅狀犪犾犆狅狀狊狌犾狋犪狀狋狊(犛犺犪狀犵犺犪犻)犔犻犿犻狋犲犱犆狅犿狆犪狀狔,犛犺犪狀犵犺犪犻200031,犆犺犻狀犪)犃犫狊狋狉犪犮狋:Windtunneltestsofmultidegr7、eeoffreedom(MDOF)aeroelasticmodelwereconductedinordertoanalyzetheinfluenceofaerodynamicmodificationsonacrosswindresponseofsuperhighrisebuildingswithsquaresection.Theacrosswinddisplacementsofthemodelswithvariouschamferingratio,roundingratio,op8、eningsandroughnessweremeasured.Resultsshowedthatthevortexinducedvibration(VIV)displacementsweresignificantlydecreasedwhenthechamferingratiowaslargerthan5%ortheroundingratiowaslargerthan15%.Undertheseconditions,theVIVRMSdisplacementswerealmostlinear9、withreducedwindspeed.Theresponseleveldecreasedwithincreasingchamferingratioorroundingratio,whichmeansthepossibilityofvortexinducedresonancephenomenawasdecreased.Thesettingofthespecificroughcanreducetheamplitudeofthevibrationresponseofthevortexbymore10、than20%.Theopeningscanmakethevortexvibrationresponseamplitudedecrease,especiallywhentheopeningislocatedatthemiddleofthemodel.Insummary,aerodynamicoptimizationisanefficientwaytocontrolthevortexinducedvibrationofsupertallbuildings.犓犲狔狑狅狉犱狊:supertallb
4、rzyn;ÃqMLIqMKc,=S12ÆVÄ&:·KðÚ;I-34Vk¹É)²ÓKÆ:ÅÒÓ20%)R;XSu²5_zr£æà_éæà,^9²ÓKÆ:ÅÄ&,ZuÀ;RPâVz¤Ú{.þæ
5、@,®PÒ¾úð?nsÁ-rðÚVÍSø¼z¤.KLM:=Òvk;ÓwK¾;t9î·Òo;Ò¾úð;Ãq;Iq;34;u>NOPQ:TU312;TU972RSTUV:ARWXQ:1008973X(2016)07123908犈犳犳犲犮狋狅犳犪犲狉狅犱狔狀犪犿犻犮狅狆狋犻犿犻狕犪狋犻狅狀狋狅犪犮狉狅狊狊狑犻狀犱狉犲狊狆狅狀狊犲狅犳狊狌狆犲狉狋犪犾犾犫狌犻犾犱犻狀犵狊1,2,LIANGShuguo2,WANGZekang1,ZHANGZhengwei3WANGLei(1.犛犮犺狅狅犾狅犳犆犻狏
6、犻犾犈狀犵犻狀犲犲狉犻狀犵,犎犲狀犪狀犘狅犾狔狋犲犮犺狀犻犮犝狀犻狏犲狉狊犻狋狔,犑犻犪狅狕狌狅454000,犆犺犻狀犪;2.犛犮犺狅狅犾狅犳犆犻狏犻犾犪狀犱犃狉犮犺犻狋犲犮狋狌狉犪犾犈狀犵犻狀犲犲狉犻狀犵,犠狌犺犪狀犝狀犻狏犲狉狊犻狋狔,犠狌犺犪狀430072,犆犺犻狀犪;3.犃狉狌狆犐狀狋犲狉狀犪狋犻狅狀犪犾犆狅狀狊狌犾狋犪狀狋狊(犛犺犪狀犵犺犪犻)犔犻犿犻狋犲犱犆狅犿狆犪狀狔,犛犺犪狀犵犺犪犻200031,犆犺犻狀犪)犃犫狊狋狉犪犮狋:Windtunneltestsofmultidegr
7、eeoffreedom(MDOF)aeroelasticmodelwereconductedinordertoanalyzetheinfluenceofaerodynamicmodificationsonacrosswindresponseofsuperhighrisebuildingswithsquaresection.Theacrosswinddisplacementsofthemodelswithvariouschamferingratio,roundingratio,op
8、eningsandroughnessweremeasured.Resultsshowedthatthevortexinducedvibration(VIV)displacementsweresignificantlydecreasedwhenthechamferingratiowaslargerthan5%ortheroundingratiowaslargerthan15%.Undertheseconditions,theVIVRMSdisplacementswerealmostlinear
9、withreducedwindspeed.Theresponseleveldecreasedwithincreasingchamferingratioorroundingratio,whichmeansthepossibilityofvortexinducedresonancephenomenawasdecreased.Thesettingofthespecificroughcanreducetheamplitudeofthevibrationresponseofthevortexbymore
10、than20%.Theopeningscanmakethevortexvibrationresponseamplitudedecrease,especiallywhentheopeningislocatedatthemiddleofthemodel.Insummary,aerodynamicoptimizationisanefficientwaytocontrolthevortexinducedvibrationofsupertallbuildings.犓犲狔狑狅狉犱狊:supertallb
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