桥梁抗风气动措施的研究及应用

:2001-11-22:(1950-),,,.,,(,200092):.,,..:;;:U441.3;V211.74:A:0253-374X(2002)05-0618-04ResearchandApplianceofAerodynamicMeasuresaboutWind-resistanceofBridgesSONGJin-zhong,LINZhi-xing,XUJian-ying(StateKeyLaboratoryforDisasterReductioninCivilEngineering,TongjiUniversity,Shanghai200092,China)Abstract:Thispaperintroducestheresearchandapplianceoftheaerodynamicmeasuresinvolvedinthewindresistanceresearchtakeninthewindtunnellaboratorytowhichtheauthorbelongs.Thesemeasuresincludeairflow-depressingboardforreducingtheamplitudeofvortexshedding,theapronboardandguideplateforincreasingthecriticalwindspeedofflutter,thesteeringapparatusforreducingtheresponseofgalloping,andtheflutingschemeofthegirdfortheimprovementoftheaerodynamicperformance.Atthemeantime,thispa2perexpoundsthesocialandeconomicbenefitsbroughtaboutbythesemeasures.Keywords:wind-resistanceofbridge;aerodynamicmeasure;wind-tunneltest,1385m628m,1490m..,;,,.,[14].,,.,.,.:,,.,,.,,.,.1288m[5],,.,,,12.8ms-130520025JOURNALOFTONGJIUNIVERSITYVol.30No.5May2002©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved..0.810,16%.,1.2,50%..1.1(:m)Fig.1CrosssectionofDongyingBridgeovertheYellowRiver(unit:m)22.1,605m29m[6].23.5m,,.,,+355ms-1,70ms-1.,1m1mL(2),74ms-1.35%,,,,6500.,20002001,.2(:m)Fig.2CrosssectionofQingzhouBridgeovertheMinRiver(unit:m)2.2[7],423m,,30.35m.,1/3(3),10%..3(:m)Fig.3CrosssectionofNanpuBridgeovertheHuangpuRiver(unit:m):,.,,9165,:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved..,,.33.1900m,920m[8],,,,,,,(4),1.5,30%,.(CFD).CFD:.,.4(:m)Fig.4CrosssectionofLingdingWestWaterwayBridgeovertheLingdingSea(unit:m)3.2,[9].84m,7.5m,4.953.95m,1.51.9,,,(5),.45.8ms-1,40%12%,80%23%.71%()40%()..5(:mm)Fig.5Crosssectionofguide-waybusShidamilineovertheYatagawa(unit:mm)4.,,.4.102630©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.258m[10],,31m,2.5m.,.,,(6),,.:.6(:m)Fig.6CrosssectionofthesecondbridgeovertheOuRiver(unit:m)4.2602m,[11].32.5m,,.,11.6,.,(7).600t540.7(:m)Fig.7CrosssectionofYangpuBridgeovertheHuangpuRiver(unit:m)5,,..().,CFD,.:[1]YamadaHitoshi.WindtunneltestingsarealmostGreek[J].,1993,(1):53-57.[2]YozoFujino.Vibrationandcontroloflong-spanbridge[A].AdvancesinStructuralDynamics[C].Oxford:ElsevierScienceLtd,2000.55-66.[3]FujinoYozo,WildeKrzysztof,KawakamiToshinobn.Newcontrolmethodforfluttersuppressionoflong-spanbridge[A].IabseSymposium[C].Kobe:[s.n.],1998.161-166.[4]XIANGHai-fan,CHENAi-rong.Aerodynamicstudiesoflong-spancable-supportedbridgeinChina[A].AdvancesinStructuralDy2namics[C].Oxford:ElsevierScienceLtd,2000.121-132.[5].[R].:,1986.[6].[R].:,1999.[7].[R].:,1990.[8].[R].:,1997.[9].[R].:,1999.[10].[R].:,1994.[11].[R].:,1992.1265,:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.