南京大胜关长江大桥吊索塔架设计与施工

(,430050):683,68.5m,3,3,23,1~36~8,:;;;;:U445.3:A:1671-7767(2010)03-0001-04(),,,,(@6)19273.237m,1615m,:2(84+84)m+(108+192+336+336+192+108)m,16,300km/h250km/h80km/h,4,192m2336m1,,410108m,;68,68,68;7368[1]23,,,80000kN/,,68168m,7156m,,68,7,,4:++;++;!++;++(5#)+2,68,332.13,15m,1:2009-12-24:1977-2001Email:taiki12.com13,2,,68.5m22.1.1,,,[2]3,30000kN/,25000kN/4400kN/,3800kN/,10Q345B,2H,H,3()368m1553(),5,,,6()()A24(A24),500mm,45,,8000mm,7980mm,20mm,H,,4550mm,4530mm,20mmCDE(2),2H,,400mmCD4250mm,4230mmE3500mm,3480mmM30,Q345C2.1.2Q235B,,,,M27,Q345C2.1.3,25000kN,Q370qE,Q345C2.233,2.0,[]%0.50Rb,&2.52.0[3]47mm,M,5(5M,SM5,~32201034.m2440mm4440mm2H81770Pa1.910PaPEPE1171800mm900mm1000mm,634,86,314613/kN/mm/())111456110044(10974(10976957218064426.1020.65213127127164(12774(127710222320670313.6719.44316146167764(15174(151712461923028910.7018.46:33.13.1.12:;,,,500mm400mm:3.1.26870t,200t400t3500mm,,,,,6,,1,2,X11121,342,2,1,561,3,1,,325512,P,(OVM)80kN,,33636mm,2,100kN,3,,70t,200t400t3.268811131~3,,,,,382,,,,,,24650t+,,2,2%,5cm268kN1792076001980190029705100002426250031448015000362037503.3,3,,,3,6~8,,:,;;!,;,68;,,,6;.50%,30%,,,[1],,,,6~8,,,3.4,,322,,0.3%,21,1,21,2,31,4687,,,36833,2009928,20101:[1],.[J].,2009,(6):6-10.[2].[J].,2008,(8):43-45.[3]JTG/TD65-01-2007,[S].DesignandConstructionofFasteningStayTowersforDashengguanChangjiangRiverBridgeinNanjingSHENTao(ChinaRailwayMajorBridgeEngineeringGroupCo.,Ltd.,Wuhan430050,China)TN6NfD()420103Abstract:hethreemaintrussessteeltrussarchesatpierso.ando.8oashengguan22,300mm,(+)(-)1,,(),,,10%~15%()5(1),,97.5%,98.54%,,(2),,:[1].(1)[M].:,2001.WeldingTechniquesforSteelBoxTiedArchofQiuhouBridgeZENGZhirong(WuhanBridgeHeavyIndustriesGroupCo.,Ltd.,Wuhan430056,China)Abstract:TheQiuhouBridgeisasteelboxtiedarchbridgewithamainspan128m.ThestructureofthetiedarchthereofiscomplexandtheweldingseamsintheboxandT(/)shapemembersarecongested.Byusingthecombinedmethodofgasshieldedarcweldingandautomaticsubmergedarcwelding,theweldingtechniqueslikethelowheatinputweldingprocessandthereasonableweldingsequence,thedefectsthatwerepronetotheweldingseamswereeliminated,thelowtemperatureimpacttoughnessoftheseamswasimprovedandthedimensionaccuracyandweldingqualitywereensured.Keywords:steelboxarchbridge;weldingtechnique;weldingquality(4)ChangjiangRiverBridgeinNanjingwerecantileveredlyerectedatbothsidesbygirdererectioncranesbytheaidoffasteningstaytowers.Atoweritself,68.5minheight,wasthestructurebuiltwiththreetrussesandwascomposedofthreepartsoftheposts,lateralbracingsystemsandanchorboxes.Intheconstruction,thefirstsectionofthetowerwasinstalledbyfloatingcraneandthesectionsabovethefirstsectionwereinstalledjointlybytwotowercranes.Oneachtrussofthetower,threelevelsoftheasymmetricalstaycablesweresetandthestaycableswereinstalledandtensionedintheorderfromthefirsttothethirdlevelsofthecables.TheaccurateclosureofthegirdersofthemainarcheswastobefinallyrealizedthroughadjustingthecableforcesofthestaysonthetowersandthehorizontalcablesatpiersNo.6~No.8,andkeepingtheverticaldisplacementandrotationanglesofthepanelpointsateachsideoftheclosuregapidentical.Ky;fy;;;2220103ewords:steelgirderasteningstatowerbridgeerectionconstructionmethodclosure