杭州市钱江四桥钢管混凝土顶升施工技术

:1003-4722(2006)02-0064-031,2(1.,530011;2.,530001):11,170cm,,:;;:U448.225;U445.57:AConstructionTechniquesforPumping2upofConcreteintoSteelTubesofthe4thQiantangjiangRiverBridgeinHangzhouWANGJie2yun1,CHENGuang2hui2(1.GuangxiXinfazhanCommunicationGroupCo.,Ltd.,Nanning530011,China;2.GuangxiHighway&BridgeEngineeringCorporation,Nanning530001,China)Abstract:Thesuperstructureofmainbridgeofthe4thQiantangjiangRiverBridgeisan112spanconcrete2filledsteeltubetiedarchbridgewiththelargestdiameterofthearchribsteeltube170cm.Inthispaper,themixproportioningdesignoftheconcretefilledintothesteeltubesoftheBridgeandconcreteconstructiontechnologybypumping2upmethodarepresented,andthequalitycontrolandinspectionfortheconcreteinthetubesaredescribedaswell.Keywords:tiedarchbridge;concrete2filledsteeltubestructure;bridgeconstruction:2005-11-22:(1966-),,,1988,1,,,,,,,11[1](1),,6,285m+190m+585m+190m+285m,85m,1/7,,170cm22mm,6190m,1/4,,,95cm2224mm4C50211,34,650033.1,46200621,,+;,;,;,;,,,;,3.2,,,:400kg(42.5R)714kg947kg195kg93kg51kg(JM2,):R7=53.1MPaR28=60.6MPa(222)cm3h3cm10h0.04%4:,,,,,,,,,,,,,11,170cm1895cm16,,:,,,,,100m3/h(2),HBT60C(2,2),125mm(2),,,2120mm150cm2(3),134h85m1d2(1),190m1d4(1/2),20,85m170cm,(4)2385m56,485m,,,55.1:,;,5.23:;;85m8mm216,1018m0.32.0cm;190m8mm88,41020m0.21.7cm,32,L/4,,6(1),85m170cm,(2),,,(3),:[1].()[Z].2003.(63)1/mm2/mm0.25/mm31/10000/mm3/%50/mm4/%40/mm4/%25(1):1/10000;0.7/10000(2):0.95mm(3):6mm/4.3,,1/400022/%75.072.7100.01/88001/650075.086.484.11/110001/840067.484.177.31/2000001/1200063.272.7100.01/460001/7500:T21,,T20;,;,5200422320041231,10,,,,6620062