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1、橋梁建設(shè)2009年增刊2文章編號：1003—4722(2009)S2一Ol1O—O4鋼箱梁拼裝及橋位焊接的監(jiān)理穆金祿(中鐵大橋局集團橋科院有限公司，湖北武漢430034)摘要：為使鋼箱梁橋位焊接后能符合設(shè)計給定的線形，從預(yù)拼裝階段開始，控制各項工序的質(zhì)量。鋼箱梁的制造和預(yù)拼裝可分為長線法和短線法。懸索橋的鋼箱梁吊裝時，鋼箱梁的空間位置由主纜線形和吊索長度確定，鋼箱梁吊裝后其線形已經(jīng)確定，不可能在吊裝過程中或吊裝后再行調(diào)整；而斜拉橋則在鋼箱梁吊裝時，通過施工監(jiān)控逐個調(diào)整吊裝梁段的索力、遠點的標高和里程實現(xiàn)設(shè)計給定的線形。介紹斜拉橋鋼箱梁吊裝過程中吊裝梁段的調(diào)整方法、合龍段
2、吊裝前后的注意事項。以西堠門大橋為例，說明鋼箱梁橋位焊接施工期的監(jiān)理要點。關(guān)鍵詞：鋼箱梁；拼裝；吊裝；焊接；監(jiān)理中圖分類號：U445．1文獻標志碼：ASupervisionofAssemblingandBridgeSiteWeldingofSteelBoxGirderMUdin-lu(BridgeScienceResearchInstituteLtd．，ChinaZhongtieMajorBridgeEngineeringGroup，Wuhan430034，China)Abstract：Toensurethatthesteelboxgirderweldedatbridg
3、esitecanmeetitsdesignedge—ometry，thequalityofvariousworkingproceduresforthegirdershouldbewellcontrolledfromtheearlystageofpre—assembling．Asteelboxgirdercanbemanufacturedandpre—assembledei—therbythelonglineorshortlinematchmethod．Fortheliftingandinstallationofthesteelboxgirderofasuspension
4、bridge，thespatialpositionofthegirderisdeterminedbythegeometryofthemaincablesandlengthOfthesuspenders。Oncethegirderisinstalled，thegeometryofthegirderhasalreadybeendeterminedanditisimpossibletofurtherreadjustthegeometryofthegirderduringorafterinstallationofthegirderwhilefortheinstallationo
5、fthesteelboxgirderofacable—stayedbridge，thedesignedgeometryofthegirderisgenerallyrealizedthroughadjust—mentofthecableforces，far-pointelevationandmileageofeachinstalledgirderblockbymeansofconstrUCtionmonitoringandcontro1．Themethodsforadjustmentoftheinstalledgirderblocksincourseofinstallat
6、ionofthesteelboxgirderofthecable-stayedbridgeandmattersofattentionbe—foreandaftertheinstallationoftheclosureblockofthebridgearepresented．BywayofexampleofXihoumenBridge，severalkeypointsofthesupervisionduringtheweldingconstructionofthesteelboxgirderatbridgesitearenarrated．Keywords：steelbox
7、girder；assembling；liftingandinstallation；welding；supervision1前言設(shè)計給定的線形，必須從預(yù)拼裝階段開始，嚴格控制為保證鋼箱梁橋位焊接后，鋼箱梁的線形符合預(yù)拼裝等各工序的質(zhì)量。相應(yīng)的監(jiān)理工作主要有預(yù)收稿日期：2009—05—11作者簡介：穆~(1940-)，男，教授級高工，1964年畢業(yè)于唐山鐵道學(xué)院應(yīng)用力學(xué)專業(yè)(mjl1940@126．com)。鋼箱梁拼裝及橋位焊接的監(jiān)理穆金祿111拼裝階段的控制、吊裝時的線形控制、焊前準備和焊些牙板上組裝鋼箱梁，可以使制造和預(yù)拼裝一次完接時機、
