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1、萬方數(shù)據(jù)西堠門大橋主纜纏絲技術(shù)盧偉,馬青云,李潤(rùn)哲,唐茂林,錢建南,肖安斌55文章編號(hào):1003--4722(2010)01--0055--04盧偉1,馬青云2,李潤(rùn)哲1,唐茂林3,錢建南1,肖安斌(1.四川公路橋梁建設(shè)集團(tuán)有限公司湖南長(zhǎng)沙410114;3.西南,四川成都610041;2.長(zhǎng)沙理工大學(xué),交通大學(xué),四川成都610031)摘要:西堠門大橋主纜除采用重防護(hù)涂裝體系外,還采用“先纏絲,后鋪裝”施工技術(shù)。根據(jù)相關(guān)試驗(yàn)成果,確定施工中纏絲導(dǎo)入張力不小于2.3kN。采用ZLCl000型纏絲機(jī)進(jìn)行主纜纏絲。為方便主纜排水、減少主纜鋼絲暴露外界時(shí)間,纏絲順序?yàn)椋合冗吙绾笾锌纾?/p>
2、邊跨從錨碇向橋塔方向進(jìn)行,中跨則從橋塔向跨中方向推進(jìn)。通過纏絲機(jī)將聲4mm鋼絲均勻緊密地纏繞在已涂覆底漆與不干膩?zhàn)拥乃鲓A間主纜上,間隔一定距離以鋁熱焊劑焊接纏繞鋼絲以保持其纏絲導(dǎo)入力,鋼絲兩端則固定于索夾。關(guān)鍵詞:西堠門大橋;懸索橋;主纜;防護(hù);纏絲;導(dǎo)入力;施工技術(shù)中圖分類號(hào):U448.25文獻(xiàn)標(biāo)志碼:AWireWrappingTechniquesforMainCablesofXihoumenBridgeLUWeil,MAQing-yun2,LIRun-zhel,TANGMao-lin3,QIANJian-nan1,XIAOAn-bin1(1.SichuanRoadand
3、BridgeConstructionGroupCo.,Ltd.,Chengdu610041,China;2.ChangshaUniversityofScienceandTechnology,Changsha410114,China;3.SouthwestJiaotongUniversity,Chengdu610031,China)Abstract:ForthemaincablesofXihoumenBridge,inadditiontothereinforcedcoatingsys—temappliedtothecables,theconstructiontechnique
4、of“wirewrappingfirstanddecksurfacinglate”wasalsoapplied.Inaccordancewiththerelevanttestresults,itwasdeterminedthatthepretensioningforceappliedtothewirewrappingshouldnotbelessthan2.3kN.ThewireswerewrappedontothemaincablesoftheBridgebytheZLCI000wrappingmachine.Tofacilitatethewaterdrainagefro
5、mthecablesandtoreducetheexposuretimeofthewiresofthecablestotheoutside,thesequencesofthewirewrappingwere:thecableswerewrappedfirstlyfromthesidespansandthentothecentralspan.Atthesidespans,thecableswerewrappedfromtheanchor—agetowardsthetowerwhileatthecentralspan,thecableswerewrappedfromthetow
6、ertowardsthemidspan.Bymeansofthewrappingmachine,the拳4mmwireswereuniformlyandtightlywrappedontothecablesthatwerealreadycoatedwithprimerpaintandnon-dryingpasteinbe—tweenthecablebands.Atacertainspacing,thewrappedwireswereweldedby’thetermiteweld—ingtokeepthepretensioningforceinthewiresandbothe
7、ndsofthewireswerefixedintocablebands.Keywords:XihoumenBridge;suspensionbridge;maincable;protection;wirewrapping;pretensioningforce;constructiontechnique收稿日期:2009一10—22基金項(xiàng)目:國(guó)家科技支撐計(jì)劃項(xiàng)目(2008BAGOTB04)作者簡(jiǎn)介:盧偉(1971一).男。高級(jí)工程師,1993年畢業(yè)于重慶大學(xué)工程力學(xué)專業(yè),工學(xué)學(xué)士,1996年畢業(yè)于重慶大學(xué)固體力學(xué)專