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ID:36546696
大小:400.84 KB
页数:5页
时间:2019-05-11
《明州大桥钢桥面铺装层ERS施工技术》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、桥梁建设2012年第42卷第2期(总第212期)BridgeConstruction,Vo1.42,No.2,2012(TotallyNo.212)1l5文章编号:1003—4722(2012)02~00115—05明州大桥钢桥面铺装层ERS施工技术杨崇国,刘小勇。(1.中铁大桥局集团桥科院有限公司,湖北武汉430034;2.中交二航局第二工程有限公司,重庆400023)摘要:为了解决钢桥面板与铺装层间防水、抗滑移、高温稳定等问题,宁波明州大桥主桥钢桥面板铺装层采用树脂沥青组合体系(ERS)桥面铺装技术,桥面铺装
2、结构组成为40mm高粘改性沥青(SMA一13)+改性沥青防水粘结层+25mm环氧沥青混凝土(RA05)+环氧粘结碎石层(EBCL)。通过对钢桥面板喷砂除锈,达到Sa2.5级;按比例混和EBCL胶料,分2层涂刷,同时洒布碎石;摊铺RAO5混合料,并用胶轮压路机碾压,在其固化后洒布防水粘结层;摊铺SMA一13沥青混凝土层,采用钢轮十胶轮+钢轮的组合方式碾压,确保了ERS施工质量,桥面铺装效果良好。关键词:拱桥;钢桥面;铺装;树脂沥青组合体系;桥梁施工中图分类号:U448.22;U443.33文献标志码:AConstr
3、uctionTechniquesforERSofSteelDeckSurfacingLayerofMingzhouBridgeYANGChong—guo.LIUXiao—yong。(1.BridgeScienceResearchInstituteLtd.,ChinaRailwayMajorBridgeEngineeringGroup,Wuhan430034,China;2.TheSecondEngineeringCo.,Ltd.,CCCCSecondHarborEngineeringCo.,Itd.,Chongq
4、ing400023.China)Abstract:Tocopewiththeproblemsofthewaterproof,slipresistanceandhightemperaturestabilityofdecksurfacinglayerwithsteeldeckplate,thedecksurfacingtechniqueofepoxyresinasphaltsystem(ERS)wasappliedtothesteeldecksurfacinglayerofthemainbridgeoftheMing
5、zhouBridgeinNingbo.Thestructureofthesurfacinglayerofthebridgecomprised4Ommhighviscositymodifiedasphalt(stonemasticasphalt,SMA一13)@waterproofbindinglayerofthemodifiedasphalt@25himepoxyresinasphaltconcrete(RA05)+epoxybondcrushedstonelayer(EBCL).AfterthesteeIdec
6、kplatesofthebridgeweresandblastedtotherustremova1levelofSa2.5,thebinderfortheEBCIwasblendedaccordingtoitsproportionandwasthenbrushedon—tothedeckplatesintwo1ayers.Atthesametime,thecrushedstoneswerespread,theRA05waslaidandcompactedbytherubberwheelroadroller.Whe
7、nthesesurfacingmaterialswereset,theSMAl3was1aidandwascompactedbythecombinedwayofthesteelwheel+rubberwheel+steelwhee1.Withthetechnique,theconstructionqualityoftheERSwasguaranteedandthesoundeffectofthedecksurfacingofthebridgewasachieved.Keywords:archbridge;stee
8、ldeck;surfacing;epoxyresinasphaltsystem;bridgeconstrue—tjOn1工程概况梁,大桥全长约1.35km,其中主桥长650m,为中明州大桥是宁波市东外环路跨越甬江的过江桥承式双肢钢箱系杆提篮拱桥E,跨径组合为(100+收稿日期:2011—05—24作者简介:杨崇国,工程师,E—mail:825785597@qq.corn。
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