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1、兰州交通大学毕业设计（论文）摘要：福厦路口高架桥工程，桥梁全长135米，为三跨钢连续梁结构（40+55+40），上部结构为钢箱梁，桥宽25米，桥面铺装为：8厘米水泥混凝土+8厘米沥青混凝土。本设计根据设计任务要求,依据现行公路桥梁设计规范,兼顾实用，安全，经济，美观的原则；在比较了下承式钢管混凝土拱桥、预应力混凝土连续梁桥、预应力混凝土连续刚构桥的力学特性后，选择连续钢箱梁桥作为在给定地形图下的设计方案，进行了结构细部尺寸拟定、静活载内力计算、配筋设计及控制截面强度、应力验算，活载变形验算等。经分析比较及验算表明该设计计算方法正
2、确，内力分布合理，符合设计任务的要求。本设计采用连续梁方案，其上部结构为40m+55m+40m。上部钢箱梁结构采用单箱三室，桥面宽25m，桥面为单幅布置采用单箱三室形截面可以相对减轻自重和降低施工难度，钢箱梁在工厂预制，施工现场采用悬臂拼装的施工方法。初步拟定墩高为10m，中墩墩柱中间间距为4m，横桥向由2根立柱组成。边墩墩柱中间间距为3.5m，横桥向由三根立柱组成，中墩承台尺寸为:14m×6.5m×3.5m,。边墩承台尺寸为：13m×3m×2m。基础均采用直径为1.5m的钻孔灌注桩基础。关键词：方案连续钢箱梁桥桥墩桩基础结构分
3、析验算Abstract:TheFuXiaintersectionviaductproject,thecontinuoussteelboxbeambridgespan135meters,arethreecrosssteelcontinuously(40.+55+40),thesuperstructureiscontinuoussteelboxbeam,thebridgewidth25meters,theflooringis:8centimeterscement-concreteand8centimetersasphalt-conc
4、retes.Thisdesignbasisdesignsthemissionrequirement,thebasispresenthighwaybridgedesignstandard,theproperattentiontobothispractical,safe,economy，artisticprinciple;Afterhascomparedthebottom-roadbridgesteelpipeconcretearchedbridge,theprestressedconcretecontinuousbridge,th
5、eprestressedconcretecontinuousrigid-framebridgemechanicalproperties,thechoicecontinualsteelboxbeambridgetookinassignsunderthetopographicdiagramthedesignproposal,carriedonthestructuredetailsizetodrawup,thestaticliveloadendogenicforcecomputation,tomatchthemuscledesigna
6、ndthecontrolsectionintensity,thestressCheckingcalculation,theliveloaddistortedCheckingcalculationandsoon.AftertheanalysiscomparisonandCheckingcalculationindicatedthisdesigncalculationmethodcorrect,theendogenicforcedistributioninreasonable,conformstothedesigndutyrequi
7、rement.Thisdesignusesthecontinuoussteelboxbeambridgeplan,itssuperstructureis40m+55m+40m.Upsidethesteelboxbeamstructureusessinglebox-threeroom,bridgebreadth25m,thebridgefloorusesthesinglebox-three56兰州交通大学毕业设计（论文）roomshapessectionforsingleframethearrangementtobeallowed
8、relativelytoreduceisself-possessedandreducestheconstructiondifficulty,steelboxbeaminthefactoryprefabrication,thejob-locationusesthe
