毕业论文-黑龙江某大桥m预应力混凝土简支T型梁桥上部结构设计

/本科生毕业设计(论文)题目:黑龙江某大桥35m预应力混凝土简支T型梁桥上部结构设计英文题目:Heilongjiangbridge35mprestressedconcretesimply-supportedbeammodelTupperstructuredesign系:专业:班级:学生:学号:指导教师:职称:指导教师:职称:本科生毕业设计（论文）-1-摘要在工程中预应力混凝土T型简支梁具有刚度大、变形小、行车平顺舒适、伸缩缝少、抗震能力强等优点，因此，无论是公路或者城市桥梁、高架道路还是跨越宽阔的河流桥均是首选的方案之一。在铁路与公路桥梁的建设中，预应力梁得到广泛用，特别是后张法施工的简支梁。它不仅能节约材料，降低造价，而且能增强桥梁的跨越能力，减小梁高。但在大跨度后张简支梁的施工过程中，由于张拉后梁体起拱度太大，影响梁体以上结构层的施工。后张法预应力技术可以节约大量普通钢筋，减少几何截面尺寸和自重，但随着龄期增加以及桥梁投人运营，混凝土徐变会引起比较大的预应力损失，这对大跨度桥梁是很不利的。所以，预应力施工过程中质量控制显得尤为重要，后张法预应力技术被广泛运用在大型桥梁工程中，这需要广大工程技术人员在施工实践中不断地去探索和总结经验，进一步完善后张法预应力的施工工艺，从而提高预应力的施工质量。本设计位于黑龙江，桥位中心桩号为K0+904.73，桥梁全长188.480m。桥面净宽为净7+2×1.0m，设计荷载为公路Ⅱ级，人群荷载为3.0kN/m2。桥梁上部结构采用35m预应力混凝土T梁，横桥向4片主梁，纵向6跨.本桥设3道伸缩缝，分别在两桥台和桥中心处。支座采用普通板式橡胶支座，全桥设48个板式橡胶支座。本桥共进行了三部分内容设计，第一部分水文计算，在此部分计算了设计流量，确定了满足水文要求的最小桥长、桥面最低标高以及冲刷线标高；第二部分进行了上部结构设计，设计了上部结构总、横断面形式，拟定了T梁的截面尺寸，计算了荷载横向分布系数以及主梁内力，进行了配筋设计和结构验算。第三部分对施工工艺进行简要的设计。关键词：预应力混凝土简支T梁；肋板式桥台；本科生毕业设计（论文）-2-Heilongjiangbridge35mprestressedconcretesimply-supportedbeammodelTupperstructuredesignAbstractInengineeringmodelTwithprestressedconcretebeamdistortionandstiffnessbig,drivingsmoothandcomfortable,lessexpansionjointsandanti-seismiccapabilityetc,therefore,whetherhighwayorcityBridges,elevatedroadacrossthebroadriverbridgeisoneoftheschemearepreferred.RailwayandhighwayBridgesintheconstructionofprestressedbeams,widelyused,especiallyofthebeammethodconstructionafterzhang.Itcannotonlysavematerials,reducecost,butalsocanenhanceBridgesacrossability,minusthetrabecularhigh.Butinthelargespanbeamafterzhangconstructionprocess,becausethebodytensionbulgingdegreeswell.numericalexamplesistoogreat,influenceofstructurallayersabovebeambodyconstruction.Thismethodcansavethousandsofordinaryprestressedtechniquereinforced,reducegeometrysectionsizeandself-respect,butwithincreasedageforoperation,andbridgeconcretecreepcancausebiggerprestressloss,thelargespanbridgeisveryharmful.So,prestressedconstructionprocessqualitycontrolappearsespeciallyimportant,zhangmethodafterprestressedtechniquehasbeenwidelyusedinlargebridgeengineering,thisrequiresbroadengineeringandtechnicalpersonnelinconstructionpracticeconstantlytoexploreandsummarizingtheexperience,furtherimprovetheprestressedconstructionofthismethod,soastoimprovetheprocessprestressedconstructionquality.Thisdesignislocatedinheilongjiang,thecenterfor904.73,K0+pilelength,Bridges188.480m.Bridgebanisterscanmeetfor7+2x1.0netforhighwaydesignloadm,Ⅱlevel,thecrowdloadfor3.0kN/m2.Bridge35mupperstructureadoptsprestressedconcreteTbeam,tothebridgegirder,longitudinal64slices.Thisbridgeacrossthreewordsetrespectively,expansionjointsintwoabutmentandbridgecenterplace.Bearings,usingcommonslabrubberbearingsofthewholebridgeset48slabrubberbearings.本科生毕业设计（论文）-3-Thisbridgewereconductedthreepartsdesign,thefirstpart,onthepartofhydrologiccalculationiscalculated,determinesthedesigndischargehydrologicalrequirementsofthebridgemeetthelowestelevationandlong,bridgedeckflushinglineelevation;Thesecondpartoftheupperstructuredesign,designtheupperstructure,drawupthetotal,cross-sectionalformthesectionsizeofTbeam,calculatedloadtransversedistributioncoefficientandtheinternalforce,girderstructurereinforcementdesignandchecked.Thethirdpartofconstructiontechnologybriefdesign.KeyWords：PrestressedconcretesimplespanTbeam；Ribbingabutment；本科生毕业设计（论文）-1-目录摘要...................................................................................................................................1Abstract....................................................................................................................................2引言...................................................................................................................................11文献综述...............................................................................................................................21.1国内外研究状况................................................................................................21.2工程概况....................................................................................................................31.2.1桥面净空..........................................................................................................31.2.2设计荷载..........................................................................................................31.2.3设计水位..........................................................................................................31.2.4计算要求..........................................................................................................31.3结构形式....................................................................................................................31.4主要材料....................................................................................................................31.5上部结构说明书........................................................................................................41.5.1技术标准和技术规范.....................................................................................41.5.2技术标准................................