简支梁桥毕业设计潘风

青岛理工大学毕业设计（论文）I摘要本设计是根据设计任务书的要求和相关规范的规定,对济南市平阴县浪溪河预应力混凝土简支梁桥进行方案比选和设计的。对该桥的设计，应遵循“安全、经济、美观、实用”的设计原则。经由以上的设计原则以及设计施工等多方面考虑、比较后确定装配式后张法预应力混凝土简支梁桥(夹片锚具)为最佳方案。在设计中，桥梁上部结构的计算着重分析了桥梁在使用中恒载以及活载的作用力，采用整体自重系数，荷载集度进行恒载内力的计算。运用杠杆原理法、修正刚性横梁法求出活载横向分布系数，并运用最不利荷载方式进行活载的加载。进行了梁的配筋计算，估算了钢绞线的各种预应力损失，并进行预应力阶段和使用阶段主梁截面的强度和变形验算、锚固区局部强度验算、挠度的计算和横隔梁、行车道板的相应计算。本设计全部设计图纸采用计算机辅助设计绘制，并充分利用了CAD、Word、Excel等软件进行编档、排版，打印出图及论文。关键词预应力混凝土；简支青岛理工大学毕业设计（论文）II青岛理工大学毕业设计（论文）IIIAbstractThisdesignisaccordingtotherequirementofthedesignspecificationandtherelevantnorms,thewavePingYinXiankosiprestressedconcretebeambridgeschemecomparisonanddesign.Thedesignofthebridge,weshouldfollowthesecurity,economic,beautiful,practicaldesignprinciple.Throughtheabovedesignprinciplesanddesignandconstructionaspectsdeterminedafterconsiderationandcomparisonofthefabricatedaftertensioningprestressedconcretebeambridge(jawanchorage)asthebestsolution.Inthedesignofbridgeupperstructure,thecalculationoffocusedonanalysisofthebridgeisinuseinconstantloadandliveloadforce,usingthewholeweightcoefficient,loadofconstantloadinternalforcecalculation.Usingtheleverprinciplemethod,rigidlawliveloadtransversedistributioncoefficient,andusingthemaximumloadliveload.Thebeamreinforcementcalculation,estimationofthelossofprestresssteelstrand,andprestressedphaseandusephaseofthemainbeamsectionofthestrengthanddeformationcalculation,anchoragezonelocalstrengthcalculationandthecalculationofthedeflectionof.Thesubstructureadoptstoboredpileforfoundationofpiercolumn,usingrubberbearing,andthepilefoundationcalculationandchecking.Thedesignofalldesigndrawingsusingcomputeraideddesigndrawing,andmakefulluseoftheCAD,Word,softwaresuchasExcel,archiving,publishing,printoutmapsandpapers.keywordPrestressedconcrete;Simply-supported青岛理工大学毕业设计（论文）IV青岛理工大学毕业设计（论文）I目录摘要…………………………………………………………………………………IAbstract………………………………………………………………………………III前言..............................................................1第1章设计资料及构造布置.....................................................................................31.1设计资料......................................................31.1.1桥梁跨径及桥宽...........................................31.1.2设计荷载.................................................31.1.3材料及工艺...............................................31.1.4设计依据.................................................31.1.5基本计算数据.............................................31.2横截面布置.........................................................................................................31.2.1主梁间距与主梁片数.................................................................................31.2.2主梁跨中截面主要尺寸拟定......................................................................51.3横截面沿跨长的变化........................................................................................81.4横隔梁的设置....................................................................................................8第2章主梁作用效应计算.........................................................................................92.1永久作用效应计算............................................................................................92.1.1永久作用集度.............................................................................................92.1.2永久作用效应...........................................................................................102.2可变作用效应计算..........................................................................................112.2.1冲击系数和车道折减系数.......................................................................112.2.2计算主梁的荷载横向分布系数...............................................................122.2.3车道荷载的取值.......................................................................................162.2.4计算可变作用效应...................................................................................162.3主梁作用效应组合..........................................................................................20第3章预应力钢束的估算及其布置.......................................................................223.1跨中截面钢束的估算和确定..........................................................................223.1.1按正常使用极限状态的应力要求估算钢束数.......................................223.1.2按承载能力极限状态估算钢束数...........................................................223.2预应力钢束布置..............................................................................................233.2.1跨中截面及锚固端截面的钢束位置.......................................................23青岛理工大学毕业设计（论文）II3.2.2钢束起弯角和线形的确定.......................................................................263.2.3钢束计算...................................................................................................26第4章计算主梁截面几何特性.......................................314.1截面面积及惯矩计算......................................................................................314.1.1净截面几何特性计算...............................................................................314.1.2换算截面几何特性计算...........................................................................324.2截面净距计算..............................................................