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广西工学院鹿山学院毕业设计（论文）题目：某公路互通立交3×30m预应力混凝土连续箱梁桥设计系别：土木工程系专业班级：土建L093姓名：张永环学号：20091994指导教师：朱清元职称：助工（硕士）二〇一三年五月十一日摘要I摘要本设计是根据毕业设计任务书的要求和相关行业的规范,对某公路互通立交桥—30+30+30m预应力混凝土连续箱梁桥进行设计。在设计中，参照已建桥梁设计方案确定桥梁型式和结构型式。桥梁上部结构的计算着重分析了桥梁在使用过程中的恒载和活载内力，采用荷载集度方法，使用力学求解器进行恒载内力的计算，运用杠杆原理法、修正偏心压力法求出活载（汽车、人群）横向分布系数，并运用最大荷载法法进行活载的加载，使用力学求解器进行活载内力的计算，对于其它因素（温度、基础不均匀沉降、徐变）引起的内力，通过手算或电子计算器计算；内力组合计算包括承载力极限状态的基本组合、作用短期效应组合、作用长期效应组合；手算进行了预应力钢筋配筋计算，估算了钢绞线的各种预应力损失，进行持久状况承载力极限状态验算、持久状况正常使用极限状态验算、持久状况构件的应力验算和挠度的计算与验算预拱度的设计。下部结构采用以钻孔端承桩为基础的双墩柱，采用盆式橡胶支座，并分别对桥墩和桩基础进行了计算和验算。施工方式采用碗扣式脚手架满堂支架并进行设计与计算。本设计大部分采取手算，部分采用结构力学求解器辅助计算，全部设计图纸AutoCAD绘制，计算机编档、排版，打印出图及论文。还有，翻译了一篇英文短文“BridgeEngineeringandAesthetics”。关键词：预应力混凝土;连续梁;杠杆原理法;修正偏心压力法AbstractIIAbstractThedesignisbasedongraduationdesigntaskbookrequirementsandrelevantindustrystandards,designof30+30+30mprestressedconcretecontinuousboxgirderbridgeoverpassbridge,ahighway.Inthedesign,designreferencebridgeshavebeenbuilttodeterminebridgetypeandstructure.Calculationofbridgeupperstructurefocusesontheanalysisofthebridgeduringtheuseofdeadloadandliveloadinternalforce,theloaddensitymethod,theuseofMechanicsSolverforcomputingthepermanentload,liveloadusingtheleverprinciplemethod,modifiedeccentric-pressedmethod(car,thecrowd)transversedistributioncoefficientofliveload,andloadingusingthemaximumloadmethod,theuseofmechanicssolvertocalculatetheliveloadinternalforce,theotherfactors(temperature,unevensettlementoffoundation,theinternalforcescausedbycreep),calculatedbyhandortheelectroniccalculator;thecombinationofinternalforcecalculationofbearingcapacitylimitstateincludingbasiccombination,short-termeffectcombination,effectsoflong-termeffectcombination;handcountwereprestressedreinforcementcalculation,lossofprestresssteelstrandestimated,permanentstatusofbearingcapacitylimitstatechecking,permanentconditionnormaluselimitstatechecking,designcalculationandcheckingshouldbelastingpreforcecalculationanddeflectionofthearchdegreeofcomponents.Doublecolumnsubstructureswithdrillingendbearingpilefoundation,thepotrubberbearing,andwereonthepierandpilefoundationwerecalculatedandchecked.Constructionofthescaffoldofthefullsupportanddesignandcalculation.Thisdesignmostlytakehand,partoftheauxiliarysolverstructuralmechanicscomputation,allthedrawingsofAutoCADdrawing,computerfiling,typesetting,printingoutthemapandthe.Also,translatedanEnglishessayBridgeEngineeringandAesthetics.Keywords:prestressedconcrete,continuousbeams,theleverprinciplemethod,modifiedeccentric-pressedmethod.目录III目录摘要.........................................................................................................................错误!未定义书签。ABSTRACT................................................................................................................错误!未定义书签。目录.......................................................................................................................................................III1初步设计..............................................................................................................错误!未定义书签。1.1设计基本资料...............................................................................................错误!未定义书签。1.1.1设计标准................................................................................................错误!未定义书签。1.1.2主要资料................................................................................................错误!未定义书签。1.1.3相关参数................................................................................................................................21.1.4预应力布置............................................................................................................................21.1.5施工方式................................................................................................................................21.1.6设计规范................................................................................................................................21.2桥梁方案设计...............................................................................................................................21.2.1总则........................................................................................................................................21.2.2连续梁施工方案的选择（比选）........................................................................................21.2.3结构构造尺寸........................................................................................................................32上部结构设计与计算..........................................................................................................................52.1桥梁原横截面特性计算...............................................................................................................52.1.1截面特性的计算....................................................................................................................52.1.2检验截面效率指标ρ（希望ρ在0.50以上）........................................................................72.2桥面板的计算和梁有效宽度的计算...................................................................