40+60+40-m预应力混凝土变截面连续梁桥设计计算书

纬一河2#桥设计计算书（上部结构）大连理工大学本科毕业设计盘锦新区纬一河二号桥设计TheDesignoftheNo.2BridgeontheWeiYiRiverintheNewDistrictofPanJin学院（系）：建设工程学部专业：土木工程学生姓名：蒋超学号：200951194指导教师：王骞（讲师）评阅教师：完成日期：2013.6.10大连理工大学DalianUniversityofTechnologyAbstractThisarticlemainlydiscussesthedesignandcalculationprocessoftheNo.2BridgeontheWeiYiRiverintheNewDistrictofPanJin.First,makeacomparisonandadecisionofbridgeschemes.Accordingtotheactualsituationofthelocationofthebridgeandthedesignrequirements,preliminarytwoschemesareworkedoutincludingasimplysupported：ContinuousgirderbridgeandArchbridge.Consideredthesecurity,theeconomy,thepracticalapplicabilityandthebeauty,adesignschemeischoseneventuallyafterthecompariasion.TheContinuousgirderbridgetheappearanceofwhichisarchbridgewithhanginggirderischosenasthefinalbridgescheme.Thefinalbridgeschemehasbeendecided.First,themaindimensionsandthedetailsizeofthebridgestructureneedtobeformulatedcombinedpreviousdesignexperience,specification,andtheinformationofthebridgesthathavebeenbuilttocalculatethestructureforthenextstep.Secondly,calculatetheupperstructureincludingthebeamandtheboxgirder.LearnhowtouseMidasandbuildthemodelofthemainpartofthebridgebyMidastocalculatetheupperstructureofthebridge.Configuratethecommonmechanicalreinforcementandthedistributionreinforcementaccordingtotheinternalforceofupperstructurecalculated,andinputthereinforcementconfiguratiedtothemodelestablishbyMidas.Finally,thecheckingcalculationofcrackwidth,strengthandrigidityisdonetothebridgewhichhasbeenmatchedthereinforcementwell.Calculatethebottomstructureafterthecompletionoftheupperstructurecalculation.Thebottomstructuralcalculationismainlyaboutthecapandpilefoundation,includingthedecisionofthesize,reinforcementdesignandcheckingcalculationofstrengthofthecapandpilefoundation.ThepilewhichhasbeengivenreinforcementneedtobeconsideredthebearingcapacityunderE2earthquakeforcewhethermeetthespecificationrequirements.Finally,sum