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1、摘要本设计题目为贤村桥2号预应力混凝土连续梁桥,该桥位于京福高速公路泰安至曲阜段,桥梁跨径布置为24+26+24m,双向四车道,上部结构采用先简支后连续的预应力混凝土连续T型梁桥。简支转连续是桥梁施工中较为常见的一种方法,该施工方法的主要特点是施工方法简单可行,施工质量可靠,实现了桥梁施工的工厂化、标准化和装配化。目前随着高等公路的发展,为改善桥梁行车的舒适性,简支转连续梁桥在中、小跨径的连续梁桥中得到了广泛地应用。在设计过程中,综合考虑了材料以及结构的强度、刚度、稳定性,还注意到了混凝土强度以及钢筋等级及其性能。使本桥梁设计兼具简支梁的经济易施工特点和连续梁的结构稳定、
2、受力状态好的优点,是值得推广和使用的一种有效梁跨方式。本设计参阅了很多相关设计及规范,也采用了一些既有设计成果,使得设计具有一定的实践性,同时也采用了MIDAS来计算桥梁结构内力,节约了设计时间,设计过程中得到指导老师的悉心指导及帮助,使我的设计事半工倍,在此对设计界的前辈及指导老师表示衷心的感谢!由于设计时间仓促,加上本人经验有限,设计中难免会有许多不足或缺点,请大家提出宝贵意见及建议。关键词:简支转连续;预应力;MIDASIIAbstractThedesignentitledJuxianVillage,Bridge2,prestressedconcretecontin
3、uousgirderbridge,thebridgeislocatedinJingfuExpresswayTai'antoQufusection,bridgespanarrangementforthe24+26+24m,two-wayfour-lane,theupperstructurewithsimplysupportedContinuousprestressedconcretecontinuousT-beambridge.Simplysupportedcontinuousconstructionofthebridgeamorecommonmethodofconstru
4、ction,themainfeaturesoftheconstructionmethodissimpleandfeasible,theconstructionquality,thefactoryrealizedthebridgeconstruction,andassemblyofstandardization.Withthecurrenthighroadofdevelopment,toimprovethedrivingcomfortofthebridge,simplysupportedcontinuousbeambridgeinthesmallspancontinuous
5、bridgehasbeenwidelyapplied.Inthedesignprocess,consideringthematerialandstructuralstrength,stiffness,stability,andalsonotedthestrengthofreinforcedconcreteanditsperformancelevels.Sothatboththesimplebeambridgedesignandeasyconstructionoftheeconomiccharacteristicsandthecontinuousbeamstructural
6、stability,goodmechanicaladvantageofthestate,isworthyofpromotionanduseofaneffectivecross-beammethod.Seealotofthedesignspecificationsrelatedtodesignandalsousedsomeexistingdesignresults,makingthedesignhassomepractical,butalsousedtocalculatethebridgestructureMIDASinternalforces,savingdesignti
7、me,thedesignprocessbyguidingtheteacherCarefulguidanceandhelptomakemydesignworkhalfthetimesinthedesignoftheoldergenerationandtoexpressmysincerethankstotheinstructor!Becauseofthedesigntimeconstraints,coupledwithmylimitedexperience,inevitably,therearemanydeficienciesin