桥梁毕业设计正文

中文题目：双鱼大桥设计副标题：下部结构设计外文题目：Damageanalysisandseismicretrofittingofacontinuousprestressedreinforcedconcretebridge毕业设计（论文）共144页图纸共13张完成日期2015年6月5日答辩日期2015年6月17日摘要本桥为钢筋混凝土预应力简支T型梁桥，先进行基础和下部设计，再进行桥面铺装设计，桥全长280m，设7跨，跨径40m，设计荷载为公路-Ⅱ级荷载，设计车速为V=80Km/h。本部分设计为该桥的下部结构设计，主要包括支座设计、盖梁设计、桥墩（桥台）设计、承台设计、桩基设计，该桥梁地处广东省广州市，是广州市绕城公路的重要组成部分，该桥建成之后，使全新通车成为了可能，为广州市的经济发展提供了自己应尽的贡献。本桥设计初期，先是调阅该地段的气候、地质、水文等自然资料，并了解了当地的消费和出工情况，再查阅相应法律法规、计算方法、设计经验和原则，在此基础之上，结合目前的最新规定和当地资料，经过自己细心、认真、严谨的计算和复核而得出的。设计中所有参数、尺寸、形状、方法均是有法可依、有章可循、有例可鉴，体现出了设计的严肃性和规范性。本设计中支座采用板式橡胶支座，桥墩采用的是双柱式钻孔灌注桩桥墩，承台采用T型承台，桥台采用墙式框架埋置式桥台。在计算中充分考虑了水平力、垂直力、制动力、土压力、地震力等可计算和估计出的力，为计算的准确性性提供了的保证。在计算当中还采用了杠杆发、偏心压力法等现代新型计算方法，同时配用计算机和CAD等现代手段加以辅助计算，还参照了正规版的设计计算算例来帮助设计，并加以修正和复核。加大了设计的科学性。关键词：桥梁；验算；设计；尺寸；规范AbstractThebridgeisreinforcedprestressedconcretesimplysupportedTbeambridge,thefirstbaseandthelowerpartofthedesign,inoverseaspavementdesign,bridgeatotallengthof280mandsevencross,40mspan,loaddesignforhighway-gradeIIload,designspeedforV=80Km/h.Thispartofthedesignforthedesignofthesubstructureofthebridge,includingbearingdesign,beamdesign,bridgepier(abutment)design,platformdesign,pilefoundationdesign,thebridgedepartment,GuangzhouCity,GuangdongProvince,isanimportantpartofGuangzhoucity'sbeltwayhighway,afterthecompletionofthebridge,newtrafficaspossible,providewhattheyoughttodocontributionfortheeconomicdevelopmentofGuangzhoucity.Theinitialdesignofthebridge,firstaccesstothelotoftheclimate,geology,hydrologyandothernaturalmaterials,andunderstandthelocalconsumerandindustryandtrade,andthenrefertothelawsandregulations,calculationmethod,designexperienceandprinciples,onthisbasis,combinedwiththelatestregulationsandlocaldata,afteryourselfcarefullyandseriously,rigorouscalculatedandcheckedout.Inthedesignofallparameters,theshape,thesize,themethodarethelawsandrules,withmirror,reflectingtheseriousnessandstandarddesign.Thedesignofbearingwiththelaminatedrubberbearings,piersofdoublecolumnboredpilepiers,capwithTshapedcapabutmentusingwalltypeframeburiedabutment.Inthecalculation,thecalculationandtheestimatedforceofthehorizontalforce,theverticalforce,thepressureofthesystem,theearthpressure,theearthquakeforceandsoonareconsidered,andtheguaranteefortheaccuracyofthecalculationisprovided..Inthecalculationalsousestheleverandeccentricpressedmethod,amodernnewcalculationmethod,alsoequippedwithmodernmeanssuchascomputerandCADaidedcalculation,referringtotheformalversionofthedesigncalculationexamplestohelpdesign,andrevisionandreview.Increasedthescientificnatureofthedesign.Keywords:bridge;checkingcomputations;design;dimension;specification目录0前言..........................................................11桥型方案的比选................................................21.1技术设计标注................................................21.2主要设计依据................................................21.3工程地质资料................................................21.4水温气候资料................................................21.5桥型拟定....................................................31.7墩台类型确定................................................51.7.1桥墩类型确定..............................................51.7.2桥台类型确定..............................................62支座设计......................................................62.1本设计选用板式橡胶支座......................................62.2支座平面尺寸确定............................................62.2.1计算支座的平面形状系数....................................72.2.2计算橡胶支座的弹性模量....................................72.2.3验算橡胶支座的承压强度....................................72.3确定支座厚度................................................72.3.1主梁的计算温差............................................72.3.2计算汽车荷载制动力引起的水平位移..........................82.3.3确定需要的橡胶片总厚度....................................82.4支座偏转情况验算............................................82.4.1计算支座的平均压缩变形....................................82.4.2计算梁端偏转角............................................92.4.3偏转情况验算..............................................92.5支座抗滑稳定性验算..........................................92.5.1温度变化引起的水平力为....................................92.5.2为保证支座与梁底墩台顶面间不发生相对滑动..................93桥墩设计.....................................................103.1盖梁设计...................................................103.1.1盖梁尺寸设计.............................................103.1.2盖梁计算.................................................143.1.3截面配筋设计和承载力校核.................................313.2墩柱设计...................................................403.2.1各墩水平力计算...........................................413.2.2恒载计算.................................................453.2.3活载计算.................................................463.3桩基设计...................................................534桥台设计.....................................................634.1台帽计算...................................................644.1.1荷载计算.................................................644.1.2内力计算.................................................684.1.3截面验算.................................................724.2台墙计算（一片台墙）..................................