桥墩设计计算

兰州交通大学毕业设计（论文）I摘要随着我国社会的发展与进步和人民的生活水平的日益提高，交通的便利程度和安全性得到了人们的广泛关注，桥梁又是现代交通中不可缺少的组成部分，我国桥梁工程无论在建设规模上，还是在科技水平上，均已跻身世界先进行列。本设计为S17线金昌至永昌高速公路河东庄大桥（两联4×25m预应力混凝土连续箱梁）下部结构设计，在设计过程中，参考了诸如桥梁工程、土力学、桥涵水文、材料力学、专业英语等相关书籍和文献，根据《公路桥涵设计手册》系列丛书，依照交通部颁发的有关公路桥涵设计规范（JTG系列）拟定设计而成。设计中考虑了各种尺寸与材料的选用符合规范中对强度、应力、局部承压强度的要求，并且产生在规范容许范围内的变形，使桥梁在正常使用的情况下能够达到安全，稳定和耐久的标准。在可预期偶然荷载下仍能达到基本正常使用的标准。设计时还充分考虑河东庄大桥所处区域的地质和水文条件，既保证符合规范要求，同时保证因地制宜并且便于施工和维护，并且兼顾桥梁本身的美观性与社会经济性，既要设计合理，又要起到良好的社会经济效益。关键词：河东庄大桥下部结构桥墩桥台美观性经济性兰州交通大学毕业设计（论文）IIAbstractWiththedevelopmentandprogressofoursocietyandpeople'srisinglivingstandards,transportationconvenienceandsafetytogetthewideattentionofpeople,thebridgeisalsoanindispensablepartofmoderntransportation,bridgeworksinChinaintermsofconstructionscale,orinthelevelofscienceandtechnology,havebeenamongtheadvancedranksintheworld.ThedesignfortheS17lineofJinchangtoYongchangExpresswayEastVillageBridge(double4×25mprestressedconcretecontinuousboxgirder)substructuredesign,duringthedesignprocess,thereferencesuchasbridgeengineering,soilmechanics,materialmechanics,hydrologyofbridgeandculvert,Englishandotherrelatedbooksandliterature,accordingtothemanualdesignofhighwaybridgesandculvertsseries,inaccordancewiththeMinistryofCommunicationsissuedbytherelevantdesignspecificationsforhighwaybridgesandculverts(JTGSeries)protocolisdesigned.Designconsiderationofseniorhighschoolentranceexaminationofvarioussizesandmaterialselectioninconformitywiththespecificationsofstrength,stress,localbearingstrengthrequirements,andproducedinstandardallowabledeformationofthebridgeinthenormaluse,canachievethesafety,stabilityanddurabilityofthestandard.Intheexpectedaccidentalloadscanstillachievethebasicnormalusestandard.ThedesignalsofullyconsidertheHedongVillageBridgewhereregionalgeologicalandhydrologicalconditions,bothtoensurecompliancewithspecifications,whileensuringthatthesuitone'smeasurestolocalconditionsandeasyconstructionandmaintenance,andtakeintoaccountthebridgeitselfappearanceandsocialeconomyshouldnotonlyreasonabledesign,butalsohasgoodsocialandeconomicbenefits.Keywords:HedongzhuangbridgeSubstructurepierabutmentbeautyeconomy兰州交通大学毕业设计（论文）I目录第一章绪论........................................................................................................................................3第二章设计资料及方案比选............................................................................................................4第一节设计资料........................................................................................................................41技术设计标准..................................................................................................................42主要设计依据..................................................................................................................43工程地质资料..................................................................................................................4第二节墩台比选........................................................................................................................41桥墩比选..........................................................................................................................42比选结果..........................................................................................................................53桥台比选..........................................................................................................................54比选结果..........................................................................................................................5第三章桥墩设计计算........................................................................................................................6第一节桥墩材料及尺寸............................................................................................................61材料..................................................................................................................................62桥墩尺寸..........................................................................................................................6第二节盖梁计算........................................................................................................................61荷载计算..........................................................................................................................62可变荷载计算..................................................................................................................84内力计算........................................................................................................................125截面配筋设计与承载力核算........................................................................................15第三节桥墩墩柱计算..............................................................................................................171恒载计算:.......................................................................................................................172汽车荷载计算..........................................................................................................