桥梁工程毕业设计钢筋混凝土箱形拱桥

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1、摘要角洞水库大桥为广(州)惠(州)高速公路小金口至凌坑段的重要桥梁�跨越惠州市角洞水库区�桥址位于角洞水库两岸两个突出的山嘴之间。桥址区域属丘陵地貌、地势起伏、木林茂盛、植被良好。根据基本设计资料�初步拟定了连续梁桥、连续刚构桥和拱桥三个方案。经综合比较�最终选择拱桥为设计方案。全桥由一跨跨越水库的拱桥及两端引桥组成�拱桥的净跨径为120m�矢跨比为1/7。主拱圈截面采用箱形截面�拱上建筑为全空腹式�腹孔墩为钢筋混凝土柱式墩�腹孔及引桥上部结构均采用标准跨径13m的预制空心板�墩、台均采用桩基础。主拱采用悬链线作为拱轴线�运用“五点重合法”确定拱轴系数。根据确定的拱轴系数查阅公路桥涵设计手

2、册—拱桥(上册)相关表格计算主拱各截面内力�完成主拱验算。下部结构�桩基础采用m法计算桩基内力与位移�计算截面配筋�确定单桩容许承载力�验算地基承载力。经验算�各项指标均满足设计要求。关键词�拱桥拱轴系数矢跨比桩基础毕业设计计算书AbstractJiaoDongreservoirBridgeisaimportantbridgeofXiaojinkoutoLingkengofGuangHuihighway,whichacrossingthereservoirofHuiZhouCity.Thebridgeislocatedbetweentowprotrudinggaps.Bridgesiteb

3、elongtohillyground,andthesurfacereliefisfluctuate,forestsisthick,vegetationisfine.Basedonthedesigndata,drawingupthreeprojectswhicharecontinuousbeambridge,continuousrigid-framebridge,andarchbridge.Comeparedwiththeprojectsoverall,andthenchoosedtheprojectofarchbridge.Thebridgeisconsistedofarchbrigdet

4、hatacrossedthereservoirbyasingle-spanandtheapproachbridge.Thelengthofthearchbridge’sclearspanis120miters,andrise-spanratioisfirstseven.Themainarchringsectionisboxsection,spandrelstructureadopttoopenspandrelpiercolumnwhicharemadeofreinforcedconcrete,approachbridgemainbeamadopttoprecastcellularstabb

5、ridgethatstandardspanis13miters,pierandabutmentusedtopilefoundation.Thearchaxisofmainarchiscatenarianline,thendeterminethearchaxiscoefficlentbythemethodoffivepoints-comebine.BasedonthearchaxiscoefficlentreferedtocorrespondingformswhichintheDesignHandbookofHighwayBridgeandCulverts,calculatingsectio

6、nalstressofmainarchring,thenfinishedtheverifyofarchbridge.Calculatingthepileshaftinternalforceanddisplancementsbythemethodof―m‖.Arrangedthereinforcementsforthepiles,determinedthepilebearingcapacity,checkedbearingcapacityoffoundationsoil.Theseindexesareconformtodesigncodebycalculatingfinally.Keywor

7、ds:archbridgearchaxiscoefficlentrise-spanratiopilefoundationⅡ毕业设计计算书目录第一章桥型方案比选........................................................................................................11.1设计桥型的确定..................