桥梁工程本科毕业设计——连续刚构桥

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1、二○一五届毕业设计***河连续刚构桥学院：公路学院专业：桥梁工程姓名：学号：指导教师：完成时间：2015.06.14二〇一五年六月毕业设计报告摘要根据设计任务书要求，依据现行公路桥梁设计规范，综合考虑桥位的地质、地形条件，提出了独塔斜拉桥、上承式钢管混凝土拱桥和预应力混凝土连续钢构三个比选方案。按“安全、经济、适用、美观和有利于环保”的桥梁设计原则，分析了三个方案的优缺点。推荐预应力混凝土连续刚构作为设计方案。推荐方案以基本设计理论为基础，参考国内外成功的大跨连续钢构桥，拟定了95m4170m95m的跨径，主梁采用1.8次抛物线变梁高的单箱单室

2、箱主梁，桥墩为双薄壁空心墩，桥台为轻型桥台，基础为群桩基础，施工阶段采取挂篮悬臂现浇法。对推荐方案进行了结构细部尺寸拟定，对上部结构和下部结构进行了内力计算、配筋设计及控制截面强度、应力验算，变形验算等。经分析比较及验算结果表明该桥梁设计合理，符合设计任务的要求。关键词：预应力混凝土连续刚构，钢管混凝土拱桥，斜拉桥，悬臂现浇，应力验算毕业设计报告ABSTRACTAccordingtothedesignrequirements,theexistingdesignspecificationofhighwaybridge,consideringthegeo

3、logyandterrainconditionsofthebridgesite,afterpreliminaryselection,threebridgetypeschemasarepresented,theyarecable-stayedbridge,archbridgeandprestressedconcretecontinuousrigidframebridge.Thencomparingtheadvantagesanddisadvantagesofthreeoptionscomprehensivelybythephilosophyofbrid

4、gedesignas“Security,Economy,Application,BeautyandEnvironmentalProtection”.ThePCcontinuousrigidframebridgeisselectedastherecommendedschemeaftertheselections.Thisprojectisbasedonthebasictheoryofbridgedesignandtakethedomesticandinternationalsuccessfuldesignsforexample,finallychose

5、aspancombinationof95m4170m95m.ThedepthofSinglecellboxgirdervariesasthesecond-degreeparabola,thepierisadoublethin-wallhollowpier,theabutmentislightabutment,thefoundationisgroupedpilesfoundation,andthethehangingbasketcantilevercastingconstructionmethod.Throughdrawingupofstruct

6、ure’sdimensionandthendesigntheupperandlowerpartofthestructure,suchascalculatedtheinternalforceofdeadandlivingload,prestressedsteeldesign,checkingthestrengthandstressofcontrolcross-section.Finally,checkforliveloaddeformation.Checkedbythecomparisonandanalysisshowthatthedesignmeth

7、odofcalculationiscorrect,andthedistributionofreinforcementisReasonable,sothisdesignmeetthedesignrequirements.Keyword:prestressedconcretecontinuousrigidframebridge,doublethin-wallhollowpier,cantilevercastingconstruction毕业设计报告目录第一章概述································11.1地质条件·······

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