欢迎来到天天文库
浏览记录
ID:36570209
大小:4.19 MB
页数:65页
时间:2019-05-12
《高墩大跨连续刚构桥几何非线性分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、西南交通大学硕士学位论文高墩大跨连续刚构桥几何非线性分析姓名:张勇申请学位级别:硕士专业:桥梁与隧道工程指导教师:赵人达20080401西南交通大学硕士研究生学位论文Abstract第1I页Intherecentyears,long—spanbridgewithhigh·pierhasbeengrowinguprapidlywiththedevelopmentoftransportationenterprise.Longspancontinuousrigidframebridgewiththin-walledhighpiers’iscommonlybuiltinCh
2、ina,owningtotheiradvantagesoneconomyandconstruction.However,thestabilityproblemofthebridge,especiallyinthestageofcantileverconstructioniSmoreremarkable.Thenonlinearbehaviorofbridgebecomesmoreandmoreimportantwiththeincreaseofitsspanandpierheight.Thisthesisillustratesthegeometricalnonlin
3、eartheoryofbarssystem,introducesthespatialdescriptionmethodsofstructuralshapesofgeometricalnonlinearbehaviorandemphasizesthediscriminationbetweenTotalLagrangianFormulationandUpdatedLagrangianFormulationinLagrangianFormulation.BasedonLabajinBridge,thisthesisfocusesonthenonlinearofcontin
4、uousrigidframebridgewithhighPiersduringtheconstructionofcantilever,byuseoffiniteelementprogramMidas/Civil.ThecalculationindicatesthatgeometricalnonlineareffectaffectsobviouslytoY—directiondisplacementofthebridge,throughstraight、curvedandsinglelane、doublelanesofthecomparison.Inthestraig
5、htbridgeandthecurvedbridgestructure西南交通大学硕士研究生学位论文第111页---●_●●_●_●●●●—__—●●_●_-●-●_●●-●●-____●●●___●__●__●●_-●●●-_●_●_II——_m__●●_●-thereisverybigdifferenceinthedisplacementdistortionandthestructurestress.ThestraightbridgedoesnothavethelateraldisplacementandtheZdirectionbendingmoments.b
6、utthecurvedbridgecanhavethelateraldisplacementandZdirectionbendingmomentS.Thereisverybigdifferencebetweenthelinearandnonlinearanalysisresults,whichshowsthatthehigh—pierandlong—spanbridgeisverynecessarytoconsidergeometricalnonlinearanalysis.Keywords:high—pier:long—spancontinuousrigidfra
7、mebridge;geometricalnonlinear西南交通大学学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使用学位论文的规定,同意学校保留并向国家有关部门或机构送交论文的复印件和电子版,允许论文被查阅和借阅。本人授权西南交通大学可以将本学术论文编入有关数据库进行检索,可以采用影印、缩印或扫描等复制手段保存和汇编本学位论文。本学位论文属于1.保密口,在年解密后适用本授权书;2.不保密囹,适用本授权书。学位论文作者签名:彩蚕日期川,/./⋯燧名:趣穆日期涨.“西南交通大学学位论文创新性声明本人郑重声明:所呈交的学位论文,是在导师指导下独立进行研
此文档下载收益归作者所有