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ID:36629718
大小:2.23 MB
页数:81页
时间:2019-05-13
《带翼小箱梁桥荷载横向分布计算分析及其试验研究》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带翼小箱梁桥荷载横向分布计算分析及其试验研究姓名:李淑芬申请学位级别:硕士专业:桥梁与隧道工程指导教师:钱永久20070101AbstractMulti—boxgirderbriageisgreatlyrecommendedandpopularizedbytheministryofcommunicationsofChinaintherecentyears.Basedonthecharacteristicsofthistypestructure,thispaperresearchedthemethodsuitablef
2、orcalculatingthetransverseloaddislributionofthistypebridge.Byfiniteelementanalysis,studiedhowthetransverseloaddistributionvaryalongthespanofthebridge.Alsoparametersinfluencingtransverseloaddistributionwerediscussed,andthemaininfluencingparameterswerepickedup.Meanwhile,twoo
3、rganicglassmodelexperimentalanalysisandoneloadtestonabridgewereperformedtovalidatethefiniteelementmodelandthetransverse10addistributionofthistypebridge.Themainworksinthispaperareasfollows:1.’Summarizedtheemergenceandthedevelopmentofmulti-boxgirderbridge,andsystematicelabor
4、atedthemaincharacteristicsofthistypebridge.Alsothepresentapplicationofmulti-boxgirderbridgeandthepresentresearchworksofitstransverseloaddistributionwereintroduced.Thentheproblemsexistedandthemainworksofthispaperwerepointedout.2.Introducedmethodsforcalculatingtransverseload
5、distribution,andfoundoutthemethodsuitableforcalculatingthetransverseloaddistributionofmulti-boxgirderbridge.3.Byfiniteelementanalysis.andcombinedⅥithorganicglassmodelexperimentandbridgeloadtest.fomadoutthelawoftransverseloaddistributionofthistypebridge.Thenthesuitablemetho
6、dforcalculatingthetransverseloaddistributionofmulti-boxgirderbridgeandsomeadviceweregiven.4.Parametersinfluencingtransverseloaddistributionofmulti-boxgirderbridgewerediscussed,andthemaininfluencingparameterswerepickedup.Alsosomeadviceandsimplificationweregiven.Keywords:Mul
7、ti-boxGirderBridge;TransverseLoadDistribution;FiniteElement;Experiment/Test耍壶銮道盔兰巫圭至耋生差堡垒塞兰!要第1章绪论1.1带翼小箱梁桥的产生和发展当前,国内高速公路建设发展迅速。国务院在2004年审议通过了国家高速公路布局方案“7918”网的布局方案,即采用放射线和纵横网格相结合的形式,包括7条北京放射线、9条纵向路线和18条横向路线组成,总规模约8.5万公里,其中主线6.8万公里,地区环线、联络线等其它路线约1.7万公里“3。可见,在未来的几年中,我国的高等级
8、公路还要继续高速发展。中小跨径桥梁在路网建设中有着十分广泛的应用。近年来,随着世界各国技术、经济以及交通建设的发展,出现了大批长桥,如高架道路、跨越海湾和湖泊的桥梁等,有的桥梁总
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