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1、西南交通大學碩士學位論文帶翼小箱梁橋荷載橫向分布計算分析及其試驗研究姓名:李淑芬申請學位級別:碩士專業(yè):橋梁與隧道工程指導教師:錢永久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.a(chǎn)ndcombinedⅥithorganicglassmodelexperimentandbridgeloadtest.fomadoutthelawoftransverseloaddistributionofthistypebridge.Thenthesuitablemetho
6、dforcalculatingthetransverseloaddistributionofmulti-boxgirderbridgeandsomeadviceweregiven.4.Parametersinfluencingtransverseloaddistributionofmulti-boxgirderbridgewerediscussed,andthemaininfluencingparameterswerepickedup.Alsosomeadviceandsimplificationweregiven.Keywords:Mul
7、ti-boxGirderBridge;TransverseLoadDistribution;FiniteElement;Experiment/Test耍壺鑾道盔蘭巫圭至耋生差堡壘塞蘭!要第1章緒論1.1帶翼小箱梁橋的產(chǎn)生和發(fā)展當前,國內(nèi)高速公路建設發(fā)展迅速。國務院在2004年審議通過了國家高速公路布局方案“7918”網(wǎng)的布局方案,即采用放射線和縱橫網(wǎng)格相結(jié)合的形式,包括7條北京放射線、9條縱向路線和18條橫向路線組成,總規(guī)模約8.5萬公里,其中主線6.8萬公里,地區(qū)環(huán)線、聯(lián)絡線等其它路線約1.7萬公里“3??梢姡谖磥淼膸啄曛?,我國的高等級
8、公路還要繼續(xù)高速發(fā)展。中小跨徑橋梁在路網(wǎng)建設中有著十分廣泛的應用。近年來,隨著世界各國技術(shù)、經(jīng)濟以及交通建設的發(fā)展,出現(xiàn)了大批長橋,如高架道路、跨越海灣和湖泊的橋梁等,有的橋梁總