鋼—混組合結(jié)構(gòu)在鋼桁架橋中的加固應(yīng)用研究.pdf

1、917S11分炎號：衛(wèi)型L女堂長安大學(xué)碩士學(xué)位論文鋼混組合結(jié)構(gòu)在鋼桁架橋中的加固應(yīng)用研究周自趨指導(dǎo)教帥姓名————盤堡立』——生蔓立—』型生———一申請學(xué)位級別——巫』_學(xué)科名稱—』墜鰱量墮墮蘭墨論文提交日期—上盟亟L論文答辯日期—量四生生L￡且jQ且學(xué)位授予單位——————jt』塞—土—生———————一答辯委員會主席：胡土琳赦授學(xué)位論文評閱人：堂盎董塾塑絲查苧煎壘垂薊塾塑AbstractInlastcentury50s，ourcou

2、ntryhavebuiltmanysteeltrussbridgesandmostofthemhavestillbeenusedButtheyallneedtostrengtheninginordertoimprovetheirload—carryingabilitytofitthemodemcommunicationItisacoretopicwhichmanyengineerswanttosolveitAccordingtothef

3、eatureofthem，thepaperthinkcanusesteel—concretecompositestructuretostrengthensteeltressbridgesSo，theauthorhaddonethefollowings：Thepapergeneralizethetwomethodofdesignsteelconcretebeam，includingtwoways：oneiselastictheorythe

4、otherisplastictheoryandalsocomparethetwofromprinciple，scopeofuse，analyticalmethodTheformerfittocalculatethestructures’regularserviceabsolutestate，andthenextCarlusedincalculatinglimitbearingcapacityThepaperdiscussessheark

5、ey’sspecies，testofbeatingcapacityandelastictheoryandplastictheoryItshowsthatthereisnotdifferenceinshearkey’sdistributewhenthekey’snumbersisequalityForsteelconcretecompositecontinuousbeam，thesectionatfulcrumisinfirmnessTh

6、ispapermakeemphasisonthatwemustignoretheconcreteboardwhenyoucalculatethebeam’sstiffnessatthe015lscopeAtlast，thethesisdescribesWubaoHuanghesteeltrussbridge’sloadingtestandstrengtheningprogramTheauthoranalyzedtheeffectafte

7、rstrengtheningthroughtheMadis／civilfiniteelementprogramWeknowthemainmemberbar’sforce，thesection’sbiggestdeflectionandamplitudeofvibrmionwilldecreaseafterstrengtheningbyanalyzing(themaximumdeflectioncanbe45％、Thesecanproof