鐵路桁架橋橫梁半剛性連接受力分析.pdf

1、西南交通大學碩士學位論文鐵路桁架橋橫梁半剛性連接受力分析姓名：王波申請學位級別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：強士中20080601西南交通大學碩士學位論文第1l頁●_______●_●●________●_____●_____一ii——————I’●一ABSTRACTConnectioninsteelstructuresiSdividedintigidconnection，semirigidconnectionandidealpi

2、nconnection。Thetraditionalanalysisanddesignofsteeljointsassumesthatthebeam—’columnconnectionsarefullyrigidoridealpinconnection。Infact，allconnectionsofthestructures，inpractice，arebetweentofullyRigidandpinconnectionsandbel

3、ongtosemi—rigidconnection。Inthispaper，bymeansoffiniteelementanalysiS，thegeneral——purposefiniteelementpackage—’ABAQUSwasusedtesearchthemechanicalbehaviorofsimi——rigidconnectioninrailwaytrussbridgejointThecontentofthiSpape

4、rareasfollows：1Introducethecharacterandclassificationofsemi—rigidconnections：2Thefiniteelementmodelofsemi—rigidjointofrailwaytrussbridgewasestablished：3themechanicalbehavior，stressdistributionandstressconcentrationofsimi

5、—rigidconnectionsarestudiedandcompared。4Withthechangeofthicknessofangles，thestressdistributionisinvestigated；5Bythechangeofthepretentionloadsofbolt，themechanicalbehaviorandstressdistributionofsemi—‘rigidconnectionsareres

6、earched、Accordingtothesimulation，thestressdistributionofeverypartsisdiscussedindetail，especiallytheboltsandangleswhicharemoreimportanttothebehaviorofthejointAfterthat，themoment—rotationcurvecanbeobtainedbyfiniteelementca