鐵路桁架橋橫梁半剛性連接受力分析.pdf

1、西南交通大學(xué)碩士學(xué)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(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：強(qiáng)士中20080601西南交通大學(xué)碩士學(xué)位論文第1l頁(yè)●_______●_●●________●_____●_____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