不對(duì)稱邊跨連續(xù)梁橋特性研究.pdf

1、東南大學(xué)碩士學(xué)位論文不對(duì)稱邊跨連續(xù)梁橋特性研究姓名：郭憶申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：葉見曙20030301AbstractThispaperisbasedonthetwoengineeringpracticesofasym_metriccontinuousgirderbridge(separatedintoAandBtypes)Basedontheirloadtests，thesimplifiedmethodtoca

2、lculatetheeccentricloadcoefficientisresearchedTheirbehaviorsofinteriorforce，deformation，andsupportingforceunderdeadload1iveloadandloadcombinationarealsodiscussedThentheeffectsoftemperaturestress，supportingsubsidingandsid

3、espanratioonthemareanalyzedAccordingtotheirdynamictests，theirmodesarecalculatedbyaspacefiniteelementprogramAtlast，thereasonofthecrackonthebottomdeckoftheA—typeasymmetriccontinuousbridgeisanalyzedTheresultshowsthatrevised

4、eccentricmethodismoreaccordedwithpracticaldatumAtypeasymmetriccontinuousbeamgreatlyaffectstheinteriorforces，deformation，andsupportingforcesofsymmetrystructnreHoweverB—typedoesn’taffectthoseTemperaturestressaffectstheinte

5、riorforceofcontinuousbeammoredistinctandgreaterthaninteriorforceunderliveloadTheinteriorforceofsupportingsubsideisfaintnessWhensidespanratioofonesideofB—typecontinuousbeamischangedfrom05toO77，onlythemomentofthisspanandit

6、sadjacentspanaswellasthesupportingforcesofthisspanarechangedThemodeofBtypeandthefirstmodeofAtypecontinuousbeamarenotinfluencedmuchbytheasymmetricsidespanbutthelattermodalofA—typebeamisaffectedmuchKeywordAsymmetryContinuo