大跨度连续梁桥转体施工力学特性分析

《大跨度连续梁桥转体施工力学特性分析》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、大跨度连续梁桥转体施工力学特性分析AbstractInrecentyears，withthecontinuousgrowthofthenationaleconomyandtheincreasingofourinvestmentininfrastructureconstructionfield．ourcountry’Shigh—speedrailwayenterpriseisdevelopingrapidly．Sometimes，thesenewlinesunderconstructionneedacrosstheexist

2、ingbusylines．Atthistime，ifweadopttheroutineconstructionmethod，ItwillinevitablydisturbthetrafficorderSOthatthevehiclescannotpassfreely，andhashighrateofrisk．Inthiscase，whenthebridgeacrosstheexistingbusylines，theRotationconstructionmethodmakestheprojectquickandconstr

3、uctionsafeensuredexistingtransportationlineopen，playitsuniquerole，producedeconomyandsocialbeneficialresult，SOthattheRotationconstructionmethodhaveapplicationadvantagesandbrightfutureThisarticleconcerningonthelong—spancontinuousbeamRotationConstruction。discussingan

4、dresearchingabouttheMechaniccalproblemsaboutPanjinLong．span(80+128+80)ContinuousbeaminthePanjinYingkouSpecialPassengerRailway．Themainachievementsareobtainedasfollows：Firstly，accordingtothePanjinBridgecharacteristicandconstructionsequence，thisarticleanalysesthecons

5、tructionprocessbythefiniteelementsimulationcalculation．Keepthecontinuousbeam1inearunderthepreciseandreliablecontrol，thebeamrotationsuccessfullyandclosureprecisely，Bridgelinearwithintherangeofthepermissionofdesign．ThisresultdemonstratesthattheconstructionContr01iSa

6、ccurateandeffective．Secondly，ThearticleintroducestheAnalysismethodofunbalancedforceinBridgeconstructionadoptingrotaryconstructionmethod，Foranexample，takePanjinBridge，introducesthespherichingerotarymovementmethod、thestressestimatemethod，givescalculationmethodofunba

7、lancemoment，eccentricity，resistancemomentandfrictionfactors，concludedtheadvantagesanddisadvantagesofdifferentmethods，thespherichingerotarymovementmethodobtainmorereliablemechanicalparameters．Thesandbox—stressestimatemethodandtheunderspherichinge—stressestimatemeth

8、odcanquicklydeterminetheunbalancemomentoftherotating--bodyinanearlyphaseandinitiallydeterminingcounterweights．ThesemethodsCanbeusedinunbalancemomenttest