重庆东水门长江大桥索塔锚固区非线性接触受力分析

2010105TechnologyofHighwayandTransportOct.2010No.521、[1-3]2[4]。2。。、。。。[5]12111.4000672.400074、。MidasFEA、、。1009-6477(2010)05-0036-06U448.27AAnalysisofNonlinearContactForceinAnchorageZoneofCableToweronChongqingDongshuimenYangtzeRiverBridgeGENGBo1,CHENGYupeng2,LIJun1,WangFenghua1Abstract:AnovelstructureisadoptedinanchoragezoneofcabletoweronChongqingDongshuimenYangtzeRiverBridge,theendplatesinanchoragezoneofcommonexternalsteelanchorboxcabletowerarecancelled,andthesteelanchorboxesareconnectedwithconcretetowerlimbsbymeansofshearstuds,inthemeantimetheprestressamongtowerlimbsisarranged,enablingcloseconnectionbetweenthesteelanchorboxesandconcrete,andtheshearstuds,sidepullingplatesandfrictionforceareusedtobeartheforceofstayedcables.Aimingatthisnovelstructure,thispaperestablishesanonlinearcontactmodelforanchoragezoneofcabletowervialarge-scalefiniteelementsoftwareMidasFEA,thestressdistributioninthesteelanchorboxes,sidepullingplates,shearstudsandconcreteontowerwallsareac-quiredaswellastransferanddistributionofcableforcebasedonexquisitesimulationcalculationforthemodel.Keywords:DongshuimenYangtzeRiverBridge;anchoragezoneofcabletower;finiteelement;nonlin-earcontactmodel;simulationanalysis2010-04-251979-.[6-10]。22。。1CBD。222.5m＋445m＋190.5m＝858m。2。1。35.0m7.0m。2。9。21。。。3。22.1246.0m39.0m。93.8m。。。71mcm23201053712Фs15.2mm45cm4、5。、。。60mm80mm50mm30mm。2.2。。。。2。1。。。。2。。。2.3MidasFEA。12332。。16。4mm5mm62010381600t0.3。33.17～10。2。7～102MISES227.5MPa。。3.211。MISES83.5MPa43.1MPa60.0MPa95.5MPa。。3.312、13。124.8MPa246.5MPa。105kN。81.1MPa128.3MPa。3.44.3MPa14。16.2MPa14.61/MPaC503.45×1040.167Q345qD2.1×1050.31.95×1050.32.1×1050.38MISES9MISES10MISES7MISES2MISES////MPaMPaMPaMPa227.5189.3-254.8118.2227.5189.3-254.8118.2176.7124.1-191.887.4160.058.3-171.073.111MISES20105394/kN/%262132.5545367.580741003/kN/%-110-1.6197028.5505373.16913100MPa10.1MPa4.0MPa。3.53、4。3。1970kN28.5%5053kN73.1%。110kN。4。2621kN32.5％5453kN67.5％。41MISES227.5MPa。。2MISES83.5MPa。。3124.8MPa246.5MPa105kN。44.3MPa16.2MPa。ftd＝1.83MPaftd。5。28.5%73.1%32.5％67.5％。[1].[R].:2006.[2].[C]//2004.2004.[3].[R].121314201040。B2874～5。3E50m1～2d。1～2d250t4～5m[8]。6.2.2C。。D1、。E、。3。730m＋50m＋30mD。、、“、、”。[1].1、2、3[Z].2009.[2].[Z].2009.[3].[Z].2009.[4].[Z].2007.[5].—CQ5—1[Z].2000.[6].GB50014—2006[S].2006.[7].JTJ041—2000[S].2000.[8].JTJ025—86[S].1986.352008.[4].[R].2003.[5].-[J].20081225)153-161.[6]LainDEllobodyE.Behaviorofheadedstudshearconnectorsincompositebeam[J].JournalofStructuralEngineeringASCE2005131196.[7].[J].199921168-72.[8]ShimCSLeePGYoonTY.Staticbehavioroflargestudshearconnectors[J].EngineeringStructures2004261853.[9].[J].2008736916-92941.[10].[C]//2006.2006.20105!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!41