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1、浅谈悬臂浇筑施工法()Abstract:sincethecast—in—placeconstructionmethodappearedin60s,theprestressedconcretebridgehasbeendevelopingtolargespan.Asthekeyequipmentoftheconstruction,thehangingbasketcantileverconstructionhasbeencontinuouslydeveloping,laidthefoundationforshorteningthecantilevercycle,improv
2、eeconomicefficiency,goodconstruction,hasbeenincreasinglyusedinmodernbridgeconstruction.Keywords:cantilevercastingGeneralsituationoftheproject:theBeichuanRiverBridgeislocatedinthenorthofXiningcity・ItspanstheBeichuanriver.Themainspanofthebridgeisathreespanvariablecross-sectionprestressedco
3、ncretecontinuousgirderbridgewith35+60+35span.Thecrosssectionisasingleboxandasingleroom・Thethreedirectionprestressingforceisadoptedaccordingtotheforcecondition.Themainbridgeoftherhombichangingbasketconstruction,withpierNo.21,No.22piertwoTstructure,Tisdividedinto8singleblockconstruction,ca
4、ntileverlength27.5m,maximumcantileverlengthis4m,themaximumweightof95tons,asingleTpouringthemaximumunbalaneedforcecontrolinlessthan200KN・1cantileverpouringconstructiontechnologyAlsocallednonsupportarmbalancemethodorhangingcantilevermethod(hanging)basketmethod,mainequipmentisusedthehanging
5、basket・Byplacingthefrontofthehangingbasket,theconcreteissymmetricallypouredintothemiddlesectionofthetwosides,andtheprestressingforceisapplied,sothattheoperationisperformedinsuchaway.Theconstructionprocessofthehangingbasketinplace:forward,leveling,template(steelproduction)installed,instal
6、ledinthebottomplateandwebsteelmould,lashingtopsteel,installationofprestressedpipe,concretepouring,acceptanceSupervisionEngineer(testblock),concretecuring,removefilmandjointtreatment,prestressedreinforcementmaterial,wearbeamtoprestress,sealinganchor,pressuregrouting,hangingbasketforwardin
7、place・Thecompositionandcharacteristicsof2DiamondhangingbasketThehangingbasketismainlycomposedofthreesystems:maintrussbearingsystem,bottombasketandformworksystem,runningsystem・Thediamondhangingbasketfeatures:simplestructure,definitestress,overallstiffness,safetyandreliabil
