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1、西南交通大学本科毕业设计（论文）第14页UrbanUndergroundRailroadarchtunnelConstructionTechnologyGroupAbstractProjectinGuangzhouMetroLine,right-archconstructionmethodoftunnelstoexplore.SubwayConstructioninGuangzhouforthefirsttimeputforwardadouble-archtunneltosingle-holetunnelconstructiontechnology,an
2、dasingletypeofwallandsplitinthewallstructure,comparisonandselectionofTechnologysolutionswereobtainedtomeetthestructuralsafety,constructionsafetyandEconomicbenefitsofbetterTechnologysolutionsforthefuturedesignandconstructionofsimilarprojectstoprovidereferenceandreference.Keywords:
3、double-archtunnelgroup;asingletypeofwall;constructionTechnology;splitinthewall.Asthecircuitdesignrequirementssubwaytunnel,thetunnelstructureproducesavarietyofforms,rangingfromcross-sectionfromdouble-archandthethree-archtunnelcomposedofdouble-archtunnelsectioniscommonlyusedintheco
4、nnectionlinesandcrossinglines.Inthispaper,engineeringexamples,accordingtotunnelinwhichgeologicalconditions,durationrequirements,raisedthroughthecomparisonandselectioncanachieverapidconstructionandthepurposeofconstructioncostsavingsofthebestconstructionprograms.1ProjectOverviewGua
5、ngzhouMetroLineRoadstationturn-backlineofsportsforsportsRoadstationafterthereturnline,structurecomplex,DK3016.047~037.157varyingcross-sectionsetthedouble-archstructure,three-archstructureoftunnels.Rangingfromcross-archtunnelexcavationspan20.1m,excavationheightof10.076m,cross-vect
6、orratioof1:0.5,afterliningaholespan5.2m,largeholes,afterliningspan11.4m,thewallthicknessof1.6m.Threedouble-archtunnelexcavationspan19.9m,excavationheightof7.885m,cross-vectorratioof1:0.1.-Archtunnelsectionofrockfromtoptobottomare:artificialfillsoil,red-alluvialsand,alluvial-alluv
7、ialsoil,riverandlakefaciessoil,plastic-likeresidualsoil,hardplastic-ahard-likeresidualsoil,allweatheredrock,strongweatheringrock,theweatheredlayerandthebreezelayer.Tunnelthroughtherockstrataaremorehomogeneous,theintensityhigh,carryingability,goodstability.Thicknessofthetunnelvaul
8、tcovering15.5~18m,ofwhichgradeⅣWairockva
