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1、.•西南交通大学硕士研究生学位论文第13页西南交通大学硕士学位论文寒区隧道冻害预测与对策研究姓名：苏林军申请学位级别：硕士专业：桥梁与隧道工程导教师：仇文革20070601.•西南交通大学硕士研究生学位论文第13页AbstractWiththedevelopmentoftrafficbasalconstructions,lotsofhighwaytunnelsandrailwaytunnelsappeared.TheimplementingnationpolicyofWest-Exploitationmadetunnelengineeringextending
2、tocoldareawherethereislessofpeople,formidablenaturalconditionsofhighlatitudeandaltitude.Comparewithtunnelsincommonarea,theconstructionoftunnelsincoldareawillfacemorecomplicatedtechnicproblems,especiallytheproblemoffreezeinjury.Thestudyonantifreezingoftunnelsincoldareahasimportantpra
3、cticalmeaning,becausetherearealotoftunnelsincoldareainChina.Onthebasisofinvestigatingandanalyzinglotsoffreezeinjuryandallkindsoffrostresistingandantifreezingmeasurementsappliedthroughouttheworld,thispaperstudiedfreezingdamagemechanicsoftunnelsincoldarea,analyzedcausesoffreezingdamag
4、eoftunnelsincoldarea,andgeneralizedthepotentialfrostinjuryoftunnelsincoldarea,putforwardcomprehensivefrostresistingandantifreezingmeasurementssuitabletotunnelsinChinacoldarea.TakingRi'erlangshanTunnelProjectasactualbackground,thethesiscalculatedthetemperaturefield,frostforceandthick
5、nessofinsulationlayerofthetunnel.UsingtheFEMmethodtocalculatethetemperaturefieldforeandafterthetunnelformatted,wegetthemaximumfreezingdepthofthetunnelis1.8m.Introducingtheresultofthetemperaturefieldcalculationtothestressfield,wegetthemaximumfrostforceofthetunnelis1.66MPa;theliningof
6、thetunnelcanbearthetotalactionoftherockloadandfrostforce.Finally,bycalculating,thethicknessofthepolyurethanefoamboardis5cmattheentranceofthetunnel,and4cmattheinnerpartofthetunnel,,Thefrostresistingandantifreezingmeasurementsoftunnelsincoldareamainlyincludetheheatinsulationmethod,the
7、waterproofanddrainingmethod,theheatingmethodandthestructuralprotectingmethod.Inspecific,includingthemaskingdoor,installationoftheinsulationlayer,reinforcingthelining,strengtheningthepropertyofresistingfreeze-thawofthewallrock,heatingthecanal,insulationtheexit,deeplyburyingthedrainag
8、ecaveetc.Keywords:t
