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,,1964,,,,,,,,1(2001)12080,,20017005712km,4766182km14575112tkm,3613%(1)5416%(2)()(19962000)5,,2(2001),,2211,1937415km6555513tkm,1616%919%,3419991,200010971451RAILWAYCONSTRUCTIONTECHNOLOGY2002(5)53()4()5(19962000)212,55600km,4270km,4300km2000,6864916km,56213,19971998200031(2001)10,4,13000km,140160km/h,200km/h,,,,476(19492001)214,,,,,(TMIS),;(DMIS)(OMIS);,1700,700,,,215,,,2RAILWAYCONSTRUCTIONTECHNOLOGY2002(5)7410,380,323,3,:(1),,,,,,,,,,WTO,,20012005,712%319%,2005210165t,89,82005,,,,,,3RAILWAYCONSTRUCTIONTECHNOLOGY2002(5)9200510(2)WTO,,WTO,,,,,,,WTO5,,,,4,,:,,,,:(1),,,,,10112005,75000km(4RAILWAYCONSTRUCTIONTECHNOLOGY2002(5)112000km),25000km,20000km,,,,,,,,,,,,,;,(2),,,,,,,20014,20032005,12,,,16000km,500km,12001500km,20002500km,,,,,;,;,,(3),:,2005,,5RAILWAYCONSTRUCTIONTECHNOLOGY2002(5)12,(4),,,,,,,,,20;2015,(5),,,,,,20023,,,,,,,5,,,2000,3500,2700(2550),800,,,,,,(20023)6RAILWAYCONSTRUCTIONTECHNOLOGY2002(5)RAILWAYCONSTRUCTIONTECHNOLOGYNo.5,2002AbstractsandKeywordsDiscussionsonsomestrategicissuesinChineserailwaydevelop2mentWangLinshuAbstractBasedonthecharacteristicsofthedevelopmentofChinaeconomyandtransportation,thispaperanalyzesthesituationthatChi2narailwayisfacing.FromtheviewpointofSystemreformationandtechnicalservices,thepaperdiscussesthemeasuresandtheireffectsthatrailwaydepartmenthaveappliedtoenhancethecompetitionofrailwayenterprises,andadvancesstrategiesthatrailwaywoundadoptduringTenFiveperiodinordertorealizebetterconstructionofrail2waynetworks,improvetherailwayservicequality,speedupthein2formationsystemconstructionandprompttheapplicationoftechnicalinnovationsandoperationalreformation.KeywordsRailwaytransport,developmentstrategy,systemrefor2mation,operationalmanagementAdifferentialmethodforcriticalpressureofconstantsectioncatenaryarchwithtwohingesDuJiajunAbstractThispapercreatestheplanebucklingbalancedifferentialequationofcatenaryarchwithtwohingedendsaccordingtothede2flectionmethod,andgetsthecriticalpressureformulawithdifferencemethod.Atableofcriticalpressurefactoraboutvariousarchaxisfactorandratioofriseandspanisgiven.KeywordsCatenaryarch,planebuckling,Criticalpressure,Dif2ferencesolutionMethodstatementforviaductsegmenterectionusinggirdertypeinwestrailwayofHingKongChuHoucaiAbstractTheviaductbeaminthesuperstructurecantbeprecastedwhollyduetothenarrowsiteintheContractCC213ofKCRCWestRail.CombinedsegmentserectedusinggirdertypetosettlethisproblemwillbedetailedinthepaperKeywordsViaduct,segment,girdertype,constructionTheconstructionmethodandtechniquemeasureofpylonforWuHuChangjiangRiverNongDaipeiAbstractWuhuChangjiangRiverBridgeisthefirstlongspanrail2cum2roadcable2stagedbridge.Thestructureofitspyloniscomplicat2edanditsconstructionrequires,shorttimeandhightechnique.Be2causeofapplicationofnewtechniqueandmethodduringconstruction,timeissaved,Fianlly,pyloniscompletedtimely.Keywordsrail2cum2roadcablestagedbridge,pylon,constructionmeasuresElastoplasticdesigntheoryofbolt2sprayingsupportinganditsen2gineeringapplicationWuBo,GaoBo,GuanBaoshuAbstractBasedonelastic2plastictheoreticalanalysis,bycombiningwithitsmechanicsmechanism,thispaperdiscussedthequalitativeandquantitativedesignmethodofbolt2sprayingsupportingandthemethodisapplicedtoXiQidongShupipetunnels.Itisbeingprovedbyrealengineering,themethodintroducedinthepaperisreasonableandgivesimportantreferencetosimilarengineering.Keywordstunnel,bolt2sprayingsupporting,elastoplastic,designConstructiontechniqueoftwoarchtunnelswithmiddledi2aphragminmountainousRegionZengShufei,FuChaoAbstractThispapersumsuptheconstructiontechnologyofNo.3LaochangpotunnelintheMountainousregionanddescribesthemainconstructionproceduresofthemultiplearchtunnelandputsforwardsomesuggestionsandproposalsusedforreference.Keywordstunnel,middlediaphragm,constructionComputationoftieparameterofnormalconductingmediumorlowspeedmagmeticsuspensionrailwayYinLiming,LuoKunAbstractThebogieofnormalconductingmagneticsuspensiontrainwrapsaroundtherail,therefore,tiesmustbemonolithicallyshifted.Computationformulasforkeyparametersintiedesignaregiventhroughtheoreticalanalysisandderivation.Keywordsmagneticsuspensiontrain,trackway,tieQinghai2TibetRailwayconstructionandpermafrostenvironmentDaZhihua,RenWeilaiAbstractBasedoninvestigationandanalysisonpermafrostenviron2mentduringconstructionofQinghai2TibetRailwayandcombinedwiththespecificdesignandconstructionrequirementsofbeingconstructedQinghai2TibetRailwayatthepresent.ThepaperanalyzestheeffectofQinghai2TibetRailwayconstructiononpermafrostenvironment.KeywordsQinghai2Tibetrailway,permafrost,environment