C215TheStudyofconstructioncost/benefitoncementconcretesteamcuringefficiencyCaseexample-TaiwanhighspeedrailwaybidC215viaductconstructionmethodJyh-DongLinChien-HsienWu(935)9C215;923320069404121.2.3.C215-I-250硏(C215Viaduct2)C215-II-ABSTRACTKeywordsQualityManagementSteamCuringMultipleregressionanalysiValueengineeringDuetohighgrowthofnationaleconomyandaccelerationofpublicconstruction,numbersofnewengineeringtechnologyandparticularknow-howonhighlymachineryandsystematicconstructionskillareintroducedaccordingly;however,thisnewtechnologyleadstodifficultyondesignaswellasconstruction.Basically,fromtraditionalfromnewcivilengineering,theconstructionalskillshavedevelopedwithhighautomaticones;therefore,it’sindeedessentialthemeonhowtosolveconstructionproblemandcost,andtoshortenconstructiveperiod.Dedicatedintheautomationdevelopmentfortherecent10years,AsfortheengineeringprojectofTaiwanHighSpeedRailwaywhichisprivateinvestedandcurrentlyunderfullscaleconstruction,itincludesalsomorethan250kilometeroverpassbridgestructure.Takingintoconsiderationsonconstructionperiod,costandquality,factorsonhowtheprivateinvestingcontractormayachievefastconstruction,easyqualitycontrol,feasiblemassproductionandnothinderinggroundtrafficetc.,applicationofoverpassbridgewillinevitablymorepopularinthefutureconstructionprojects.Howtofullyutilizeexistingtechnologies,experiencesandresourcestomoreeffectivelyaccomplishthegoalofshorteningrealizationperiodofconstructionautomation,thatwouldbeagiantstepawaitingtobetakenthroughtheconcertedeffortsmadejointlybytheengineeringindustriestoachievetheultimateobjective.Thisresearchprojectshallbecommencedfromtheaspectofqualitymanagement,withindepthexplorationtobemadeagainsttheexecutionphaseoftheconstruction.Sincemostofthepreviouscaseswerecategorizedasunder-constructionstages,relatedsystemsandmatchingprocedureshavenotC215-III-yetbeenestablished;alsoinpreviousstudiesregardingconstructionqualitymanagement,mostofthemainfocusesfallontheinvestigationofsupervisorystrategicstructureoverthegeneraldirectionandprincipleforconstructionqualitymanagementplansmadebycompanieswithspecialprivilege,therearescarcelyindepthexplorationtargetingattheoperationsrelatedtoqualitymanagementofconstructionprojectatitsbuilding-upphase,thereforethesubjectstudyshallfocusonthistoconductrelatedresearchandanalysiasindicatedaccordingtorelateddocumentsandanalysisresults,shorteningconstructionperiodthroughconstructionautomationcanbeachievedonlywhentheconstructioncyclecouldbeeffectivelycompressed,ofwhichtheconcretemaintenancescheduleistheonewiththemostspace.Throughconstructionmethodologycasestudyregardingsteamcuringqualityandconstructionefficiency(BridgeconstructionmethodappliedtoHighSpeedRailway,bidC215ViaductSection2)alongwithresearchthroughsummarizationofrelevantdocumentationaswellasapplicationofcorrelationandmultipleregressionanalysis,itisexpectedthatthevalueengineeringofoptimalsteamcuringschedulemodelcanbeobtainedtoachieveeconomicalbenefits,andthenmoreeffectivelyutilizeonspotcuringefficiencywithoutdeterioratingtheconstructionquality.C215-IV-..................................................................................................................I...............................................................................................................IV..............................................................................................................VII...............................................................................................................IX...........................................................................................................XI..............................................................................................11-1............................................................................................11-2............................................................................................21-3............................................................................................21-4............................................................................................3......................................................................................52-1............................................................................................52-1-1.............................................................................52-1-2.............................................................................62-1-3.............................................................................82-2...............................................92-3.....................132-4.............................................................152-4-1...........................................152-4-2...................................................18C215-V-2-5.....................................222-5-1...............................................................................222-5-2...........................................................................232-5-3.......