CEM_Time-Cost-Quality Trade-Off Analysis for Highway Construction

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1、Time-Cost-QualityTrade-OffAnalysisforHighwayConstruction12KhaledEl-Rayes,M.ASCE,andAmrKandil,A.M.ASCEAbstract:Manydepartmentsoftransportationhaverecentlystartedtoutilizeinnovativecontractingmethodsthatprovidenewincentivesforimprovingconstructionquality.Theseemergingcontractsplaceanincrea

2、singpressureondecisionmakersintheconstructionindustrytosearchforanoptimalresourceutilizationplanthatminimizesconstructioncostandtimewhilemaximizingitsquality.Thispaperpresentsamultiobjectiveoptimizationmodelthatsupportsdecisionmakersinperformingthischallengingtask.Themodelisdesignedtotra

3、nsformthetraditionaltwo-dimensionaltime-costtradeoffanalysistoanadvancedthree-dimensionaltime-cost-qualitytrade-offanaly-sis.Themodelisdevelopedasamultiobjectivegeneticalgorithmtoprovidethecapabilityofquantifyingandconsideringqualityinconstructionoptimization.Anapplicationexampleisanalyz

4、edtoillustratetheuseofthemodelanddemonstrateitscapabilitiesingeneratingandvisualizingoptimaltradeoffsamongconstructiontime,cost,andquality.DOI:10.1061/~ASCE!0733-9364~2005!131:4~477!CEDatabasesubjectheadings:Informationtechnology~IT!;Algorithms;Highwayconstruction;Costcontrol;Contracts;C

5、onstructionindustry.Introductionreduceconstructionduration~Jaraiedietal.1995!;~3!nighttimeconstructionthatseekstocutservicedisruptionandprojecttimeExistingnetworksofhighwaysandroadsareaginganddeterio-byrequiringcontractorstoworkduringoff-peaknighttimehoursratingatafastpacethatrequiresimm

6、ediaterehabilitationefforts~EllisandAmos1996;El-RayesandHyari2002,2004!;~4!war-~ASCE2002!.Publicexpenditureshaveincreasedinrecentyearsrantycontractingthatattemptstoimproveconstructionqualitybyinordertorenewandrevitalizetheseagingnetworks.In2000,makingcontractorsliablefortheperformanceoft

7、hefacilityaftertotalexpendituresonhighwaycapitaloutlayandmaintenanceprojectcompletion~AndersonandRussell2001;ENR2002!;andprojectsreachedavolumeof$87billion~FHWA2000!,andthe~5!multiparametercontractsthatprovideincentivestocontractorsFederalHighwayAdministrationestimatestha