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                 Optimizationofarchdam shapebasedonparameter - classifiediterationanditsapplication

                                  HEChunhui,ZHANGChong,ZHANGJing,WANGRenkun
                                     (ChengduEngineeringCorporationLimited,Chengdu 610072,China)

                  Abstract:Inordertosimplifytheoptimizationalgorithmandimprovetheefficiencyofthearchdam,andtofurther
                  improvethecomprehensiveperformanceofthearchdam , thispaperfirstlystudiedthedifferentinfluencesof
                  variousshapeparametersofanarchdam onitsstressconditionandvolume ,classifiedthoseintotwocategories,
                  namely,thicknessandcurvatureradius.Thenproposedtheparameter - classifiediterationbasedonthedifferent
                  sensitivitiesofthestressconditionandvolumetothesetwoparameters.Finallyachievedarapidreductioninthe
                  volumeofthedamwhileensuringthatthedamstressesmeetthedesignspecifications.Basedonthearchdamshape
                  obtainedfromthisoptimizationalgorithm,furtheradjustmentscouldbemadeinaccordancewithactualengineering
                  needs ,resultinginafinalshapethatimprovedmultiplefunctionalobjectives.Thisapproachcombiningalgorithm
                  andengineeringexperienceforoptimizingthearchdamshapewassuccessfullyappliedtotheYebatanArchDamon
                                                                               3
                  theJinshaRiver.Itachievedexcellentresults,includingareductionof93,000m inthebasicshapevolumeatthe
                  constructionstagecomparedtothetenderdesignstage,andsimultaneousimprovementsinvariousindicatorssuch
                  asdamstress ,deformation,andadaptability.
                  Keywords:archdam;shapeoptimization;parameterclassifying;iteration;engineeringapplication


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