Page 168 - 《水资源与水工程学报》2022年第1期
P. 168

!33 " ! 1 #                       & ' ( ) & * + , -                               Vol.33No.1
               2022 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2022

            DOI:10.11705/j.issn.1672-643X.2022.01.23


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                             Deformationpredictionmodelforwaterconservancy
                                       projectsbasedonARMA-GMDH

                                                                   3
                                                   3
                                 1,2
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                         LILizhen ,ZENGZhiquan,HUANGYong,YANGJie ,SONGJintao                   1,2
                       (1.SchoolofWaterResourcesandHydropower,Xi’anUniversityofTechnology,Xi’an710048,China;
                        2.StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’an710048,China;
                              3.PowerChinaHuadongEngineeringCorporationLimited,Hangzhou311122,China)
               Abstract:Deformationmonitoringdataisanimportantbasisforthequantitativeevaluationofstructural
               safetyofwaterconservancyprojects.Thedeformationdataofwaterconservancyprojectsisatypeoftypical
               nonstationarysignal ,whichcontainsbothlinearandnonlinearcomponents.Accordingtothecharacteristics
               ofthesecomponents,acombinedanalysismodelbasedonautoregressivemovingaverageandgroupmethod
               ofdatadandling(ARMA-GMDH)isconstructedtopredictthedeformationofhydraulicengineeringbyu
               singtheautoregressivemovingaveragemodelforlinearsignalandthedatagroupingmethodfornonlinear
               signal.Theengineeringexampleshowsthattheproposedmethodcaneffectivelypredictthelinearandnon
               linearcomponentsofthedeformationofwaterconservancyprojects.Comparedwiththeresultsofseveral
               predictionmethods ,itisfoundthattheproposedcombinedmodelhashigherpredictionaccuracyandpres
               entssimilardeformationtrendwiththemeasureddata.So,itisapplicabletotheanalysisofboththelinear
               andnonlinearcomponentsofthedeformationandinturnevaluatethedeformationtrendandsafetystatusof
               thehydraulicstructure.Therefore ,theproposedmodelhasacertainengineeringapplicationvalue.
               Keywords:deformationofwaterconservancyproject;monitoringmodel;predictionanalysis;groupmeth
               odofdatadandling(GMDH);autoregressivemovingaverage(ARMA)
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