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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BCDEF:TV698.1 GHIJK:A GLMF:1672643X(2022)01016407
Deformationpredictionmodelforwaterconservancy
projectsbasedonARMA-GMDH
3
3
1,2
1,2
LILizhen ,ZENGZhiquan,HUANGYong,YANGJie ,SONGJintao 1,2
(1.SchoolofWaterResourcesandHydropower,Xi’anUniversityofTechnology,Xi’an710048,China;
2.StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’an710048,China;
3.PowerChinaHuadongEngineeringCorporationLimited,Hangzhou311122,China)
Abstract:Deformationmonitoringdataisanimportantbasisforthequantitativeevaluationofstructural
safetyofwaterconservancyprojects.Thedeformationdataofwaterconservancyprojectsisatypeoftypical
nonstationarysignal ,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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