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Abnormalitydiagnosisfordeformationbehaviorofpumpstationbuildings
basedonnonlineardynamicsmodel
1,2
1
LOUBenxing ,MAFuheng,LUOXiang 1,2
(1.NanjingHydraulicResearchInstitute,Nanjing 210029,China;
2.CollegeofWaterConservancy&HydropowerEngineering,HohaiUniversity,Nanjing 210098,China)
Abstract:Deformationbehavioranalysisisanimportantscientificmeanstodiagnosetheoperatingstatusofpump
stationbuildings,andsinglemeasurepointdeformationisfocusedmainlyintraditionalsafetydiagnosismethod,
however,thecooperativedeformationpropertiesbetweenadjacentmeasurepointsshouldbemoreconcernedforthe
pumpstation.Inviewofthestrongnonlinearcharacteristicsofthedeformationtimeseriesforpumpstation ,thead
jacentmeasurepointsofthepumpstationwereregardedastwononlineardynamicsystemsinthispaper.Basedon
thechaostheory,itwasprovedthatthedeformationtimeseriesofthepumpstationgenerallyhavechaoticcharac
teristics.Furthermore,byintroducingthedynamicautocorrelationfactorandcross - correlationfactor,anabnor
malitydiagnosisapproachfordeformationofpumpstationbuildingsbasedonnonlineardynamicsmodelwasputfor
ward.Finally ,thevalidityofthemethodproposedwasverifiedbytheexamplesoftheLogistictimeseriesanda
pumpstationoftheSouth - to - NorthWaterDiversionProject.Theresultsshowthatthemethodproposedcanrepre
sentthedynamicstructureanddistanceeffectivelybetweentwononlinearsystems ,anddiagnosethedeformation
behaviorofpumpstationscomprehensivelyfromtheinternaldrivingfactorsandunevendeformationtendencyofad
jacentmeasurepoints ,whichprovidesanewapproachtomastertheoperatingstatusofpumpstationbuildings.
Keywords:pumpstationbuildings;deformation;safetydiagnosis;chaoticcharacteristics;nonlineardynamics
model
(责任编辑:王 婧)
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