RESPONSE PREDICTION OF STRUCTURAL SYSTEM SUBJECT TO EARTHQUAKE MOTIONS USING ARTIFICIAL NEU

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1、ASIANJOURNALOFCIVILENGINEERING(BUILDINGANDHOUSING)VOL.7,NO.3(2006)PAGES301-308RESPONSEPREDICTIONOFSTRUCTURALSYSTEMSUBJECTTOEARTHQUAKEMOTIONSUSINGARTIFICIALNEURALNETWORK∗121S.Chakraverty,T.MarwalaandP.Gupta1B.P.P.P.Division,CentralBuildingResearchInstitute

2、,Roorkee-247667Uttaranchal,India2SchoolofElectricalandInformationEngineering,UniversityoftheWitwatersrand,PrivateBag3,Wits,2050,RepublicofSouthAfricaABSTRACTThispaperusesArtificialNeuralNetwork(ANN)modelstocomputestructuralresponseofastructuralsystembytra

3、iningthemodelforaparticularearthquake.Here,theearthquakesinIndiaviz.atChamoliandUttarkashigroundmotiondatahavebeenconsideredfortheanalysis.Theneuralnetworkisfirsttrainedhereforasinglerealearthquakedataonasingledegreeoffreedomstructuralsystem.ThetrainedANN

4、architectureisthenusedtosimulateearthquakesbyfeedingvariousintensitiesaswellasotherearthquakedataanditisfoundthatthepredictedresponsesgivenbyANNmodelaregoodforpracticalpurposes.IftheANNistrainedbyapartofthegroundmotiondatathenitcanalsoidentifytheresponses

5、ofthestructuralsystemwellforthetotalperiod.Thesafetyofthestructuralsystemsmaybepredictedincaseoffutureearthquakeswithouthavingtowaitfortheearthquaketooccurforthelessons.Keywords:Earthquake,chamoli,uttarkashi,neuralnetwork,back-propagation,structure1.INTRO

6、DUCTIONRealearthquakegroundmotionataparticularbuildingsiteisverycomplicated.Thisearthquakegroundmotion,whenitisstrongenoughsetsthebuildinginmotion,startingwiththefoundationandtransfersthemotionthroughouttherestofthebuildinginaverycomplexway.Powerfultechni

7、queofArtificialNeuralNetwork(ANN)isusedtomodeltheproblemofonestoreystructure.Dynamicresponseofastructuretostrongearthquakegroundmotionmaybeinvestigatedbydifferentmethods.Oneofthesemethodsconsistsofconstructingagoodtheoreticalmodelofastructureandcalculatin

8、gtheexactdynamicresponseforanassumedknownmotionofthefoundation.Thisapproachisrelativelytime-consumingandcostly,hasrecentlybeenusedfrequentlyforthefinaldesignofimportant∗Email-addressofthecorrespondingauthor:sne_chak