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1、I1FDS2FDS,,,3FDSMatlabANFISAiBi422%-69%FDSIIAbstractWiththedevelopmentofthesocietyandtheaccelerationoftheprocessofurbanization,moreandmorecomplexmulti-functionalbuildingspaceandpublicspacearebeginningtoappear,makingthepedestrianevacuationmoreandmorecomplexandchangeab
2、le.Therefore,itisofgreatscientificandpracticalsignificancetocarryoutthestudyofpedestrianevacuationandsimulation,tostudytheevacuationcharacteristicsandevacuationprocess,toprovidekeydataandreasonablesuggestionsforpublicevacuation,andtoprovideevacuationdesignforthebuild
3、ingandcitydesigners.Onthebasisofsummarizingthepredecessors'researchonevacuationsimulation,thispaperselectsamoreuniversalsocialforcemodel.Inviewofitsexistingshortcomingsandproblems,havecarriedoutathoroughqualitativeandquantitativeanalysis.Onthisbasis,themodelisoptimiz
4、ed.Theoptimizedmodelincludesthefollowingpointsandconclusions.(1)AccordingtotheunreasonablemovementofpedestriansintheFDSsimulation,thepedestrianpredictionmodelisaddedtomakepedestriansnotonlyinfluencedbytheforcesofthepedestriansaroundthemselves,butalsobyjudgingwhethert
5、hepedestrianswillcollideatacertaintimeinthefuture,selectpedestriansthatmaycollide,andanalyzethedirectionandsizeofthepedestrians'force.ThreeAnindependentsteptojudgethepossiblecollisionwithotherpedestriansontheevacuationroute,soastoadjusttheevacuationpathandavoidcollis
6、ion.(2)Inthecaseofrealevacuation,peopleoftenobservethatpedestriansfollowotherswhenevacuating,thusformingqueues,derivingchannelization,groupmovementandotherevacuationphenomena,butFDSsimulationcannoteffectivelyrestorethephenomenoncausedbythepedestrianpsychology,soanewp
7、edestrianattractionisadded,andtherelatedparametersareanalyzedanddesignedforit.Inordertodetermine,followtheangle,thefreemovement,theexpectedvelocitydirectionandthecurrentspeedandthepedestriandistance,theexpressionofthepedestrianattractionisestablishedandintegratedinto
8、themodel.(3)FormanyparametersinFDSsimulation,anumberofsimplifiedconstantscannotIIIbeusedtoeffectivelyrestoresomeofthedifferentmodel