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1、北京工業(yè)大學(xué)碩士學(xué)位論文大型地鐵換乘站火災(zāi)煙氣擴(kuò)散特性及疏散的研究姓名：侯叢蘭申請學(xué)位級別：碩士專業(yè)：供熱、供燃?xì)?、通風(fēng)及空調(diào)工程指導(dǎo)教師：李炎鋒20090501AbstractAlong、析t11thebuildingofsubwaylines．moreandmorecomplicatedtransferstationscomeup．Asallindispensabletraffictool，subwayplaysamoreandmoreimportantroleinourmodemlife．Itprovidespeopleconvenienceth
2、atCan’tbereplacedbyothertraffictools．Moreover,transferstationisajunctionofthesubwayline’Snet，andthepassagesaretheonlywaytooutside，andthepassagesaremorecomplicated，passengersaremorecrowdedandconcentrated，onceonfire，thedirectionofpeopleevacuationisthesameasthedirectionofsmokediffu
3、sion，bothofwhicharefromundergroundtooutdoortheegressesforpeopletoevacuatearealsoonestospraysmoke．thediffusionof11ightemperaturesmokenotonlydevotetoallthethingsfire，butalsodecreasethevisibilityofthealleyway,anditwillaffecttheevacuationandfireman’Sfirefighting，anditwillcauseveryse
4、riouspeoplecasualty．Compared、^，i也onlyonestation,itismoredangerous．Itisverysignificanttostudysmokediffusioninsubway·transferstation．Inthispaper,thestudysubjectisDongZhimentransferstation．UsingsoftwareCFXoffieldmodelsimulatessituationofsmokediffusiononlyusingstationOWllexhaustsmok
5、esystemwhenthemiddleofstationplatformorthemiddleofthehallisonfire．CFXcandescribethesmokespreadprocessvividly．Moreover,CFXtakesfilelcombustionprocessandradiationeffectintoaccountanditCansimulateallkindsofhannfiflsmokecomponentsandconcentrationofsmoke．Thenwecanknowallthefatalnesso
6、fthefire．Analyzingthesimulationofthefireinheatreleaserate5MWandonlyusingstationownexhaustsmokesystem．Wecanestimatethepathtoevacuate，andanalyzethetimeofthefourdangers’coming，includingthetemperaturedangers’comingtimeintwosafetyheightsthevisibilitydangers’comingtimeandtheconcentrat
7、ionofCOdangers’comingtimethenfindtheshortesttimeandgaintheAvailableSafeEgress"time(ASET)，andanalyzetheaffectionoftheevacuationbythesmoke．TheevacuationsoftwareSTEPSiSahighlyeffectivethreedimensionalsoftware．DesignedbyMottMacDonald．TllispaperusingSTEPSsimulatetheevacuatetime．Eachh
8、allofstationhas100people．Eachinsularstationhas5
