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1、西南交通大學碩士學位論文地鐵車站火災(zāi)通風數(shù)值模擬研究姓名:汪文光申請學位級別:碩士專業(yè):橋梁與隧道工程指導教師:曾艷華20081201西南交通大學碩士學位論文第1I頁Abstraeth121‘“centurysubwayisthemainvehicleinthecity.Whensubwaysuppliespeoplewithmuchconvenience.italsobringsmuchdamage.Ifthesubwayhasafire,itwillbringenormousharmtopeople’Slivesandpropertybecauseofitsowncharacter.So
2、itisnecessarytoknowasmanythingsinsubwayfireaspossibleSOastodesignsafermechanicalventilationsystemunderfire.Toknowsomeimportantthingsaboutthesubwayfire,IsimulateafireintheplatformandthetunnelintheXisanqisubwaystationwithFDS,andsummarizetheresultinseveralaspects.IhopewhatIhavedonewilldomechanicalvent
3、ilationsystemunderfiresomegood.AftersimulationIfmdthattheeffctofopeningpartialscreendoorsnearthefiretoexhaustsmokeisbetterthanthatofopeningallscreendoorsduringafireintheplatform.Itcanexhaustsmokefaster,reducetheareaofsmokeandhightemperature,decreasethemaximumtemperature,offerabettervisibilityandwor
4、thitssaltinsuperfire.Openingpartialscreendoorssystemisbetterthanopeningallthescreendoorssystem,anditcan—cometrueeasily.First,itneednomoreequipment.Second,openingpartialscreendoorsinsteadofopeningallthescreendoorsinthemechanicalventilationsystemwillbeok.Inordertoguaranteethesafetyofpeople’Slivesandp
5、ropertybetter,Ihopedesingerswillapplythemechanicalventilationsystemofopeningpartialscreendoorsinplatformscreendoorssystemsubwaystation.ExcepttheabovediscoveryIalsofindthatthestyleofstairs,thesizeoftheopeningofthetwosidesofthestairsintheplatformandafireplumecallaffectthemovementoftheairflowalotinthe
6、platform.SoIhopedesignersofventila—tionsystemunderfirecanconsidertheirimpactonthemovementoftheai川OWfully.Thewhirltubeabovetheorbitandbelowtheplatformshouldadoptvariablecrosssectiontube,whichpoisesthevolumethrougheveryventilator,anditwillbegoodforthesubwaystationbothinorderandunderfire.Duringatrainf
7、ireinthetunnelinthestationitiSnecessarytoclosepartialscreendoorstocontr01thefireandthesmokebetterafterthatallthepassengersgetoutofthetrains.西南交通大學碩士學位論文第1II頁KeywordsSubwaystation;Fire;Ventilation西南交通大學學位論文創(chuàng)