地铁车站火灾通风数值模拟研究

《地铁车站火灾通风数值模拟研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、西南交通大学硕士学位论文地铁车站火灾通风数值模拟研究姓名：汪文光申请学位级别：硕士专业：桥梁与隧道工程指导教师：曾艳华20081201西南交通大学硕士学位论文第1I页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．西南交通大学硕士学位论文第1II页KeywordsSubwaystation；Fire；Ventilation西南交通大学学位论文创