京张城际高速铁路八达岭地下车站空气动力学效应分析

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1、万方数据AbstractInrecentyears，withtllerapiddevelopmentofhigh—speedrailway,Chinahassteppedforwardthetimeofhigh—speedrailway．Inordertoresolvethecontradictionbetweenthethincitylandandpeople’Sneedsofconvenienttravel，moreandmoreundergroundrmlwavstationswillbebuilt．However,whenahigh-speed

2、tl试nrunsacrossacomplexundergroundstation，itwillcauseaseriesofaerodynamicproblems，whichwillendangerpassengers’safetyandcomfort．Therefore，somedeeperandcomprehensiveresearchesforhigh—speedrailwayundergroundstations’aerodynamiceffectsandthecorrespondingmitigationmeasuresshouldbedone

3、．Inthisthesis，theresearchisbasedonthepreliminarydesigneddrawingsofBadalingUndergroundRailwayStationandtheknowledgeofaerodynamicsandcomputationalfluiddynamics．ThethesisexploressomerulesofaerodynamicseffectsinBadalingUndergroundRailwayStationwhilehigh—speedtrainsrunacrossthisstati

4、onwithdifferentways，whichusesomeemulationalmodelsofthisstation．Themainworkandconclusionsareasfollows：1．Inthisthesis，thelawsofaerodynamicseffectswhenhigh．speedtrainsrunacrossBadalingundergroundrailwaystationwithoutsettingshaftandPSDsystemhasbeenexplored．Theresultsshowthattwolligh

5、．speed仃ainsmeetinthecenterofthestationistheworstcasetoaerodynamicseffectsofthestation，inthiscase，themaximumtransientpressureattheplatformis0．58kPa／1．7swhichexceedsthestandardmaximumvalue0．41kPa／1．7s．andthemaximumwindspeedis3．49m／swhichmeasuresupthestandardmaximumvalue5m／sproposi

6、ngbyMetroDesignSpecification．2．Inthisthesis．thePSDsystems’aerodynamiceffectsonBadalingUndergroundRailwayStationhasbeenexplored．Theresultsshowthatthemaximumtransientpressureattheplatf01TniS0．4kPa／1．7swhichmeasuresupthestandardmaximumvalue．buttheaerodynamiceffectsbecomeworsewhenth

7、ePSDsystemsareinstalledattheplatform；whentwohigh—speedtrainsmeetinthecenterofthestation，themaximumpressureonPSDisabout937Pawhilehigh—speedtrainsrunacrossthestationandthemaximumwindspeedatPSDdoorsisabout9．88m／swhichexceedsthestandardmaximumvalue5m／sproposingbyMetroDesignSpecifica

8、tion．3．Inthisthesis，theshafts’aerodynamiceffect