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1、北京交通大學(xué)碩士學(xué)位論文日照下混凝土箱梁的溫度場(chǎng)研究姓名:徐帥申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):橋梁與隧道工程指導(dǎo)教師:盧文良20080601ABSTRACTABSTRACTABSTRACT:Inthecurrentgrowingnumberoflarge-span,thetall,thin-walledconcretestructure,andsoon,thetemperatureofthestructurewilloftenhaveagreaterstress,whichwillcausethetemperaturestructureofcracking,thusaf
2、fectingthestructureofnormaluse,ore:、/enleadtostructuraldamage.Inrealitymanybridgeshavebeenconfirmedincidentsofill-consideredandthetemperatureonthecurrentnationaldesignspecificationsonthecaloricloadofconcreteboxgirderprovisionsisnotconsistent.Sothebridgestructureofthetemperaturefieldo
3、fstudyisverynecessary.Inthispaper,aconcreteboxgirderfromsolarradiationcausedbytemperaturehasbeenstudied.Thepaperfh'stusedthe24mconcreteboxgirderinshahebridgetofitalongtheverticaltemperaturecurve,thenstudiedthethermodynamicparameterwhichimpactthetemperaturedistributionofboxgirder.Thep
4、apersimulatedthetemperaturefieldwithsoftwareANSYSandvertifiedtheaccuracyofresults,thepaperstudiedthetemperaturedistributionindifferentthermodynamicparameterandfinallystudiedtheimpactofdifferentpavementanddifferentthickness.Thepaperprovethatthespecificationofrailwayhasnotcontainthecon
5、siderationofverticaltemperaturedifferencecausedbysolarradiationonbaseslab,whichisnotreasonable;inthecaseoflackingradiation,wecouldgettheresultsbytherelativeparameter;Inthecaseoflackingtestingdata,wecouldgettheapproximatevaluebyheatequation.11lepavementwhichoftenbeusedCanconfinethetem
6、peraturedifferenceinagreatdegree,butitcannotmakeagreatinflunceonthelateralandverticaltemperaturedifferenceofthebox·girder.KEYWoRDS:temperaturefieldofconcreteboxgirder:temperaturedifferencecurve;numericalsimulation:thermodynamicparameter:pavement學(xué)位論文版權(quán)使用授權(quán)書本學(xué)位論文作者完全了解北京交通大學(xué)有關(guān)保留、使用學(xué)位論文
7、的規(guī)定。特授權(quán)北京交通大學(xué)可以將學(xué)位論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫(kù)進(jìn)行檢索,并采用影印、縮印或掃描等復(fù)制手段保存、匯編以供查閱和借閱。同意學(xué)校向國(guó)家有關(guān)部門或機(jī)構(gòu)送交論文的復(fù)印件和磁盤。(保密的學(xué)位論文在解密后適用本授權(quán)說(shuō)明)學(xué)位論文作者簽名:導(dǎo)師簽名:簽字日期:年月日簽字日期:年月日獨(dú)創(chuàng)性聲明本人聲明所呈交的學(xué)位論文是本人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作和取得的研究成果,除了文中特別加以標(biāo)注和致謝之處外,論文中不包含其他人已經(jīng)發(fā)表或撰寫過(guò)的研究成果,也不包含為獲得北京交通大學(xué)或其他教育機(jī)構(gòu)的學(xué)位或證書而使用過(guò)的材料。與我一同工作的同志對(duì)本研究所做的任何貢獻(xiàn)均已在
8、論文中作了明確的說(shuō)明并表