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1、同濟(jì)大學(xué)碩士學(xué)位論文雙圓盾構(gòu)隧道管片襯砌內(nèi)力計算與分析姓名：樓葭菲申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：張慶賀20040301摘要本文總結(jié)雙圓盾構(gòu)隧道盾構(gòu)機(jī)械、管片形式、施工技術(shù)特點(diǎn)，分析雙圓盾構(gòu)隧道與傳統(tǒng)單圓形盾構(gòu)隧道相比的優(yōu)缺點(diǎn)及其管片襯砌在不同施工階段的受力特點(diǎn)。在分析現(xiàn)有的圓形隧道襯砌設(shè)計方法的基礎(chǔ)上，針對雙圓盾構(gòu)隧道襯砌管片的結(jié)構(gòu)特點(diǎn)和使用階段的受荷情況，得出適合于雙圓盾構(gòu)隧道的工程設(shè)計的計算模型，推導(dǎo)出用自由變形的均質(zhì)圓環(huán)模型計算雙圓盾構(gòu)法隧道襯砌內(nèi)力的解析解公式。并結(jié)合具體工程，應(yīng)用有限元計算方法和相關(guān)
2、模型試驗資料對比驗證自由變形模型計算公式的正確性。根據(jù)自由變形模型公式計算所得的雙圓盾構(gòu)隧道襯砌內(nèi)力計算結(jié)果，分析歸納雙圓盾構(gòu)隧道襯砌內(nèi)力分布的基本規(guī)律，并分析管片形式、管片外形特征等參數(shù)對襯砌內(nèi)力的影響規(guī)律。研究的結(jié)果可供雙圓盾構(gòu)隧道施工及管片襯砌設(shè)計工程技術(shù)人員參考。關(guān)鍵詞：雙圓盾構(gòu)、隧道襯砌、計算模型、自由變形模型、內(nèi)力ABSTRACTInthispaper,thetunneldrivenbyoverlapped-double-circularcross．sectionshieldisstudied．Theover
3、lapped-double—circularcross．sectionshieldiscomparedwithtraditionalcircular-faceshieldonshieldmachine，segmentlining，constructingtechniqueandete．Thevirtuesanddisadvantagesofoverlapped-double—circularcross-sectionshieldaresummarized．Andthecharacteristicsofthe10adSon
4、thesegmentwhenconstructingaleanalyzed．Someofthestructuraldesignmodelsfortraditionalcircular-faceshielddriventunnelsarestudied．Inordertodesigntheliningofoverlapped—double—circularcross—sectiontunnel，themoresuitablemodelsareselectedafter1110difledwiththeshapeofstru
5、ctureandotherrelativecharacters．Usingthefreedeformationmodel，aseriesofanalyticalformulausedtocalculatetheintemalforceofsegmentisdeduced，whichissuitableforoverlapped—double-circularcross—sectiontunnel．Andwitllthecalculationofacertainproject,theFEMmethodandsomedata
6、ofrelativemodelexperimentareusedtoveil匆theforms．Aftertheinternalforceofanoverlapped-double—circularcross·sectiontunnelcalculatedbytheformula，whichisdeducedbytheauthor,isanalyzedsystematically’thebasicprinciplesoftheinternalforcedistributionofoverlapped-double—-ci
7、rcularcross—sectiontunnelandtheeffectsoftheappearancecharacteristicsofsegmentonitsinternalforcearegot．Andacomprehensiveevaluation，whichCanbeareferenceforthepeoplewhodesignorconstructtheoverlapped·-double·-circularcross—sectionshielddriventunnel，isgivenintheendoft
8、hispaper．KeyWordsoverlapped-double—circularcross-sectionshield，tunnelsegmentlining，calculationmodel，freedeformationmodel，innerforce聲明本人鄭重聲明：本人在導(dǎo)師的指導(dǎo)下，獨(dú)立進(jìn)行研究工作所
