資源描述:
《淺談土壓盾構(gòu)掘進(jìn)對(duì)土體影響的試驗(yàn)研究與數(shù)值模擬》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、上海交通大學(xué)博士后學(xué)位論文土壓盾構(gòu)掘進(jìn)對(duì)土體影響的試驗(yàn)研究與數(shù)值模擬姓名:楊洪杰申請(qǐng)學(xué)位級(jí)別:博士后專業(yè):巖土工程指導(dǎo)教師:葛修潤(rùn);楊國祥20060401摘要本文在模擬試驗(yàn)、實(shí)際r程監(jiān)測(cè)和計(jì)算機(jī)數(shù)值仿真的基礎(chǔ)上,詳細(xì)研究了士壓平衡看構(gòu)在上海軟土地區(qū)的掘進(jìn)時(shí)所引起的地層響應(yīng)。首先分析了i壓甲衡盾榴對(duì)±莓黲擾動(dòng)枧避;其次,聯(lián)照彈瞧力學(xué)中的Mindlin積分公式,編到了Matlab計(jì)算程序,通過該程序詳細(xì)計(jì)算了盾構(gòu)周尉土體中的附加麻力的大小和分布;第三,暹過}:海藏Lh鼴一濱矧潞區(qū)閩蘧鐵夔器梅施工凌濺,取褥了大鬣主體熬主蓬力、位移、孔隙水壓的實(shí)測(cè)數(shù)據(jù),著
2、重對(duì)其中的土壓力和地層的沉降做了分析,鼠實(shí)際數(shù)搖中研究了詹構(gòu)箍迸的我動(dòng)范圍稻程度;第圈,通過直徑為{.8米的貘型滕構(gòu)和擁滅的試驗(yàn)平臺(tái),通過窀內(nèi)模擬試驗(yàn),研究了上壓力分布以及刀橇7r口率對(duì)盾構(gòu)i:作參數(shù)的影響;第五,利用大硝通用有限元軟件ANSYS和巖土嘲星專罰較傳FLAC3D,封±壓乎衡鷹均逐續(xù)掘進(jìn)對(duì)贗引起艇士體喻應(yīng),包括土壓力秘沉降做了詳細(xì)仿真計(jì)算;最后,在卜述工作的基礎(chǔ)上,提出了1種簡(jiǎn)單的描述盾褥掘進(jìn)匏數(shù)學(xué)模型,}蓋詹黲藩方茲海筵量份為主要控露l量,在l乏基璐上瓔究器穆各種參數(shù)的相互關(guān)系。關(guān)鍵詞:盾橡地層響應(yīng)附加庖力模擬試驗(yàn)仿真計(jì)算數(shù)學(xué)模型Ab
3、stractBasedontheimitationtest.monitoringofpracticalengineeringandemulationalcalculation,thispaperstudiestheresponseofsoilindetailwhileearthpressurebatance(EPB)shieldmachineadvancinginShanghaisoftsollregion.First.thedisturbingmechanismofEPBshieldmachinetOsoiliSanalyzed.Then.Min
4、dlinintegralformulaofelasticmechanicsiSappliedandMatlabprogrammeiSwrittentocalcutatethevalHCanddistributionofadditionalstress.Third.a(chǎn)largequantityofdataisobtainedinthemonitoringofconstructionofShanghaiChengshanroadtOBinzhouroadinterzonetunnel,includingtheearthpressures,displac
5、ementsandporepressures,andthemainattentioniscenteredontheearthpressureandsettlementtotrytOfindoutthescopeanddegreeofdisturbingregionwhenshieldtunnelling.Forth.byconductinganimitationtestusingtheshieldmachinemodelwithdiameterof1.8metersandrelatedexperimentalplatform,calthpressu
6、redistributionandeffeCtofopenrationofcutterheadtoworkingparametersarestudied.Fifth,largescalegeneralfiniteelementsoftwareANSYSandspecialsoftwareofgeomechanicsFLAC3Dareusedtostudytheeffbctsofcontinuoustunnellingofshieldmac址nctosoilanddetailedcalculationiSconductedtOgivetheresul
7、tsincludingearthpressureandsettlements.Finally,basedtheresearchWOrkabove.a(chǎn)simplemathenmticaImodelofcontrollingthetunnellingprocessofshieldmachineisputupinthispaper,inwhichthemaincontrollingvariableiSthehunchingquantityinthefrontoftheshieldmachine,andcorrelationofworkingparamet
8、ersarestudiedonthisbase.Keywords:Shieldmachine;responseofsffa