西安市地鐵區(qū)間隧道盾構(gòu)施工對地表沉降機理的研究.pdf

1、西安科技大學碩士學位論文西安市地鐵區(qū)間隧道盾構(gòu)施工對地表沉降機理的研究姓名：王璐申請學位級別：碩士專業(yè)：結(jié)構(gòu)工程指導教師：楊更社20080415Subject：StudyOHtheMechanismofGroundSurfaceSettlementInducedbyShieldConstructioninXi’allSpecialty：ConstructionalEngineeringName：WangLuInstructor：Yang

2、GengsheABSTRACT(signatu陽)型毛幺(Signature)xi’anisofthemostmajormetropolisinwestdevelopmentofChinaThecongestedtraffichasbecomeaseriousproblemforloessareasuchasXi’an，andtheconstructionofsubwayisviewedasaneffectivesolutiontoth

3、eproblemTheshielddrivingmethodhasbeenoneofthemainconstructionmethodsintheurbantunnelinOurcountryMeanwhile，duetocollapsibleloess，somespecialengineeringproblemswouldbefacedThesoilpropertyhasaninfluenceongroundsettlementtos

4、omeextentduringthetunnelconstructionSoitwouldmakepracticalsensetostudysurfacesettlementwhilebuildingtunnelinloessal“eaThepapersummarizesgroundsettlementsinfluencingfactors，characteristicofgroundsettlementsinXi’antunnelTh

5、emechanicsofsurfacesettlementinducedbyshiedconstructionisgeneralizedsystematicallyBuildtunnelintheloessareaisrarelyinvolved，becauseofthecomplexenvironmentinXi’anandprobabilisticloessmechanicsparametersThedisturbanceofsoi

6、lcausedbyshieldtunnelconstructionresultsinthesoilmovement，mainlythegroundsettlement，whichisoneoftheproblemhighlyconcernedinthedesignandconstructionprocessofshieldtunnelingShieldtunnelingissimulatedbyafinitedifferencecode

7、FLAC叫accordingtosurveyinformationThenthecharacteristicofgroundsettlementisstudiedonthebasisofcombinationofthemeasureddataofXi’anNo2SubwayLineandtheresultofnumericalanalysisItgenerallyanalyzesthecharacteristicofgroundsett

8、lement謝tIlrespecttothedepth，thecharacteristicofgroundsettlementonlateralsectionofthetunnelandthelateralextensionofsettlementaswellasgroundsettlementonlongitudinalsectionofthetunnelWithcalculationcomplexionofloessareather

9、egularityisstudiedfromthecharacteristicsofloessTheauthorattachesgreatimportancetotherelativedisplacementbetweenthestructureofsubwaysandthesurroundingsoilsinconditionofsoakedandunsoakeddifferentcapacityofcontainingwaterSo