成绵乐客运专线超长钢轨存放地基设计和变形分析

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1、一————————————————————————————————————～一-。_西南交通大学硕士研究生学位论文第1I页AbstractOperationalmileageofourcountry’Shighspeedrailwayisfarfromtherequirementsofeconomyandsociety，whichledOurgovernmenttohaveformulated“Long．termrailnetworkplanning”．Chengdu—Mianyang-LeshanPassengerDedicat

2、edLineislim血gMianyangandLeshan,whichChengduplayingahubinthemiddle．Itisthefirstinter-cityrailwayinMidwestandisbuiltafterWenchuanEarthquake．BasedonChengdu-Mianyang-LeshanPassengerDedicatedLine，subgradedesignanddeformationofultra-longrailstoragesiteisstudied．1)Geological

3、explorationorultra·longrailstoragesiteWascarriedout．Physicalandmechanicsparametersofsubgradesoilaledeterminedthroughdrill—holesampling，standardpenetrationtestandaseriesofindoorsoiltest．2)Subgradeofstoragesitewasdesignedbasedonphysicalandmechanicsparametersobtained·Set

4、tlementcanbecontrolledbychangingthelength，diameterandspacingofpiles，SOastoguaranteethesmoothnessrequirementforstoringultra．10ngrails．3)FiniteElementMethodsoftwareABAQUSisusedtobuildmodel．inw撕chsubgradesoilisconsideredasidealelastoplasticbodyandgradebeamaswellasCFGpiIe

5、isconsideredaslineelastomertosimulatedeformationofsubgradeunderloadsofultra．10ngrails．Preparationworkanddesignprocessofsubgradeforultra-longrailstoragesiteisstudiedandFoundationreinforcementmethodissummarized．Researchresultscarlprovidereferenceforsimilarprojects．Keywo

6、rds：Ultra—longRail；GradeBeam；CFGPile；numericalsimulationIfIffffffifffff』IfIIIIlJIIIJIlIIIII_西南交通大学硕士研究生学位论文第1II页目录第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1选题背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．2研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．21．2．1岩土工程勘察现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。21．2．2CFG桩应用现

7、状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31．2-3地基处理现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯41．2．4超长钢轨存放现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一51．3研究内容⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．5第2章工程概况和地质概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．72．1地质勘察勘探点布设⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．72．2自然地理概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯72．3区域地理概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯⋯⋯82．4场地地层岩性⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯82．5地基土物理力学性质⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．92．6场地水文地质条件⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯l12．6．1地下水⋯⋯⋯⋯