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ID:36464489
大小:2.78 MB
页数:73页
时间:2019-05-10
《紧邻地铁区间隧道的深基坑施工变形研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、广州大学硕士学位论文紧邻地铁区间隧道的深基坑施工变形研究姓名:王涛申请学位级别:硕士专业:结构工程指导教师:孙作玉;赵桂峰20070501AbstractIt'Sinevitablythattheinfluencecouldbecausedtosurroundingsituationbydeepexcavation.Especiallywhenconstructedinthesoftsoil,hjgbwaterlevelandothercomplexconditionsunderexcavation,soilslip,pitinstability,piledeflection,pitupU
2、ft,supportingstructuresedonsleakageandflowsoildisastersmayocc'or9whichcancauseabigthreattothesurroundingbuildings,undergroundbuildingsandpipelines.Atthemeantime,moreandmoresubwaysageconstructedtoreleaseheavytiaf:[]c.It’sanintractableproblemtocalculatethesoftdisplacementandprotectsubwaytunnelandoth
3、erbuildingswhendesigningandexcavatingdeepfoundationpitnearsubwaytunnel..Toqualitativeandquantitativeresearchonthesurroundingenvironment,especiallysubwaytunnelneardccpexcavation,inthispaper,numericalsimulationanalysisinthetheorywithpracticalwaysisactedtotheentireprocessofabusinesscenterdeepexcavati
4、onwhichissupportedbydiaphragmwallwithinternalsupports.Neuralnetworksandfuzzycontrolalsoareadoptedinthispapertoforecastthelateraldisplacementofdiaphragmwall.Somerolesandmeasuresaresummarizedtocontroltheinfluencecausedbydeepexcavation.Themainworkincludes:Firstly,thenumericalsimulationisresearchedont
5、hestageexcavationofdeepfoundationpit.Itisanalyzedthatthestabilityofthesoilandthesupportingstructureandtheenvironmentalsecurityespeciallythetunnelwiththeconstructionphasechanges.Throughtheactualexcavationprocesssimulationanalysis,therulesabouttheforcesandthelateraldisplacementsofwails,thegroundsett
6、lementbehindwall,thetunneldeformationaresummarized.Someconclusionsandrecommendationsareusefultothedeepfoundationpitdesignandexcavation.It’sshowedthatnumericalanalysismethodcaneffectivelysimulatethecomplicatedconstructionprocess,andforengineeringdesignanalysisandoptimization.Secondly,primaryresearc
7、hisprocessedondeformationintelligentforecastoftheretainingstructure.Itisverydifficultandcomplextopredictthewalllateraldisplacementaccordingtotraditionaltheoryandnumericalmethodbecauseoftheconstructionfuzzinessand
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