臨近江河的超深基坑降水控制系統(tǒng)研究.pdf

1、⑧申請同濟大學工學博士學位論文臨近江河的超深基坑降水控制系統(tǒng)研究(國家自然科學基金資助項目編號：10102015)培養(yǎng)單位：一級學科：二級學科：研究生：土木工程學院土木工程巖土工程楊波指導教師：劉國彬教授副指導教師：楊光煦教授級高工(校外導師)二Oo五年九月AbstractABSTRACTWitheconomyandsocietydeveloping，superdeepfoundationnearfiverbecomesmoreandm

2、ore。Asthereiscloseconnectionofwaterbetweenthestructureandthefivertheseepagefieldisverycomplex，furthermore，theconstructionwhichwillcostsuchalongtimemustcrossonefloodseason，SOitisveryseriousforexcavationanddewatering、Ⅳi廿1t

3、hehJ曲waterleverotherwiseitmayleadtohydraulicfailuretotheengineeringwitchcostmillionsofyuanandthedankwhichprotectsthecitynearbyandmillionsofpeopleUsinganti—seepagepurdahoutsidedeepfoundation，anddewateringbetweenSuperdeepf

4、oundationandpurdah，notonlydecreasessoilpressure，butalsoimprovesseepageconditionsTheanti—seepagepurdahisthekeytothedewateringsystem，witchdeterminesengineeringeffectThemainlycomponentofsuperdeepbracestructuredewateringsyst

5、emisthekeycontentinthispaperFirstlybasedoncompositiveanalysisofcarryingcapacityemployment，engineeringcostandconstructionenvironment，themethodtodeterminethosecharacters(suchasthickness，intensitytoleranceandelasticmodule)i

6、sputforward，andsomecalculationswhicharebenefittotheengineeringarealsooutputSecondlywaterpressuretransmittingmechanismandeffectofminishingsoilpressureareanalyzed，SOsomerolesaboutwaterlevel，distanceandeffectofminishingsoil

7、pressureareputforwardThirdlythemainlycomponentofdewateringsysteminsuperdeepbracestructurenearriverwitchincludingsuperdeeppurdah，groutcurtain，reliefhole，chemicalchurninganddewateringareanalyzed，whicharealsoprovedbycertain

8、engineering，somebasictheoryandcalculationsLastlynlemeasuredsoilpressuredisplacementandotherdataofasuperdeepstructureareanalyzedindetailinthispaper，alsothechangeablelawofdisplacementofcirclepitsuperdeepsoilpressure，andtho

9、sefactorswhichaffectthesoilpressureareanalyzed，thepracticalmethodisputforward，whichismorebenefittolatersimilarprojectsKeyWords：Superdeepfoudation，anti—seepagepurdah，dewateringcontrolsystem，soilpressureandtransfermechanis