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1、浙江大學(xué)博士學(xué)位論文真空聯(lián)合堆載預(yù)壓加固軟基試驗及理論研究姓名：金小榮申請學(xué)位級別：博士專業(yè)：巖土工程指導(dǎo)教師：龔曉南;俞建霖20070101浙江大學(xué)博士學(xué)位論文AbstractVacuumpreloadingandvacuum-surchargepreloadingareeffectivemethodstoimprovesoftfoundation．Inrecentyears，thesemethodwasextensivelyusedtotreatsoftclaygroundsuchasharbo
2、ryard,airport,electricpowerplant,expresshighway,highwayatbridge-headandetc．Therehavebeengreatdeepdevelopmentsofimprovementmechanism，constructiontechniquesanddesigntheory,whereasthedevelopmentoftheoryforvacuumpreloadingandvacuum-surchargepreloadinghasla
3、ggedbehindalottheengineeringpractice．ManyproblemssuchasthedifferencebetweenVacuumpreloadingandsurchargepreloading，thefeasibilityofsoftclay謝thconfinedwaterbyvacuumpreloading．theruleofundergroundwaterduringvacuumpreloading，thestabibilityofvacuum—surcharg
4、epreloading,theenvironmenteffectofvacuumpreloading．itscontrolmethodandctcstillexist．Thisstatushaslimitedthemoreandmoreapplicationanddevelopmentofthesetwomethods，whichlargelyprovokesmorebothacademicandengineeringresearchersathomeandabroad．Basedontheform
5、erresearchers’achievement．thisdissertationfocusedonthemechanismandtheoryofvacuumpreloadingandvacuum-surchargepreloadingthroughlaboratorytest．fieldexperimentandtheoreticalstudy．nemainaspectsofthisdissertationwerestudiedasfollows：1．BasedontheimprovedRowe
6、’Sconsolidationapparatus，thelaboratorytestsofvacuumpreloading,surchargepreloadingandvacuum-surchargepreloadingwereconduced．2．Fieldexperimentofsoftground誦tllconfinedwateratGangwan220kVWasperformed．n圮resultsshowedthatit'ssafeandeconomicthatthetechnologyo
7、f'tearingmembrane'wascombinedwimthe'non-tearingmembrane’whiledrivingPVDs．n忙mainsettlementscouldbeeliminatedeffectivelybyvacuum-surchargepreloadingatsoftfoundationwitllconfinedwater,thedegreeofconsolidationoftotalsoftsoilwas83％andthatpredictionpost-cons
8、tructionwhichwouldlastformorethan100yearswasacceptable．3．Accordingtotheprincipleofequalityofdegreeofconsolidation,basedonthenegativepressuredistributionpatternoftwiceexponentialdecay,theformulaofequalityforsanddrainswasdeduced．Thesoluti
