成層彈性飽和地基Biot固結課題及其在樁基礎中的應用研究.pdf

1、同濟大學碩士學位論文成層彈性飽和地基Biot固結課題及其在樁基礎中的應用研究姓名：馬飛申請學位級別：碩士專業(yè)：巖土工程指導教師：楊敏2002.3.6AbstractTheElasticTheoryMethodiSoneofthemostprevalentmethodsinstudyingthepilefoundationInthepast，theflexibilitymatrixoftheElasticTheoryMethodiSalw

2、aysbasedononeofthefollowingtwopresupposilions：thefirstiSbasedontheMindlinSolution；thesecondisbasedontheextendedMindlinsolutionComparativelyspeakingthesecondiSsuperiortotimfirstsinceitiSmoreclosertotherealsoilstratumcondi

3、tionsHoweverinsoftsoilareathesettlementofthebuildingneedslongtimetocomplete，consequently，notonlythefinalsettlementofthebuildingbutalsotheevolutionofthesettlementiSconsideredInthispaperBiotconsolidationofsaturatedlayerede

4、lasticsollisstudied，basedonwhich。theforceanddeformationofpilefoundationisfurtherstudiedStartingfromthebasicequationsandwaterflowcontinuityequation，throughLaplacetransformandHankeltransform，thematrixordinaryequationsareob

5、tainedThenthetheoreticsolutionscouldbeobtainedifthesolutionsoftimequationsandtheLaplacetransformandHankeltranSformarecombinedForlayeredsoilboththe10adsurfaceandthesoilinterfaceareconsideredinterfacesThecalculationformula

6、couldbeobtainedifeachsoillayeriScalculatedwiththeMatrixTransferMethodAtiertheboundaryconditionsareconsidered，theunknownquantitiescouldbeobtainedInthemethodusedinthispaperthereisadifficultywhichistheoverflowofdataincalcul

7、ationConsequentlyitisnecessarytomakeclearwhetherthecalculationpointisoverorbelowtheloadsurfaceWiththemethodspresentedinthispaperthisproblemcouldbesolvedideallyBesides，LaplacetransformandnumericalinversionofLaplacetransfo

8、rmarealsoillustratedBasedontheElasticTheoryMethod，thesettlementproblemofsinglepileinlayeredelasticsaturatedsoiliSstudiedDifferentfromtheconventionalmethods。thepileisreplacedwithafictitiouspile，whichhasthemodulusofthereaI

9、modulusofpilesubtractedwiththesoiImodulusofeachsoijlayerAsaresulttimpilecouldbecalculatedwithrodtheoryandthesoilcouldbecalculatedwiththemethodspresentedinthispaFerIntheend，computerprogramsareeditedtoassesstheefficiencyof

10、thetechniquepresentdinthispapertocalculatetheBlotconsolidationproblemofsaturatedlayeredelasticstratumandthesettlementproblemofpilefoundationKeywords：saturatedlayeredelasticstratumMatrixTransferMethodLaplacetransformHanke