灰色理論在低應(yīng)變預(yù)測(cè)樁極限承載力中的應(yīng)用研究.pdf

1、長(zhǎng)安大學(xué)碩士學(xué)位論文灰色理論在低應(yīng)變預(yù)測(cè)樁極限承載力中的應(yīng)用研究高云霞申請(qǐng)學(xué)位級(jí)別亟學(xué)科名稱(chēng)絲蔓拯型皇值：臣掛盔論文提交日期2Q籩生壘目論文答辯日期2QQ5生Q魚(yú)目Q三日2005年06月AbstractPilefoundationhasbeenwidelystudiedbecauseofitspracticalvalues，Theultimatebearingcapacityofsinglepileisseriouslyallimpor

2、tantparameterinpilefoundationdesignThefieldverticalloadtestofasinglepileisthemostbasicmethodofdeterminingtheultimatebearingcapacityofit，HoweversometestsdOnotmeetthestandardofthecodeThismeansthatinmanycases，thepilesdonotr

3、eachthefailureAsaresulttheexactvalueofultimatebearingcapacitycannotbeachievedDeterminingtheultimatebearingcapacitybylow—straindynamictestinghasbeenrelativelypaidmoreattentionbycivilengineeringcircles，becauseofitsspecialm

4、erits，suchasshorttestperiod，expendedlittlefunds，andthegoodcheckingeffectofpilesqualityNowtherearemorethantenmeasuresoflowstraindynamictestinghavebeenstudiedandappliedintopileprojectsExceptfortheirspecialtyandscopeofappli

5、cation，thecommoncharacteristicofthosemeasuresisthattheparameterofdynamics，suchasdynamicriglditymustbetested，andthensomestablelinearlyrelationbetweendynamicandstaticrigidityisexpected，Socantheultimatebearingcapacityobtain

6、edthisthoughtwayleadedtheresultthatthebasicprincipleofbylowstraindynamictestingistoonalfOW，theconversionbetweendynamicandstaticrigiditypurelydependsonempiricalformulaHoweverthewayofdeterminingtheultimatebearingcapacityis

7、GreysystemtheoryinthispaperbywhichwedirectlyusedynamicrigiditytodeterminingtheultimatebearingcapacityItisthatdynamic(notstatic)rigidity，whoisthetruevalueinfieldsofpileengineeringafterall，socanitreflectthetruefactofpilesa

8、ndsoilBythiswaywemaygetridofthedemerit，ofwhichlow—straindynamictestingdependsonempiricalformulaThatistosayaNeWthoul曲taboutresearchingtheultimatebearingcapacityofthesinglepilehasbeenreferenced、Thispaperfirstlyintroducedth

9、ebasictheoryoflow—straindynamictestingresponse，andsummarizedthemainfactorswhichinfluenceultimatebearingcapacityofsinglepileSecondlyitgivenparisofinformationaboutGreysystemtheoryThirdlyonthefoundationofsomeformerpractical

10、datumofpilefoundation，andbyGreyinterconnectanalysis，Greymodeling，remnantidentifying；Greyprediction，thepaperputforwardtheGreypredictionoftheultimatebearingcapacityofthesinglepileThen，thecorrespondingprogramswerewrittenbyM