非飽和土的力學(xué)與水力性質(zhì)及其彈塑性模擬.pdf

1、上海大學(xué)碩士學(xué)位論文非飽和土的力學(xué)與水力性質(zhì)及其彈塑性模擬姓名：向黎申請學(xué)位級別：碩士專業(yè)：巖土工程指導(dǎo)教師：孫德安20080101上海大學(xué)碩士學(xué)位論文ABSTRACTWiththeretrievingofnlemechanicsofunsaturatedsoilsinthemiddleperiodoftwentycenturytheresearchonthemechanicsofunsaturatedsoilsbecamethehot

2、spotfieldofthesoilmechanicsresearchinthe90softhetwentycenturyThemostimportanttopicinunsaturatedsoilmechanicsistopredictthedeformationandstrengthAswellknownpredictingthedeformationandstrengthofunsaturatedsoilsneedsaconsti

3、tutivemodelRecently，someresearchersstartedtoconstructtheconstitutivemodels，whichCancoupleofthemechanicsandhydraulicbehaviorofunsaturatedsoilsEventuallythismodelcallnotonlypredictthedeformationandstrengthbutallSeflectthee

4、ffectofsaturationtodeformationandstrengthInthisthesis，thestudieslistedbelowarecarriedout1Fromtriaxialtestresultsofunsaturatedsoils，themechanicalbehaviorofunsaturatedsoilsisstudiedMyresearchconclusionisthatunderthesamecon

5、ditionofnetstressandsuction，differentsaturationofsamplehavedifferentstressstrainrelationshipsandstrengths2Inordertoinvestigatethehydrauliccharacteristicsofunsaturatedsoilsacomparativestudyismadebyperformingaseriesoftriax

6、ialandKotestsontwokindsoftheunsaturatedsoilspecimensInaddition，thedrying／wettingcyclictestswereconductedonthepreconsolidatedspecimenunderdifferentisotropicnetstresses3Themechanicalandhydraulicbehaviorsfromtriaxialtestonu

7、nsaturatedsoilsunderdrainedconditionwerepredictedusingthemodelproposedbySuneta1TlliSPapel“presentsthemodelpredictionsofunsaturatedsoilbehaviorunderundrainedcondition，comparedwiththeresultsobtainedfromtriaxialundraintests

8、onunsaturatedcompactedsoilduringisotropicandshearloadingThecomparisonsindicatethatthemodelCanwellsimulatethehydraulicandmechanicalbehaviorofunsaturatedsoilsunderundrainedconditionKeywords：mechanicsofunsaturatedsoil，const