非飽和土邊坡穩(wěn)定分析及抗滑樁優(yōu)化設(shè)計研究.pdf

1、中南大學(xué)博士學(xué)位論文非飽和土邊坡穩(wěn)定分析及抗滑樁優(yōu)化設(shè)計研究姓名：戴自航申請學(xué)位級別：博士專業(yè)：地質(zhì)工程（巖土工程方向）指導(dǎo)教師：彭振斌2001.7.1主墮奎蘭墮主蘭堡堡奎：斐望塑圭望墼整塞坌塹墨墊塑壁垡絲蘭生蟹坐旦————一StudyonSIopeStabiIityAnalysisforUnsaturatedSoilsandOptimumDesignforStabilizingPilesAbstractAcomprehensivean

2、din—depthstudyonthetwoaspects，ieslopestabilityanalysisforunsaturatedso訂sandoptimumdesignforstabil主zingpilesforlandslides(incIudingsIopesforsaturatedsoilsandunsaturatedsoils)ismadeinthepaperThemaincontentsareasfollows：10n

3、theonehand，severalintegralmethodsoflimitequilibriumforslopestabilityanalysisforunsaturatedsoilsarepresentedbasedontheanalysisofmatricsuction，stressvariablesandshearstrengthinthemFormulaeofsafetyfactorandinternalforces0fs

4、10pesarededucedTheanalysiscalculationsareprogrammedOntheotherhand，tothesameproblems，打omthepointofviewofstressaDddeformation，thefi】1iteelementmethodispresentedInthismethod，soilorrockstrataafemodeledaseIastoplasticbodiesth

5、atobeytheDruckerPrageryieldinglawandthecorrelatiVenow1awMeanwhilethematricsuctioncontributionstotheelastoplasticpar鋤etersaretakenintoaccountVerificationandcompa“sonofthetwomethodsaremadebyanexample2Basedontheanalysisofla

6、ndslidemechanism，theconceptsoflandslidepausingan91eandrotationan百eareestablishedThenthereasonablemethodstodete唧inetheresidualshearstrengthofslidingbodiesarepointedoutTheintegralmethodsoflimit—equilibriumareextendedt0beus

7、edincalculatinglandslideth兀lstsThereasonableplacesofstabilizingpilescaIlbequantifiedaccordingtocalculatingresultsTheconceptofdistributionfunctionsofthelandslidethrustandtheresistanceofsoilsorrocksbeforepilesareputforward

8、basedontheanalyticalresultsoftestdataofsomeprototypesofthestabilizingpilesandthetesting—pilesinsiteinChinaAtableofdistributionfunctionsisproVidedThecalculationmethodofcriticalspacesbetweenpilesisobtainedbyanalyzingtheco—

9、workprincipleofpilesandsoils3ThedifferentialmethodispresentedtocalculatetheinternalfbrcesofcantileVer—pilesthroughtheanalysisofbearingforcesanddefbrmationofstabilizingpilesThecaIculationformulaeofinternalfofcesofrigidsta

10、bilizingpilesinrockarededucedTosimplifytheprocedureandimprovetheprecision，thefinitedifferencemethodforthecalculationofawholeelasticstabilizingpiIeisputforwardbasedontheprincipleoffoundationcoefficienfmethodItcanalsobeuse