地震液化大變形預(yù)測及其對高速公路工程影響研究.pdf

1、V793幺16■分類號：衛(wèi)壘25密級：公ⅡUDC：29學(xué)號：Q2152東南大掌碩士掌位論文地震液化大變形預(yù)測及其對高速公路工程影響研究研究生姓名：王越導(dǎo)師姓名：塞9鱉玉麴撞童童丞縫申請學(xué)位級別王堂亟學(xué)科專業(yè)名稱巖王程論文提交日期2QQ曼生Q至旦至魚旦論文答辯日期至QQ墨生Q墨旦墊旦學(xué)位授予單位丕直太堂學(xué)位授予日期至壘Q墨生月旦答辯委員會主席堡拄昌熬援評閱人隧延宣熬攫塞盔經(jīng)副教援2005年03月30日AbstractAbs訂actInth

2、epastfewyears，therewerelotsofearthquakeshappenedinChinaMeanwhile，ourcountryisoneofthenationsthathavethemostseriousearthquakedisastersintheworldTheearthquakeusuallythreatensdomesticlifeandpropertysafetyRecently，manylarge—

3、scalefacilitieshavebeenbuiltowingtoeconomicdevelopmentsatveryfastspeedinChinaSothefrequentearthquakeisaseriouslatentthreattothesafetyoffacilitiesconstructionwhichisinboomingdevelopmentTheparticularhistoryreportsofearthqu

4、akedisatershaveilluminatedthatdamagetopilefoundationsandstructucesmaybecausedbylargegrounddeformation(LGD)duetoseismicliquefactionThiskindofdamagehasbeenobservedmanytimesinseveralstrongearthquakesinthepastThepredictionme

5、thodoflargegrounddeformationanditseffectonhighwayengineeringareresearthedintiffspaper(1)Basedonthereviewofthetheoreticandtestingresearchonlargegrounddeformationinducedbyseismicliquefaction，acomprehensiveintroductionisgiv

6、entotheproblemsofthisresearchsuchastheearthquakedisasterinducedbylargegrounddeformation；themethodstopredictthelargegrounddeformationandthetestingonit；thecharacterofthehighwayengineeringduringtheseismicliquefactionandthed

7、ifferentgroundimprovementmeasuresagainstlargegrounddeformation(2)Thenallapproachtoestimateliquefaction—inducedgrounddeformationsusingeitherCPTorSPTdataisrecommendAndtheapproachisappliedtopredictthepotentialLGDwhichmayhap

8、penonthepartialregionoftheSu—hualhighwayTheoutcomeindicatesthattheproposedapproachcombinesavailableresultsfromlaboratorytest，capturethemechanismsofliquefactioninducedlateralspreads，andcharacterizethemajorfactorsinfluenci

9、ngLGDFurthermorethismethodisrelativelysimpleandcanbeappliedwithonlyafewadditionalcalculationsfollowingallSPTorCPTbasedliquefaction—potentialanalysis(3)ThegenerantprocessofLGDinducedbyseismicliquefactionissimulatedbymakin

10、gUSeofLagrangianfinitedifferencesoftwareFLAC3D，theeffectofvariousparametersonthelateralspreadisalsoanalysedqualitatively(4)ThebehaviorandthecharacteristicofpilefoundationforbddgethatissufferingfromLGDduetoseismicliquefac

11、tionisanalysedbyusingFLAC3DTheresearchshowsthattheremaybeexcessivebendingmomenthappenedintheinterfacesbetweenlipuefiedandnonliqufiedsoillayersSothedesignofpilefoundationshouldnotjustconsiderthedynamiceffectofthesuperstru

12、ctureTheeffectoflateralspreadonpilefoundationCannotbeneglected(5)Accordingtotheanalysisofthecreationmechanismsandtheinfluencefactorofthelateralspreadduetoseismicliquefaction，severaleffectiveengineeringmeasuresthatcanprev

13、entthegroundandpilefoundationsformearthquakedisasterarepropousedFinallysomefavorablesuggestsandprospectsonthefollowingresearchof血isaspectareputforwardKeywords：highway；earthquake；liquefaction；largegrounddeformmion；predict