交通荷載作用下軟土地基塑性變形的分析.pdf

1、浙江大學(xué)碩士學(xué)位論文交通荷載作用下軟土地基塑性變形的分析姓名：申昊申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：巖土工程指導(dǎo)教師：唐曉武20130310AbstractAbstractWiththedevelopmentofurbanization，thepopularityofthedesignoflowembankmentandtheincreaseofthespeedandtheloadoftraffic，peoplepaymoreandmoreaRe

2、ntionontheproblemoftraffic—inducedsettlementTheexistingmodelsofcalculatingthetraffic—inducedsettlementaremostlybasedontheempricalequationsintheframeworkofundraindcyclictestsAsaresultofthis，thecouplingrelationshipbetweent

3、heaccumulatedshearstrainandthedissipationofexcessporepressurehasnotbeenconsideredThus，inthisthesis，thecyclicmodelwhichCanconsiderverticalconsolidationandcombinedverticalandradialconsolidationispresentedandthemodelisappli

4、edtotwocasesAtlast，themethod“gate—typecementmixingpiles’’isproposedtosolvetheproblemofdifferentialsettlementatthebridgeheadWithrespecttotheproposedcyclicmodel，theplasticstraincomprisestwoparts：plasticvolumetricstrainandp

5、lasticshearstrainInthecalculationofplasticvolumetricstrain，thedissipationequationwithasourceterm，whichcouplesconsolidationtheorywiththeexperimentallyachievedcumulativeporepressuremodelunderundrainedcondition，isadoptedInt

6、hecalculationofplasticshearstrain，thehardeningfactorofplasticvolumetricstrainistakenintoconsiderationIntheproposedmodels，thestrainincrementcofficientAisbasedonthehardeningfactorofplasticvolumetricstrainwhilethestrainincr

7、ementcofficientAisaconstantinthetraditionalexperimentalmodelsInthedynamicanalysisofsoilsundertraffic，theFLAC3DisadoptedThentheproposedmodelsareappliedtothehistorycases，whichconcludethatthesettlementinducedbytheplasticshe

8、arstrainaccountsforabout70％ofthetrafficinducedsettlementAbouttheproposedmethod“gatetypecementmixingpiles”thecontinuouscementmixingpilesshouldbeconstructedatthebothsidesofthefootoftheslopeandthelengthofpilesisvariableacco