高速公路路堤拓寬地基性狀分析

1、浙江大學博士學位論文高速公路路堤拓寬地基性狀分析姓名：孫偉申請學位級別：博士專業(yè)：巖土工程指導教師：龔曉南20050601ANALYSISoFTHEFoUNDAnoNBEHA、ⅡoRINEXPRESS、7I礁YEM嘬ANKM吡NTWIDENINGOwingtotherequirementsofthetremendouslyincreasingtrafficflowintheareasofadvancedeconomyinChinathe

2、existing4laneexpresswaysCannolongermeetthedemandItisveryurgenttowidentheexistingexpresswaysto6to一8一laneexpresswaysSincetheexpresswaywideningprojectsaremainlydistributedincoastalsoftsoilareas，therealerelativelyhighrequire

3、mentsforcontrollingsettlementanddi任brentialgettlementHoweveratpresentresearchesonfoundationbehaviorinexpresswaywideningprojeetshaven’tgainedsatisfactorysystemicachievementsCombiningnumericalmethodwithmeasurementonsiteins

4、tudiesiSaneffectiveWaytoprobeintofoundationbehaviorinwideningexpresswaysAstodirectsplicetypeofembankmentwidening，consideringthethreefoundationtreatmentmethodsunderoldandnewembankmentsrespectivelyusingelasticmodel，thehori

5、zontalandverticaldisplacementfieldsofthefoundationarecalculatedandanalyzedinthisthesisThisthesisstudiesandanalyzesindetailhowthemainphysicalmechanicsparametersoftheembankmentandfoundationaffect血emaximumsettlementminimums

6、ettlementanddifferentialsettlementofthetopsurfaceoftheembankment，andmakeseffortstofindoutthegoverningprincipleByanalyzingthefoundationbehaviorwhendifierentfoundationtreatmentmethodsareadopted，itisarguedthatwhencompositef

7、oundationmethodisusedbothsettlementanddifierentialsettlementofthetopsurfaceoftheembankmentaresmallerthanthosewhenconsolidationmethodiSadoptedUsingelastoplasticconstitutivemodelthethesiscalculatesandanalyzesthehorizontala

8、ndverticaldisplacementfieldsinthefoundationwhenidenticalparametersareadopted，andsumsuptheunderlyinglawswhenthesettlementanddifierentialsettlementofthetopsurfaceoftheembankmentvarywiththeembankmentandfoundationparametersB

9、yanalyzingandcomparingthecalculationresultsofthetwomodelsitiSconcludedthatthecalculationresultsofthetwoconstitutivemodeIsarequitecloseInseparatesplicetypeofembankmentwidening，thehorizontalandverticaldisplacementfieldsoft