考虑应力路径变化的路基土的力学特性研究及工程应用

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1、重庆交通大学硕士学位论文考虑应力路径变化的路基土的力学特性研究及工程应用姓名：计招红申请学位级别：硕士专业：道路与铁道工程指导教师：梁波20080401ABSTRACTIIABSTRACTSincethe1980s，asrapiddevelopmentofhighwayconstructioninChina，theconstructionofhighwaysincreasinglyincreaseinbadgeologicalgrowing．Itbecomesaimportantfactorhowtotreatf

2、oundationundersubgradeandprotectslopeonfinembankmentandexcavationcut，andrestrictstrafficinvestmentandconstructionperiodforthesoilsubgrade．Atpresent，thedesignandconstructionprogrammeofsubgradearebasedonstateofinitialandcompletesoilstressonthewhole，withouttakin

3、gintoaccountprocessaboutstresschangeintheprocessofconstruction，SOtheactualsituationwillhaveagreaterdifference．Therefor，Thispaperattemptstousestresspathanalysismethods，inordertobeaersimulateactualprojcots．Firstly'thispapersystematicallygeneralizedtheimpactofst

4、resspathvarietyforshearstrength，constitutiverelationanddeformationofsoil．Theresultsshowedthat：Asthedifferentpathofstressload．theshearcharactersofsoilaredifferent，andthetotalstressshearstrengthofsoilisvary；stresspathvarietyisadistinctimpactforconstitutiverelat

5、ionanddeformationofsoil．Secondly,thispaperalsoinextensoandsystematicallygeneralizedthevarioustheorieswhichareappliedtostabilityanalysisandsettlementcalculationsoffoundation,andfurtherdiscussedtheapplicationtheoryaboutthestresspathanalysismethodwithembankmentf

6、illandcutslopeconstruction．Thirdly,Inthispaper,typicallyexamplesofthesubgradeconstructionincludefoundationsettlement，embankmentfill，compaction，aswellasexcavatingtheslopewerecalculatedanalysis．atthesametime，thecorrectnessofthetheorythatstresspathprincipleappli

7、cationinsubgradeconstructionWasdemonstrated．Thetheorythatstresspathprincipleinembankmentfillandcutexcavationisstillinthefurtherexploratorystage，aswellas，theexistingtheorieswillbefurtherdeepenedanddemonstratedbytestintheroom，actualdesignandconstructionandfeasi

8、bilitystudies，andfurtherdeepen．Keywords：Stressvariety；stresspath；Mechanicalproperty；embankmentfill；cut-slopeexcavation重庆交通大学学位论文原创性声明本人郑重声明：所呈交的学位论文，是本人在导师的指导下，独立进行研究工作所取得的成果。除文中已经注明引用的内容