大准铁路病害路段路基加固处理分析

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1、西南交通大学硕士研究生学位论文第ll页AbstractDaZhunrailwayisoursecondheavyhaulrailwaythatrunningtrainswithtenthousandtonscargo．Withtheincreaseoftrafficvolumeyearbyyear，thedamagetolinebridgeequipmentbecomesmoreandmoreseriouslysincetheoperation，thesubgradediseasesuchasharmfulffeez，mudpumping，subgradesettl

2、ementareincreasinglyprominent．Owingtothepoordrainagesystemofsomesections，thediseaseareparticularlyserious，leadingtothestrengthandstabilityofthesubgradehasbeendifficulttoguaranteethesafetyandstabilityoftheoperation．Anditbearstheheavycoaltransporttask，therefore，seekingatreatmentthatCande

3、alwiththediseasewithoutaffectingtheoperationisverynecessary．Inthispaper，thesubgradeofK37+400-640sectionistakenaSanexample．Thepaperstudiesthemechanicalbehaviorofsubgradeaccordingtothetheoryofsoilmechanicsandcompositefoundation，themethodofnumericalsimulationetc．，thetreatmentisproposed，th

4、emainresultsareobtainedasfollowings：First，throughtheon-siteGPRdetectionreport，learningthesubgradediseasepresentsituationofrailwaysubgradedisease，andanalyzingthecauseofthedisease．Second，basingontheanalysisofthecommontreatmentstotheseillroadbedsusedintheexistingrailwayline，theobliquelime

5、·soilcompactionpilestreatmentisintroduced，Butatpresent，thecalculationtheoryabouttheobliquepilesisn’tperfect，itCan’tproveitsfeasibilityintheorybutbyusingnumericalsimulation．So，theuprightpilestreatmentisdesignedthroughthecompositefoundationtheory．ItCanprovideareferencefortheobliquepilest

6、reatment．Again，thereinforcementschemeoftheobliquepilesanduprightpilesarecalculatedbyusingnumericalsimulation，andAnalysisontheirreinforcementeffectsfromthedeformationandstress．Thecomparisonresultsshowthattheobliquepilesismorebetter．Finally，whenusedinthepracticalengineering，toensurethere

7、inforcementeffectaswellaseconomical，SOthispaperalsooptimizetheangleofobliquepiles，limesoilmixtureratioandtheverticaldistanceofpiles．Keyword-Subgradedisease；subgradereinforcement；uprightlime-soilpiles：obliquelime—soilpiles；compositesubgrade西南交通大学硕士研究生学位论文第1

8、I页目录第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯