高速铁路路基沉降变形分析方法与评估实践

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1、AbstractThehighrequirementsoftrackridecomfortandstrictlimitstosettlementafterconstructionofunderlineengineeringinhigh—speedrailwaybroughtlargenumbersofnewtechnicalproblemstounballastedtracklayinganddesign2Lswellasconstructionofunderlinefoundation．Inordertocon

2、trolthesettlementafterconstructionofsubgradestrictlyandsatisfytherelatedrequirementsoffasteneradjustmentandsmoothnessofrailwayverticalcurve，eachhigh—speedrailwaybuiltorbuildingtookmeasurestOconsolidatefoundationinsoftsoilsectionsandcardedsettlementobservation

3、tomonitorandcontrolthesettlementofsubgradeatthebeginningofdesign．Firstly’thepaperdiscussedthesettlementdeformationmechanismofhigh。speedrailwayembankmentsettlementfromthetheory,includingfoundationsettlement，roadbasesettlementandalargeareaofsubsidenceonsurfacea

4、reaandtherelatedinternalsettlementmechanism．andfoundrootcausesofthesettlementdeformationduringhigh。speedrailwayconstructionandoperation．Thenthispaperputforwardthetechnicalmeasurestocontrolthesettlementintheprocessofbuildinghigh—speedrailastomeetthesafetyandco

5、mfortoftheopeningandoperationofhigh-speeddrivingafteroperation·Basisforthesettlementofthecurrentassessmentofthedomestichigh-railcarryoutlate．andnotyetfullyformedascientific，efficient，settlementsystemofobservatlon0nnon．ballastedtracksystemandanalyticalassessme

6、ntofthestatusofimplementation,followingthe”TechnicalGuidelinesforAssessing”and”high-speedrailspecification¨．Underthepremiseofcombiningtheanalysisoflong-termfieldsettlementassessmentofpracticalexperience，thispaperoffersto”assume(calculated)。actual-forecast。Inv

7、ersion．coreparativeanalysis”asthemainprogramoftherelevantcalculation，andsetstheopeningofthenewTheShanghai-NanjingIntercityRailwaySubgradeassessmentas觚example．testsandevaluationsthescientificandpracticalofthemethodstofurtherexploretheinfluenceofdifferentconstr

8、uctiontechniquesonsubgradelineengineeringSettlement·Atlast。drawinglessonfromthesubgradesettlementobservationevaluation0tShanghai-NanjiingIntercityRail，combinedtheactualobservationconditlo