成都地铁地下线振动预测方法-研究

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1、万方数据西南交通大学硕士研究生学位论文第1l页AbstractAtpresent，manydomesticcitiestoeasetrafficcongestioninurbanareunderconstructionsubway．ButwiththeincreasingmilesofsubwayandtheimprovingspeedperhourIenvironmentalissuesareincreasinglyraisedbythesubway；especiallyenvironmentalvibrationproblemhasattractedattentio

2、noftheauthoritiesandresidentsaroundthesubway．Thevibrationimpactontheenvironmentofthemetroinoperationperiodhasalottodowiththevibrationenvironmentalimpactpredictionbeforethemetroconstruction．Theaccuracyofthepredictionresultshaveaprofoundimpactonmanyaspectsofthemetroproject，suchasvibrationc

3、ontrolmeasuresandprojectinvestment，etc．Therefore，thestudyofhowtopredictingvibrationenvironmentalimpactcausedbythemetroscientificallyandobjectivelyhasahighpracticalsignificance，itcanprovidedecision-makingbasisforconstructionunitsandgovernmentdepartments．Thisarticleisbasedonthedomesticandf

4、oreignresearchofvibrationpredictionmethodcausedbythemetro，summariesthecharacteristicsandproblemsoftheurbanmetrovibrationpredictionmethod，focusonthefollowingresearch：IntheworkingconditionsofChengduMetroLine2，accordingtovibrationenvironmentimpactpredictionformularecommendedbyappendixCofTec

5、hnicalGuidelinesforEnvironmentImpact-AssessmentofUrbanRailTransit(HJ453-2008)，selectundergroundlinebetweenJinZhouroadstationandBaiCaoroadstation(downward，YDKI8+300)topredictthesurfaceenvironmentvibrationwithinthescopeof75mfromoutsidethecenterlineoftherail．Atthesametime，measurethesurfacee

6、nvironmentvibrationwithinthescopeof75mfromoutsidethecenterlineoftherailofundergroundlinebetweenJinZhouroadstationandBaiCaoroadstation(downward，YDK18+300)whichalreadymentionedabovetoobtainthetestdatum．Comparepredictedvalueswithmeasuredvalues．Accordingtothemeasuredvaluesonthespotandmathema

7、ticalcalculation，putforwardtheparametersof‘a’and‘b’whichrecommendedbyappendixCofTechnicalGuidelinesfo，．EnvironmentImpact-AssessmentofUrbanRailTransit(HJ453—2008)tocalculatedistancedecayintheChengduPlainofspecificenvironmentalandgeologicalCOnditions．Theresultsshowthat：Unde