厦门东通道海底隧道陆域段异常变形原因分析及对策研究

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1、西南交通大学硕士学位论文厦门东通道海底隧道陆域段异常变形原因分析及对策研究姓名：宋南涛申请学位级别：硕士专业：桥梁与隧道工程指导教师：王明年20070501西南交通大学硕士研究生学位论文第1I页AbstractSinceXia’meneastpassagesubseatunnelhasbeenconstructed，dangerouscasehashappenedmanytimesinthesubseatunnel．Fieldmonitoringmeasurementshowsthatalotoftunnelcrosssection’scrownsettlementandlevelconve

2、rgenceexceeddesignrequirementandcriterion．Basedonfieldmonitoringmeasurementdata,thethesissummarizesthecauseandcountermeasureforabnormaldeformationofeachkindandofferssomebeneficiaiconclusionsandsuggestionstothesubseatunnelconstruction．Thispapermainlyconsistsofthreeparts，whichareabnormaldeformationcl

3、assification，causeanalysisforabnormaldeformationofeachkindandcountermeasurestudyonabnormaldeformationofeachkind．FocusingonXia’meneastpassagesubseatunnel，thepaperanalyzesfieldmonitoringmeasurementdataindetail．Accordingtocriterionandreferenceresearch，theabnormaldeformationisclassifiedintothreecategor

4、ies：crownsettlemelRabnormity,levelconvergenceabnormityandabnormaldeformationoftemporarysupport．Combinedwithexperimentformechanicsparametersofsurroundingrock，monitoringmeasurementdataandnumericalcalculation，thepaperanalyzesthecauseforabnormaldeformationintheaspectofgeologicalcondition,crosssectioncl

5、oseddistanceandtime，integralsinking，sequenceofCRDmethodexcavation．Sequentiaily’themaincauseforabnormaldeformationofeachkindisrespectivelyfixedout．Ithastakenvariousmeasuresagainstabnormaldeformation，includingenhancingstiffnessandintensityoftemporarysupport，settinglockinganchorbar,groutingininverteda

6、rch,constructingcontinuouswallfordrawdownandSOon．Accordingtonumericalcalculationandmonitotingmeasurementdata,eachmeasure。Seffectoffunctionandapplicationisresearched．Finally,thecountermeasureforabnormaldeformationofeachkindisoffered．KeyWords：Subseatunnel；Monitoringmeasurement；CRDmethod；Abnormaldefor

7、mation；Causeanalysis；Countermeasurestudy．西南交通大学硕士研究生学位论文第1页第一章绪论1．1课题研究的工程背景及隧道基本情况厦门东通道海底隧道工程位于厦门岛东北端的湖里区五通村与翔安区西滨村之间，呈北东向展布，隧道全长约5．95kin，其中海域段长约4．2公里(见图1．1)。东通道工程是厦门市公路骨干网规划中的重要组成部分，是厦门岛连接大陆的第三条通道；同时，东通道海