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1、分類號(hào)密級(jí)U45單位代碼10618學(xué)號(hào)106330706墨灰交通戈肇碩士學(xué)位論文論文題目：正陽隧道圍巖變形與支護(hù)結(jié)構(gòu)受力特性研究StudyontheSurroundingRockDeformationandMechanicalCharacterofSupportStructureforZhengyangTunel研究生姓名：王震導(dǎo)師姓名、職稱：徐林生教授博士生導(dǎo)師申請(qǐng)學(xué)位門類專業(yè)名稱：論文答辯日期學(xué)位授予單位工學(xué)防災(zāi)減災(zāi)工程及防護(hù)工程答辯委員會(huì)主席：熊有言2009年3月評(píng)閱人：熊有言涂忠仁ABSTRACTThispaperdependsonZhengyangTunne
2、l，throughmeasuredinformationatconstructionfield，combinedelastic—plasticityfiniteelementnumericalsimulation，studyonthesurroundingrockdeformationandthecharacteristicsofthesupportingstructureunderpressure：(互)Usingtheinformationoffieldmonitoringmeasuring，makeparticularlyanalysisonthesurroun
3、dingrockdeformationandthecharacteristicsofthesupportingstructureunderpressurewhenthetunleWasexcavated．Theresultofanalysisindicatesthattheconvergenceofsurroundingrockdeformationhasastrongspatialandtemporalcharacteristics，theinitialdeformationislargeandquickdevelopment，differentmonitoring
4、sectionshasdifferentdeformationcharacteristics，andthedeformationhassignificantnonuniformity；characteristicsofrockstressalsohasaspatialandtemporalcharacteristics，therockstressoninitialsupportininitialstageisquickandbig，andittakesalongperiod，inthesamecross-sectionalsohavedifferentstressch
5、aracteristics，andphenomenaofbiasisexist晰thvaryingdegrees．(g)Expoundthebasictheoryoffiniteelementsimulationtoundergroundengineeringconstructionprocess．UsinglargescalefiniteelementsoftwareANSYS10．0，makesfiniteelementnumericalsimulationtotheconstructionprocessoftheproject．Separatelyanalyze
6、dthesurroundingrockdeformationandthecharacteristicsofthesupportingstructureunderpressureinthesegmentoftunlewithshallowdepthandpartialpressedandthesegmentofturtle、Ⅳimweakbrokenrock．Throughanalysis，itgets：biasintheprocessoftunnelconstructiondoesmoreimportanttosurroundingrockdeformationand
7、thecharacteristicsofthesupportingstructure；becauseofbias，extremumofboltaxialforce，axialforce、shearstressandofbendingmomentofconcretesprayedallappearatthethickerrocksideofthetunnel；inthesegmentofturtlewithweakbrokenrock，resultinginalargersurroundingrockdeformationbecauseitisdiff
