武广客运专线深厚软土地基处理技术研究及沉降计算分析

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1、西南交通大学硕士学位论文武广客运专线深厚软土地基处理技术研究及沉降计算分析姓名：崔维秀申请学位级别：硕士专业：道路与铁道工程指导教师：苏谦20070101西南交通大学工程硕士研究生学位论文第1I页AbstractWiththedevelopmentofnationaleconomyandimprovementofpeople’Slivingstandard，thedemandofspeedandcomfortofvehiclewasincreasinglyimproved，fordedicatedpass

2、engerline，thedemandofsettlementofsubgradewasstricterandstricter．ThedesignedspeedofWuhan—GuangzhoudedicatedpassengerlineWasmorethan200kin／h,whichWasrcqmredIopaveballastlesstrackatatime,andthepost-settlementofgroundWaslessthanorequalto1．5em．Someofthesubgrad

3、eWasonthede印softsoilground,while，thesoftsoilandtheincrustationofbqlrfacelayerdistributedasymmetrically．Theennventionalgroundtreatmentswerehardlypossibletoenntrolthepost-settlementofsubgrade．So，thestlldyWasveryexigent．Groundtreatmentsadoptedinsoftsollsubgr

4、adeofWuhan—Guangzhoudedicatedpassengerline，wereresearchedandanalysedwithprogramming,fimteelementanalysisandmodelexperiment．Firstly,commongro岫dtreatmentsofsoftsoilgroundwereintroduceddetailedly，thecalculationalmethodsofsettlementforcompositefoundationandpi

5、lefoundationwereconsulted,calculationalmethodsofsettlementofgoundtreatmentwerereasearched，andprogrammedwithVisualBasiC6．0．ThengroundtreatmentsadoptedinsoftsoilsubgradeofWuhan—Guangzhoudedicatedpassengerlinewereresearchedandanalysed，post—settlementwerecalc

6、ulatedandanalysed，whichprovidedreferencesforthedesignofsungradeofWuhan—Guangzhoudedicatedpassengerline．Afterwards。anewgroundtreatment--pile-boardst丌∞tllfeadoptedinWuhan—Guangzhoudedicatedpassengerlinewasresearchedandanalysedwithreducedscale(hlo)dynamicmod

7、elexperiment，whichprovidedreferencesfor．thescientificresearchanddesignofpile—boardstructure．Lastly，forecasttechnicofsettlementofgroundWasresearchedandanalysed．Thereasonableforecastmethodsweregived．andsettlementofgroundonatimeinthefuturewasforecastedaccord

8、ingtosomeobservationdata．Keywords．．softsoilground；settlementcalculation；programmingcalculation；dynamicmodelexperiment；settlementforecast西南交通大学硕士研究生学位论文第1页第1章绪论1．1研究背景与意义我国铁路正在实现跨越式发展，新建高速客运专线和改造既有铁路提速建设方兴未艾。由于高速行车要求