NUMERICALANALYSISOFFREEZINGREINFORCEMENTMETHODSOFLARGEDIAMETERSLURRYSHIELDLAUCHINGINSANDYSTRATA

NUMERICALANALYSISOFFREEZINGREINFORCEMENTMETHODSOFLARGEDIAMETERSLURRYSHIELDLAUCHINGINSANDYSTRATA.pdf
TheshieldtunnelofNanjingsubwayline10iswithtwo-tracksandisconstructedbylargediameterslurrybalanceshield.Thesectionofshieldtunnelingisinsandystrataofhighwaterpressure.Inordertoensurethesmoothshieldconstruction,thefollowingmethodsareusedforgroundconsolidationintheintermediateairshaft:tri-axialdeepstirringpilemethod+highpressurejetgroutingpilemethod+verticalfreezingmethod.AccordingtonumericalsimulationofANSYS,whenthetimeofactivefreezingreaches7days,mostoftheadjacentfreezingpipeshavebeencircle-crossing.Whenthefreezingtimereaches30days,theeffectivethicknessofthefreezingwallis2.2r.Inordertoensuretheeffectoffreezing,thelayoutofthefreezingpipeshouldbeslightlylargerthantheeffectivefreezingrange.Thisarticlesimulatesthewholeprocessofshieldtunnelingbynumericalsimulation,includingremovalofthetemporarywall,shieldtunnelingandsoon.Thecalculationresultsindicatethatthegroundconsolidationhasachievedgoodresults.
作者：DAICong HEChuan WANGYao FENGKun ZHANGZhibo
作者单位：DepartmentofUndergroundEngineering,SouthwestJiaotongUniversity,Chengdu,Sichuan610031,ChinaChinaRailway14thConstructionBureauCo.Ltd,Jinan,Shandong250014,China
母体文献：第八届中日盾构隧道技术交流会论文集
会议名称：第八届中日盾构隧道技术交流会  
会议时间：2015年9月9日
会议地点：南京
主办单位：中国土木工程学会,中国岩石力学与工程学会,中国公路学会
语种：chi
分类号：
关键词：sandystrata  slurryshield  freezingreinforcementmethods  shieldlaunching  numericalanalysis
在线出版日期：2018年11月22日
基金项目：
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NUMERICALANALYSISOFFREEZINGREINFORCEMENTMETHODSOFLARGEDIAMETERSLURRYSHIELDLAUCHINGINSANDYSTRATA.pdf

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