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272Vol.27No.220062RockandSoilMechanicsFeb.20062004-07-122004-10-251964E-mail:gujiliwg@163.com10007598(2006)0203130412(1.2000932.200030)-TV554AAnalysisofgroundtraversesettlementtroughcausedbyshieldconstructionQÜJi-li1,XUYing-zi2(1.UniversityofShanghaiforScienceandTechnology,Shanghai200093,China;2.ShanghaiJiaotongUniversity,Shanghai200030,China)Abstract:ThesettlementtroughinducedbytheshieldconstructionisresearcheddeeplybasedontherawtestmaterialinsituinmetrosectionbetweenLongdongroadandCenturyPark;therelationshipsbetweentheshapeofsettlement,influencescope,widthcoefficient,thelocationwherethelargestsettlementappearsandthedepthofthetunnel,arepresented.Andthequantitativerelationsbetweenlargestsettlement,thewidthcoefficientandthedepthofthetunnelaregivenusingthestatisticalmethod.Keywords:acrosssettlementtrough;tunneldepth;widthcoefficient;largestsettlement111-1(1)(2)6200mm5500mm1000mm350mm(D)1(B)2(12L,L)2(F3)C50S8(16+13)1620FCB6340mm6540mm28m1997718879.859m2199711994.962m78582116712120061(:m)Fig.1Profileoftunnelandengineeringgeology(unit:m)1Table1Physicalandmechanicfeaturesparametersofsoilstratam%g·cm-3eMPaMPakPa()1.04.633.520.2518.2181.5341.870.9674.213.370.2717.7173.5331.870.91711.036.870.256.3212.5451.761.2412.211.380.2513.297.5501.721.42.051.280.2512.67.34.5351.841.023.953.290.2514.7102.0351.821.023.993.330.2515.39.63.0242.010.6677.26.310.2225191.0261.950.7696.935.780.2517.1207.0301.890.85310.419.250.212.52412.0281.930.78113.7512.380.22.025690d223(1)6.09m–6+6m10.37m–9+9m12.72m–12+12m(2)6.09m65.41mm112.72m24.23mm41.18mm(3)30.9874s=102.486.417x(4)123m6m6.34m2Table2Testingdataatvariousdepthsx(m)smmHm-12-9-6-30369126.09-2-8.32-22.93-55.64-65.41-46.62-12.95-3.6-18.37-2.5-10.58-38.22-47.8448.94-36.52-23.11-6.33-1.59.78-3-5.21-22.42-32.35-36.5-37.56-19.22-10.24-110.37-5.84-12.32-23.68-35.28-34.52-30.21-14.7-10.55-1.411.37-2.91-13.65-42.38-26.08-28.62-20.63-13.5-9.74-8.3312.72-9.76-13.85-22.23-20.75-24.23-26.45-18.25-16.51-12.03x1212121231422Fig.2Traversesettlementtroughatdifferentburieddepth02040608068101214/m/mm3Fig.3Settlementvariationofcenterlineatdifferentdepth3253iR353Table3Fittingrelationatvariousdepthss(x)/mmimR6.09237.8855.15ex−4.35-0.97158.37243.155.76ex−4.64-0.98039.78245.4542.39ex−4.77-0.964810.37258.1437.51ex−5.39-0.923511.37281.9730.16ex−6.4-0.849012.722174.5224.51ex−9.34-0.9578984.357.2910is−=+×R=0.9985884-80-60-40-200-15-10-5051015/m/mm-70-60-50-40-30-20-100-15-10-5051015/m/mm-50-40-30-20-100-15-10-5051015/m/mm(a)6.09m(b)8.37m(c)9.78m-40-30-20-100-20-15-10-505101520/mm-50-40-30-20-100-20-15-10-505101520/mm-30-25-20-15-10-50-25-20-15-10-50510152025/mm(d)10.37m(e)11.37m(f)12.72m4Fig.4Traversesettlementstroughindifferentdepthdifference/m/m/m315/m20060246810051015/mi/m5Fig.5Relationbetweenburieddepthandwidthcoefficient4Table4FittingbetweenwidthcoefficientanddepthRRyabx=+0.83007yabx=+0.99672yabx=+0.88537.5yabx=+0.99803yabx=+0.92858yabx=+0.99854yabx=+0.95928.5yabx=+0.99835yabx=+0.97919yabx=+0.99756yabx=+0.990910yabx=+0.99498bxay+=R=0.9985(1)0.9874s=102.486.417x(2)858891029.735.4xi−×+=R=0.9985510m(3)6.09mi=4.35mPeck2.5i2.5×4.35=10.88m11m12.72mi9.34mPeck2.5i2.5×9.34=23.35m23m(4)44(a)4(e)4(f)3m56m12.72m4(f)(5)PeckiPeck()2πtan452iHRϕ⎛⎞=+−⎜⎟⎝⎠6.09mϕ=1812.72mϕ=14i3.34m6.5m4.35m9.34m4(1)(2)30.9874s=102.486.417x322---316200615Fig.15Curvesofanchoredbarstressvaryingwithtime6[1],,.[J].2005,27(2):153156.YANGZhi-yin,ZHANGJun,WANGKai-xu.Theresearchandapplicationoncompositesoilnailingwalls[J].ChinesejournalofGeotechnicalEngineering,2005,27(2):153156.[2],.[J].,2003,36(11):2428.ZHANGQin-xi,HEJian-yong.Numericalanalysisfordeformationofnailedsoliwallandoptimizationofdesignparameters[J].ChinaCivilEngineeringJournal,2003,36(11):2428.[3],,,.[J].,2004,23(17):30213029.CHENXiao-wen,YANGGuang-hua,ZHANGJun-lu,etal.SupportdesignpracticeusingsoilnailingwallinGuangzhouKaihuachengdeepfoundationpit[J].ChineseJournalofRockMechanicsandEngineering,2004,23(17):30213029.[4].[R].[s.l.]:[s.n.],2003.[5]GJB0298,[S].[6],,1992.[7]GB50307-1999,[S].[8]GB501572003,[S].[9]DBJ/T152097,[S].[10],.[J].,2005,27(3):333337.ANGuan-feng,SONGEr-xiang,GAOJun-yue.TheanalysisofexcavationmonitoringforthePazhoutasubwaystationinGuangzhou[J].ChineseJournalofGeotechnicalEngineering,2005,27(3):333337.316(3)88i=4.35+7.2910-98xR=0.9985(4)(5)[1],,.[M].:,1999.[2],.[M].:,1992.[3],.[M].:,1989.[4],.[M].:,1991.[5].[J].,1991.1622.[6]PeckRB.TunnellinginSoil[A].10thICSMFE[C].Stockholm:[s.n.],1981.607628.[7]AttewellRB,YeatesJ.TunnellinginSoil[A].GroundMovementsandTheirEffectsonStructures[M].EditedbyAttewellPB.TaylorRK.NewYork:SurveyUniversityPress,1984.132215.[8]AttewellPB,YeatesJ,SelbyAR.SoilMovementsInduedbyTunnellingandTheirEffectsonPipelinesandStructures[M].Glasgow:[s.n.],1986.[9].-[M].:[s.n.],1990.[10].[D].:,2002.020406080100120140160180d939484522363432242330.020.010.00.0-10.0-20.0kN322