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200944(127)JOURNALOFRAILWAYENGINEERINGSOCIETYApr2009NO.4(Ser.127)X:2008-06-24XX:,1978,,;,1982,,:1006-2106(2009)04-0013-04UXXX(,610031)::U,U,U,:U;;,;,,;U,:U;;:U213;U238:ADesignandAnalysisofU-shapeGrooveStructureDINGZhao-feng,WUPei-pei(ChinaRailwayEryuanEngineeringGroupCo.Ltd,Chengdu,Sichuan610031,China)Abstract:Researchpurposes:ThroughthediscussiononthestructuredesignofanewtypeofSupportingStructure-U-ShapeGroove,thispapermainlyanalyzesitskeytechnicalissues,suchasthetheoreticalcalculationmodel,loads,reinforcementandstructureshopdrawingforprovidingthesolutiontothefocalanddifficultpointsinthestructuredesignofU-ShapeGrooveandprovidingsomereferencetothesimilardesign.Researchconclusions:Now,thegeneralandfeasiblemethodtoanalyzetheStructureU-ShapeGrooveisbasedontheelastictheory.Alltheloadsincludingtheircombinationbehaviorshouldbeconsideredreasonably.Thestructureshouldbedesignedasthebeamwithsinglereinforcement,andsomeessentialstructuremeasuresshouldbetakenonthesectionswherethereisstressconcentration.Besidesthestressedsteelbar,thehoop,thedistributionreinforcementandthereinforcedsteelbarforthecontrolsectionareneeded.Inunfavorablegeologicalarea,thestructurecanbeusedwithotherengineeringmeasurestomeetthedesignrequirements.Keywords:U-ShapeGroove;calculationmodel;structuredesign,,U,U,,UU,,U,U(1),,,,,,U,,U1U11.1U,,,U,,,,,U,1,2,,,,,,,,,:n=K0L(1)n(MN/m2);K0,(MN/m3);L(m)1.2U:[4][3](2),,:,q,,q,2UA,,11A0.001HA0.004HU,,,A,,,1.11.3,,,U,,,,,,1.3,3U,,UAB,,,;,,U,,U,U,,41200943UAB,,U,AB22.1U200kPa,:Pzfaz(2)Pz(kPa);faz(kPa),CFG2.2,2,:S=sni=1p0Esi[zii-z(i-1)i-1](3)S(mm);n;p0(kPa);Esii(MPa);zi,zi-1ii-1(m);i-z(i-1),i-1ii-1;sDDC2160km200250km300350km/mm/mm/mm/mm/mm/mm8040502030154020--2052.3U,1.05:Kf=G/KFf(4)Kf;GU;FfU;,0.9;K,0.9,1.0,0.51.05,U,2.033.1U,,:Mfcbx(h0-x/2)(5)M;b;h0;x;fc,U,,,xbh0x2as,,x2as,,,514:Ux2as,AsAs,AsAs,3.2UUU,,,,U,44U4,,H/32H/3,,,AB,,,()0.15%,15%,250mm,6mm(),U,,,,,4U:(1)U,U(2)U,,(3)U,U(4)U,,,,(5),U(6),,,U,,U,,,U,,UU,,:[1].[M].:,1994.[2].[M].:,2005.[3].[M].:,2006.[4]GB50012002,[S].[5].[M].:,2007.()6120094