基于土拱效应的抗滑桩临界桩间距影响因素研究

105201210JournalofWaterResourcesandArchitecturalEngineeringVol.10No.5Oct.,2012:2012-04-01:2012-04-29:(1987),(),,,艾章婵1,2,窦俊3,周云东1,2,樊胜兴4(1.,210098;2.,210098;3.,210000;4.,210000):,,,,:;;;:TU443:A:16721144(2012)05014304AdvancesonResearchaboutInfluencingFactorsofCriticalSpacingbetweenAnt-islidePilesBasedonSoilArchingEffectAIZhang-chan1,2,DOUJun3,ZHOUYun-dong1,2,FANSheng-xing4(1.KeyLaboratoryofGeomechanicsandEmbankmentEngineeringofMinistryofEducation,HohaiUniversity,Nanjing,Jiangsu210098,China;2.GeotechnicalEngineeringResearchInstitute,HohaiUniversity,Nanjing,Jiangsu210098,China;3.NanjingChengmingConstructionConsultingCo.,Ltd.,Nanjing,Jiangsu210000,China;4.NanjingBranchOfficeofHunanForeignConstructionCo.,Ltd.,Nanjing,Jiangsu210000,China)Abstract:Thereasonableant-islidepilesspacingsettingwouldplayanimportantroleineconomytoensureslopestabi-lity.Accordingtotheapplicatianofsoilarchtheoryinant-islideprojects,theinfluencingfactorsforsoilarchingeffectinant-islidepileengineeringsareintroducedindetail,andtheeffectsoftheinfluencefactorsonthecriticalspacingbetweenant-islidepilesarealsodiscussed.Then,thedifferencesofvariouscalculationalgorithmsareillustratedbypracticalpro-jects,whichcouldprovideaguidingsignificanceforthedesignandconstructioninant-islidepileengineerings.Keywords:soilarchingeffect;ant-islidepile;criticalpilespacing;influencefactor,[1]201227,12104m3,,,,,,,:,,,,,1943Terzaghi[2],,[3-7][8-9][10],,,[11],,[12],,,,1考虑土拱效应的抗滑桩临界桩间距探讨,,,c,,a,b(),h,P,q(P=qh),,S1.1[13],S=2cbhP(1-tan)(1)1.2[14][13],,S:S=2bc(h-1)P(1-tan)-htan(2)1.3[15]:(1);(2);(3),(2):S=ca(1+sin)qcos(1-sin)(3)1.4[16],=45+/2,,,::S4bcsincosq(1-sin)(4):S2bctan(45+/2)q[tan(45+/2)-tan](5),,1.5[17],,,,,,,:S=2a[P+2chtan(45-/2)]Ptan(45-/2)(6)2工程实例对比,,,,[16],,,,,,,14410c60kPa,24,a2m,b3m,h10.5m,P1040.5kN/m,q=Ph=1040.510.5=99.1kN/m,20kN/m3,,11/m1.S=2cbhP(1-tan)c,b,P,h,6.552.S=2bc(h-1)P(1-tan)-htanc,b,P,h,,7.073.S=ca(1+sin)qcos(1-sin)c,a,q,3.214.S4bcsincosq(1-sin)S2bctan(45+/2)q[tan(45+/2)-tan]c,b,q,5.115.S=2a[P+2chtan(45-/2)]Ptan(45-/2)c,a,P,h,11.002.1SP1,,1SP;2SP;34Sq;5SP2.2Sc1,,1~5Sc2.3S1,,5S,1235S;4S2.4Sa1,,35Sa2.5Sb1,,124Sb2.6S1,,1S,S,34,,124,Sb,a;35,Sa,b,5,34,,,,,,,,:(1),;(2),,,3结语,,,:(1)(),(2)1455,:(3),,(4),:[1],.[C]//().:,1998:33-37.[2]TerzaghiK.TheoreticalSoilmechanics[M].NewYouk:JohnWiley&Sons,1943.[3],.[J].,2010,(2):86-88.[4],,.[J].,2010,41(4):471-476.[5],,.[J].,2010,42(4):629-633.[6],,,.[J].,2010,40(3):88-93.[7],.[J].,2005,25(3):275-277.[8],,.[J].,2007,29(10):1477-1482.[9],,.[J].,2008,29(3):817-822.[10],,.[J].,2006,14(1):111-116.[11],,.[J].,2004,12(1):98-103.[12].[J].,2005,27(8):64-67.[13],,.[J].,2001,19(6):556-559.[14],,,.[J].,2010,29(5):121-124.[15],,.[J].,2004,26(1):132-135.[16],,.[J].,2006,31(2):1-4.[17].[J].,2008,22(4):75-79.(上接第84页)3结论及建议,,1/4-,:(1),,(2),,(3),,,:[1],,.h[J].,2010,32(12):49-54.[2]Woo-BumKim.Ultimatestrengthoftube-gussetplateconnectionsconsideringeccentricity[J].EngineeringStruc-tures,2001,23(11):1418-1426.[3]ArchitecturalInstituteofJapan.Recommendationsforthede-signandfabricationoftubularstructuresinsteel[S].1990.[4],.-[J].,2006,36(12):83-85.[5],,.[J].,2004,21(3):155-161.[6].GB6397-86.[S].:,1986.[7].GB/T228-2002.[S].:,2002.[8],.T[J].,2002,35(4):20-24.[9].ANSYS[M].:,1998.14610