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((),300461):,、。2,,,,。:;;;;:U653.2;TU432:B:1004-9592(2009)05-0042-04AnalysisonPull-outCapacityofSuctionAnchorMiaoDi(TianjinPort(Group)Co.,Ltd.,Tianjin300461,China)Abstract:Themainobjectandmethodstudiedissummarizingtheanalyzingwaysofcarryingcapacityonsuctionanchoronthebasisofresearchingconcernedliteratures.Anewanalyzingmethodofcarryingcapacityisputforwardthroughtheanalysisonsuctionanchor’sfailuremodesinclayandsandysoilinordertomakesomeimprovementsontheexistingbasis.Thenewmethodcanreflectsomemainaffectingfactors.Keywords:suctionanchor;vacuumanchor;pull-outcapacity;bucketfoundation;clay:2009-04-16:2009-08-26:(1982-),,,。、,,[1]。“”,,“”。,,。,,[1,2]。,、、、,。,,,,,[3]。,,。11.1,、λ′、c、。、、(SPT),,。1.2,1,,,。,,,,[3]。,,,PortEngineeringTechnology465200910190Vol.46No.5Oct.2009Total190,。,,;,。,;,[3]。、,,1。1,,T0=πD2c/4;(1)[2],p(z)=3c+λz+Jcz/D。(2)λ;z;c;D;J,J=0.25~0.5。O()。O,,[2]T0L+M0+La乙p(z)(z+s)d(z)-a0乙p(z)(z+s)d(z)=0;(3)(3)a,F[2],F=a0乙p(z)d(z)-La乙p(z)d(z)-T0。(4)1.32。1(),、,[2,4];2(),,,,。、,,[1,2,4]。,。12SIPM,。SIPMR=πD2kfh0乙fd(z)+kpqch乙乙t。(5)D;kf;f;h;kpqc;qch;t()。,,,。:1),,;2),,;3),,。、、、,。,,,,。R=πD(De+Di)h0乙(kfe+kfi)kfsqc(z)d(z)+π(De2+Di2)kpkpsqc(h)4。(6)qc(z)CPT;De;Di;kfe;kfi;kfs;kpqc(z);kps;z;h。22.12.1.1φ=32°,γS=15.94kN/m3,γ′=5.81kN/m3,3m,2.8m。1),F=Wp+Te+Ti。:Te=0.1γ′L2P;1:543··12:①;②LD,,L/D1.0,。,(7),0;0,VV000=1+1.2HHD00-2.2HHD002。(8)V;V0;H;HD。(8),,2。2,1/2,;80%,1/2((7))。,,;,,,1,。。2.22.2.1φ=0°,c=6.2kPa,γS=14.35kN/m3,γ′=4.22kN/m3,7m,8m,40m。1),,F=WP+Fe-Fi+Te+Ti-Tn。(9)WP;Fi=ρwgh2Asi、Fe=ρwgh1Ase、;Ti=αCμAsi、Te=αCμAse、,α,0.36,Cμ;Tn=ρtip(Ae-Ai),0,,ρtip。,Fe≈Fi;φ=0°,Cz=γ′ztanφ+c=c,Cμ=c=6.2kPa;Asi≈Ase=πDL。(9)F=784.9kN(Wp)。2),,F=WP+Ws+Fe+Te+Ts-Tn。(10)Ws;Ts=σiAi;。Ws=1272.6kN;Te=392.5kN;Ts=238.5Ti=γ′AL-γ′A2ktP-exp-ktLPA00≈≈,kt=0.11,A。Te=42.0kN,Ti=196kN,F=336kN(Wp)。2)0,,V0(准=Ψ)=4.26L/00d0.75Aσ′vbottomtan准。(7)σ′vbottom=γ′L;准;L/d。V0=284kN(Wp)。2,,16%。2.1.22,,2,12。1/m3m/kN4m/kN5m/kN6547.71021.01738.17642.91150.21902.68748.71297.42090.52/m3m/kN4m/kN5m/kN61078.61545.52042.671412.62024.02675.181784.62556.83379.424644··kN;Fe=15078.3kN;F=16981.9kN(Wp)。3),,[4]F=Wp+Ws+Fe+Te(NCμ-q)Ai。(11)N,,,6;q;。,[4],-ptopAi+αCμAsi=Ws+(NCμ-q)Ai。(12)-ptop;。1/5(78.4kPa)、1/10(39.2kPa)、1/20(19.6kPa),(NCμ-q)Ai2740.0、1232.2、753.9kN。Ws=1272.6kN;Te=392.5kN;Fe=15586.4kN,(12)F21991.5、20483.7、20005.4kN。2.2.23,,3。、,,2。Fe=ρwgh1Ase()。,Fe,,、。4,2。,,,,。、,:1)2,,γ′、L、D3;,3,,,。,,,,Ti2-γ′A2ktP-exp-ktLPA!#$L,(L/D),,。,,。,;,,。(),;,,。,,,。2)22:①,3(、、),。,3,,,。,,。②Fe=ρwgh1Ase,。,Fe,0。(,)。,1,,。:[1],.[J].,2002,17(6):10-14.[2],,,.[J].(),1995,7(1):32-36.[3],,,.[J].,2000,12(Z1):39-42.[4],.[J].,2002,16(2):5-10.:545··
本文标题:吸力锚的抗拔承载力分析
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