静止侧压力系数的确定

(福建省建筑设计研究院350001):ko,:CalculationofCoefficientofLateralEarthPressureatRestYuQiang(FujianArchitecturalDesingandResearchInstitute350001)Abstract:Inthispaper,thestrangephenomenaintheKoconsolidationtestthroughthetheoryofstresshistoryisanalyzed.AndamethodtogetthecoefficientoflateralearthpressureatrestofdifferentkindsofsoilisgivenKeywords:Coefficientoflateralearthpressureatrestoverconsolidationpreconsolidtionpressure,,Ko,,,,,,,,Ko,,Ko,Ko,,Ko,,Ko,1,,,,,,Ko,,,AB,,,BC,,,BPc,,!∀,Pc,Ko1,,PcPo,Ko,KoBC,,AB,,,Ko,Ko=A0/#1+tan,PcP0,Ko,,,Ko1KoKo,Ko,Ko,,1KoJCY,JS-1KYY-2,,0.01mm,,,Ko,,Ko,,,,1%kg/cm3%%%9811455.566.51.602.681.78953.130.023.11.58099.698177526.643.21.782.691.16442.827.715.11.02699.899004625.544.11.762.681.19448.229.019.20.78699.099004731.423.72.002.640.63326.916.810.10.68398.09909797.175.31.532.652.03666.939.727.21.30998.0Ko2kPa12.52537.55075100150200300400500kPa0361121295081126174221Ko00.120.160.220.280.290.330.410.420.440.44kPa-8-6-5519346092131184228Ko-0.64-0.24-0.130.10.250.340.40.460.440.460.46∃23990979(%),2Ko,,Ko,Ko,Ko,,Ko:1,::c=-17kpaKo=0.499;:c=-12kpaKo=0.462,,,Ko02,A0,,,,Ko,,,,,,,,,,,A00,,Ko,,,KoKo,,,,,,,,,,,,,,Ko,Ko,Ko,,Ko,Ko,:990979:97097923842000(70),,,,,Ko,,Ko,Ko1.正常固结土静止侧压力系数的确定,,2,,Ko,,,,,,,Ko,Ko,Ko,Ko,,Ko100kPa500kPaKo=0.482,k=0.481,KoKo,Ko2超固结土静止侧压力系数的确定Ko,,,Ko,,,,,,,,,(1),,13,Ko,KoKo,,,PcKo,Pc,Ko,,Pc,Ko,Pc,Ko,,(Ko),Ko,1,AB(0A),BC,Pcp0Ko,Ko,BCKo,Pc,Po,AB4KoPc,,,498175526.6Ko,:1.Ko(0,0)2.KoB3.B,A,ABCKo4.poABC,,3Ko,,,,Ko(),Ko,Ko,,,,Ko,,!(k0,∀,,,k0,Ko,,,3kPakPaKoKoKo1Ko2Ko9811455.53.8521.370.3720.4830.5260.5930.50899175526.61906003.160.300.5801.1841.0040.46599004625.51886403.400.4240.6851.3151.2050.48999004731.52358003.400.3560.4660.7320.8570.4329909797.146781.700.4810.524,99004731.5mKo,1,:12.525501001502003004005006008001000120014001600kPa,1002008001400kPa0,0.0790.1350.3500.356,,,,!Ko∀,,,Ko,,,Ko,,,,,,0.762-0.8130.769,3981145(1)Ko=0.526,,,,Ko,Ko=(#3+u)/(#1+u),Ko,,,5.5,0.5,kw=0.883,Ko0.781,,Ko,Ko,KoKo,koR=Ko&OCRn,n=0.54&10-IP/281--∋,ORC,,Koko=0.19+0.233lgIp--(,3∋(,,,,,,Ko,Ko,,,,Ko,;,,,Ko,,Ko,,;,,,,;Ko,119872(SL237-1999)3852000(70)