地下水对浅基础地基承载力的影响

235200410Vol.23No.5JournalofLiaoningTechnicalUniversityOct.20042003-07-10(1968–)1008-0562(2004)05-0633-0312,3(1.100084;2.,021008;3.,150027)GB5007-2002CTU46AInfluenceofundergroundwateronsubgradebearingcapacityofshallowfoundationHEIRui-wen1,GUOYan-long2,ZHAOChun-xiang31.TsinghuaUnisplendourEnvironmentalProtectionCo.Ltd,Beijing100084,China;2.HighwayReconnoiterDesignInstituteofHulunbeierCity,Hulunbeier021008,China;3.DepartmentofBasicScience,HeilongjiangInstituteofScienceandTechnology,Harbin150027,ChinaAbstractCombiningwithgountrystandardCODEFORDESIGNOFBUILDINGFOUNDATION(GB5007-2002);Thearticleanalysestheinfluenceofsubgradebearingcapacitywhenlevelofundergroundwaterchangewithinthescopeoffoundationbottombelowplasticitydistrict.Thearticlealsoexpressestherelationbetweentheinfluencedegreeandadhesiveforcec,innerfrictionalangle(),upperpartstructure.Thedisadvantageeffectofupperandlowerfluctuationsofthewatertableinwetseasonanddryseasononstabilityofthesubgradeispointedout.Thiskindofeffectwasoftenneglectedintheengineeringdesign.So,thedesignersareexpectedtothinkoverthisdisadvantageeffectadequatelyandensurethesafetyandstabilityofupperstructureaccordingtotheeffect.Keywordsadhesiveforceinnerfrictionalangleundergroundwaterlevelsubgradebearingcapacityeffectivedensity[1][2]µ=0.5(GB5007-2002)abdmckfMrbMrdMc=++23634r()rm()ckMbMdMcb6m6md[3]crZmaxhD41B1/4Zmax=B/4[4]1B=4mD=2m2B=20mD=10m(1bh=0)(1ah=D)2m1dD+ZmaxhDf1Zmax(1chD+Zmax)f2c=03060kPa[5]r=20kN/m3r1=10kN/m3r1/r=0.521(c=0)14Fig.14kindsofwaterlevelofundergroundwateraZmaxDDZmaxDhDbZmaxDhD+ZmaxcZmaxDD+ZmaxhDd563511111110.52()bdmbdmbdmbdmMrbMrdMrbMrdffMrbMrdMrbMrd++===++r1/r=0.523c4()[6][1].[M].:,1989.[2].[M].:1995.[3][S].GB5007-2002.[4].[M].:,1998[5].[M].:,2001.[6]H·F·.[M].:,1983.º(b)c=0c=0c=30c=30c=60c=60050102030400.20.40.60.81.0f1/fc=0c=30c=30c=60c=60º(a)050102030400.20.40.60.81.0f1/f2Fig.2theinfluenceofsubgradebearingcapacityfoundationinflexibilityplasticitysubstanceByundergroundwaterc=0c=0c=30c=30c=60c=60º(c)2m050102030400.20.40.81.0f1/f0.6