公路桥涵地基与基础设计规范-JTGD63-2007-探讨

36,220114HighwayEngineeringVo.l36,No.2Apr.,2011[]20100920[](1973),,,,,(JTGD63-2007)(,330013)[]2007(JTGD632007),(JTJ024-85),,[];;[]U443.16[]A[]16740610(2011)02015304DiscussonCodeforDesignofGroundBaseandFoundationofHighwayBridgesandCulvertsCHENDanhua(CollegeofCivilEngineeringandArchitecture,EastChinaJiaotongUniversity,JiangxiNanchang330013,China)[Abstract]MinistryofCommunicationsissuedCodeforDesignofGroundBaseandFoundationofHighwayBridgesandCulverts(JTGD632007),whichwasemendedandperfectedonthebasisofCodeforDesignofGroundBaseandFoundationofHighwayBridgesandCulverts(JTJ02485).Thepaperdiscussedinterrelatedupdateandinnovation.Atthesametime,theauthorputsomesuggestionsandopinionsforproblemexistedinthenewcriterion.Thepurposeisbetterlyperfectnewcriterion.[Keywords]groundbaseandfoundation;bridgesandculverts;criterion[1](JTGD632007)20079,200712185[2](JTJ02485),185,;;[3]-[7];[8];[9],1.1设计方法的更新(GB/T50283-1999),2004(JTGD60-2004)(JTGD622004),,,(JTJ02485),,,2007,198520,[10]36,(JTGD602004):():r0Ssd=r0mi=1rGiSGik+raSak+11SQ1k+ni=22jSQjk(1)SGikSak,11SQ1k2jSQjk,(JTGD602004)1.0:Ssd=mi=1SGik+nj=11jSQjkRsd(2),1j1.0(JTGD602004),(2)1j,0.7,1.0,0.75,0.8,1.01.2墩台基础的沉降计算,85::s=sni=1P0Esizii-zi-1i-1(3):P0;Esii,;s;ii-1ii-1zizi-1ii-1,,,,,,,,hi04b(b),,,,11Figure1Settlementcalculationinlayersoffoundationbasess,P0Es,s85,85(0.1);,z0.025znz,,851m,,,1542:(JTGD632007)22.1关于软弱下卧层承载力的验算4.2.6:,Pz=1(h+z)+(P-2h)R[fa](4):[fa],3.3.43.3.5,[fa],3.3.43.3.53.3.4,[fa]:[fa]=[fa0]+k11(b-2)+k22(h-3)(5):h,,();k1k2,;1;,;2,(5)[fa],,4.2.6,[fa],(5),:[fa]=[fa0]+k11(b-2)+k22(h+z-3)(6):[fa]h+z;[fa0],3.3.3-1~3.3.3-7;k1k2,3.3.4;1,;2;,,,;,;z;bh3.3.4,,()h+z2.2关于群桩作为整体基础的计算R,(),2acde,::P=rl+rh+BLrhA+NA[fa](7),N,BLrhA,,4.3.4~4.3.7,,4.3b,P0,32Figure2Calculationofpilegroupasmonolithicfoundation3Figure3averageadditionalstresscoefficient3,15536,,,1.0,,,[][1]JTGD63-2007,[S].[2]JTJ024-85,[S].[3].[J].,2009,24(1):97-100.[4],,.[J].,2007,32(1):1-4.[5],,.[J].,2009,(5):47-52.[6],.[J].,2007,29(4):87-90.[7],,.[J].,2009,(6):50-51.[8],,.[J].,2009(5):13-16.[9],,.[J].,2008(8):74-80.[10].[M].:,2003.(上接第143页)32PDCA,,1h,,,,,,e.QC,400m,13,97,94%,4QC,PDCA,QC,,,9370%9794%,,,,:QC,,,;QC,,;QC,,QC,,,,[][1],.[M].:,2000.[2].[J].,2008,(2).[3]JTGF302003,[S].[4],.[M].:,2006.[5],.[M].:,2003.156