路基换填深度的计算与探讨

:10096825(2009)07027303:20081006:(1972),,,,830006毛爱民:结合果霍高速公路软弱地基的特征和工程实际,介绍了计算路基换填深度的方法,强调了路基换填需注意的事项,指出合理的换填深度不仅是路面强度与稳定性的保证,而且能降低工程造价:路基工作区,地基承载力,换填深度:U416.1:A1,,,39,-42,214mm,1.0m,4b(),,2K4811+000~K4816+200,,1.0m,E0=75MPa,11.54cm,6cm,30cm5%,30cm2.1路基工作区分析法1):Za=3P2n(1),Za(),m;P,kN;n(n=0.2;n=0.1);,kN/m3(1),P,Zan=0.1;BZZ100,JN151,P=100.3kN,=19.0kN/m3(1):Za=3P2n=3100.320.119.0=2.97m,,4,,,,,,,,,,,,,,5,,,,,:[1]李开然.景观设计基础[M].上海:上海人民出版社,2003.[2][日]土木学会.道路景观设计[M].章俊华,陆伟,雷芸,译.北京:中国建筑工业出版社,2006.[3]王崇华,张景华.城市道路景观设计[M].沈阳:辽宁科学技术出版社,2002.[4]邵艺超.城市道路的景观设计[J].江苏交通,2003(3):3436.[5]孙英杰,赵文姣,母荣华.公路景观的灵活性设计[J].山西建筑,2007,33(13):267268.[6]韩丽馥.浅谈道路景观设计[J].辽宁省交通高等专科学校学报,2003(5):4344.OnthelandscapedesignfortheurbanroadsZHANGJingLIUYuancaiWANGLingboAbstract:Thepaperindicatesthesignificanceandnecessityofthelandscapedesignforurbanroads,introducestheprinciplesfortheroadlandscapedesign,sumsupthecontentsoftheroadlandscapedesign,andpointsouturbanlandscapedesigncanntonlyincreasetheartistictrafficlandscapeandimprovethetrafficecologicalenvironment,butalsorealizethesustainabledevelopmentoftheurbantraffic.Keywords:urbanroads,landscapedesign,trafficenvironment,humanoriented273第35卷第7期2009年3月山西建筑SHANXIARCHITECTUREVol.35No.7Mar.20092):Ze=h12.5E1E0(2),Ze,m;h1,m;E1,MPa;E0,MPa(2),E1,Ze,(Za-Ze):E1=1300MPa;E2=1600MPa;E3=1100MPa;E4=180MPaE1=931.4MPaE0=75MPa(2):Ze=0.72.5931.475=1.92m3)1,:hc=Za-(Ze-h1)-h=Za+h1-Ze-h(3),hc,m;h,m(3):hc=2.97+0.7-1.92-1.0=0.75m2.2地基承载力法,,zk(k1.25),[z]zk(4),[z],kPa;z,kPa;k,k=1.252,P,M(x,z)z,,b:dP=bPdz=2z3Pbb0d(x-)2+z22=Pn(arctgnm-arctgn-1m)-m(n-1)(n-1)2+m2=asP(5),as;n=xb;m=zb(5)z,(4),,[z]=72kPa;=19kN/m3;B=5.6m;L=5.4m;G=300kN:h0=2300195.45.6=1.04m1.0m,,=19kN/m3,1.04m,2.04mz,,,P=192.04=38.76kPaq=1316.06-13P=1338.763.06=164.7kPa,1.0m,1.0m:z=2[0.48(38.76+164.7)-0.476164.7]=38.53kPa[z]z=7238.53=1.871.25,1.0m,1.0m,,,,31),,,,2),,250cm,,3),0cm~30cm0cm~80cm4)4,,,,,,,,,:[1]李瑞.路基软土地基处理施工技术[J].山西建筑,2007,33(13):118119.[2]郭兰英,于晓,纪翠娜.公路土基压实深度的确定[J].路基工程,2006(4):137138.[3]丁进文,薛长武,黄文有.高速公路零填及路堑段路基换填深度的探讨[J].公路与汽运,2004(3):5456.(下转第294页)274第35卷第7期2009年3月山西建筑x=6.72t,,,,(1)20,55t,95%55t97.51%,55t99.84%,()4,1417129:=4.83t,:=4.66tX:fx(x)=121.010exp-12(lnx-1.1551.010)20x:F(x)=x-121.010exp-12(lnu-1.1551.010)2du,:^=1.155,^=1.0105,x=e1.155=3.174t,,KS,,,5,,10t,10t87.48%,94.58%95%,,7.52%,()5WIM,,(),:1):,,2)WIM,(),95%,,95%,(),,3),,:[1]GB/T502831999,公路结构可靠度设计统一标准[S].[2]JTGD602004,公路桥涵设计通用规范[S].[3]JTGB012003,公路工程技术标准[S].[4]陈照全.既有桥梁车辆荷载模型的随机过程模型研究[D].长沙:长沙理工大学硕士学位论文,2002.[5]李广慧,张存超,王东炜,等.高速公路桥梁活荷载参数研究[J].郑州大学学报,2005(1):2628.[6]王磊,张建仁.既有公路桥梁不同车辆荷载连续到达过程模拟[J].中外公路,2008(4):4950.InvestigationofthevehicleaxleloadonChongqingareashighwaybridgeXUJianCHENBinAbstract:BasedononeweeksWIMdataprovidedbyChongqingcityexpresswaydevelopmentCo.Ltd,theauthorcalculatesout7kindsofcommonvehicletype(axletype)aimingatdifferentkindsofvehicletypesappearanceprobability,andgetsloadingfrequencystatistics,curvefitting,functionfittinganddistributionhypothesistestingtogeneralandpartialaxleload,finallydrawsaconclusionthatthegeneralaxleload(vehicleload)ofexistingexpresswaytrafficflowinChongqingcitymeetsthebasicrequirement.Keywords:highwaybridge,liveload,axleload,loaddistribution(上接第274页)CalculationanddiscussionontheroadbedreplacementdepthMAOAiminAbstract:CombinedwiththecharacteristicsandengineeringpracticeofsoftfoundationofGuoHuoexpresshighway,themethodtocalculatefoundationreplacementdepthwasintroduced.Theattentionsinfoundationreplacementwerestrengthened,itpointedoutthatproperreplacementdepthwasnotonlyguaranteeofpavementstrengthandstability,butalsodecreasedengineeringcost.Keywords:foundationworkingarea,roadbedbearingcapacity,replacementdepth294第35卷第7期2009年3月山西建筑