合肥市岩土体工程特征及地基划分

18618(6):694698199912ChineseJournalofRockMechanicsandEngineeringDec.,1999(230009),,,,,TU521.31,,,1050m,282m,,,1,,,1020m,,2540m,60m[1],,(12)22.1,21Table1Thedivisionoflandformsöm50205025,,18401015(Q3),(Q4)12185(Q4),914515351020,,199928,1999318:,47,,1975,,1.2.3.4.5.6.7.8.9.12Fig.1Geologicalcross2sectionattheOutanggen2Meitunoverpass,1600m;,3000m;,300m,,1020m,,,810m,1820m,40m,15m,f0=250kPa[2]2Table2EngineeringgeologicalcharaterisitcsofbedrocksCökNm-3RöMPaEöGPaME1l23.42.8(13)14.0K2d29.029.4147.3K2z24.723.319.0(1520)3.4(24)39.518.30.250.24K1x23.622.820.1(1922)4.6(35)J3z26.353.7(4070)17.80.22:2.2(1),,[35],,,,810m(2),,,,,,,1030m,[6](3),,,20m,30m,,,(4),,,,(,),,1020m(5),35m,,(6),,35m,10m,,,[79],,,3596186.3Table3Physicalandmechanicalindexofsoilswö%ökNm-3eWLö%IpILa1-2öMPa-1cökPaUö()EsöMPaf0ökPa19.522.70.5524.68.40.4070.0922.731.2915.520.831038024.221.220.220.40.700.6143.829.921.612.60.0930.3260.080.1278.952.021.9724.7715.022.015.0-18.528045030038024.622.721.319.920.120.40.710.650.6041.931.524.820.413.68.30.1580.3650.5970.140.150.1268.151.624.919.9623.1829.599.515.58.5-14.08.0-12.520028020026020025026.121.819.520.40.750.6129.025.011.58.70.5470.6570.220.1925.225.124.6531.185.07.55.59.410015011018023.719.90.6934.215.00.3320.2148.124.165.57.012018029.519.00.8432.113.10.7910.2630.824.875.57.51202003,,,,,É,Ê,Ë,Ì;15m,A,B,,,(4),24Table4Foundationdivsionanditscharacteristicsömf0ökPaEsöMPaÉIAIB1515280™45015.0™22.0™,10%5.010m,,,()ÊÊAÊB15171517200™2808.0™15.0™10%,,,20%2.05.0m,16ËËAËB15171517120™2005.5™10.0,10%15%1.02.0m,ÌÌAÌB151570™1202.5™5.5,,1.02.0m,,3.1É(),,,,10m,ÉAÉBÉA,1015mÉB,15m,69619991.2.3.4.()5.2Fig.2FoundationdivisionofHefeiCity3.2Ê()ÊA,,,,,25m,,1517m,,ÊB,17m,,20%,,,,,,3.3Ë()ËA,13m,12m,,,,ËB,,,()(),f0=120200MPa,Es=5.510.0MPa3.4Ì()ÌA,,,12m,ÌB,35m,,f0=80100MPa,Es=2.55.5MPa,,,,f0=70120MPa,Es=3.05.5MPa4,,700km2,2ö3;,130km2,14%;;,(),,,,,,,,,,[1,10]71..,1998,(1):11172..19973..19864..1997796186.5..19966..,1999,21(1):1191217..,1994,(1):1301348,,..,1997,(1):55659..,1999,(6):576310..,1999,18(1):213216ENGINEERINGFEATURESANDFOUNDATIONDIVISIONOFROCKANDSOILMASSESINHEFEICITYWangGuoqiang(HefeiUniversityofTechnology,Hefei230009China)AbstractOnthebasisofmacrogeologicalstudies,studiesonproperties,distributionandengineeringgeo2logicalcharacteristicsofrocksandsoilsinHefeiCityareundertaken.Accordingtothetopography,geomor2phology,thicknessofQuaternaryoverburdensaswellasengineeringpropertiesofrocksandsoils,thefoun2dationsoilsinHefeiCityareclassifiedintobest,better,mediumtoworsesiteareas.Engineeringgeologicalcondition,suitabilityforstructuresandfoundationbearingcapactiyareevaluatedforeachsitearea.Keywordsengineeringgeologicalcharacteristics,divisionfoundationbearingcapacity,HefeiCity8961999