综合物探技术在跨地铁建筑场地地基勘察中的应用-占文锋

20154447CONSTＲUCTIONTECHNOLOGY55DOI10.7672/sgjs2015070055*1121．1000422．1001424、、。、。、。。TU412A1002-8498201507-0055-05ApplicationofComprehensiveGeophysicalProspectingintheBuildingFoundationAboveMetroZhanWenfeng1WangQiang1HeXuehai21．DepartmentofArchitecturalEngineeringBeijingPolytechnicCollegeBeijing100042China2．BeijingShieldGeosciencesTechnologyCo．Ltd．Beijing100142ChinaAbstractTheplannedbuildingisclosedtooroverspannedMetroLine4ofBeijing．Tofindoutthecharacteristicsoffoundationsoilthedistributionofundergroundpipelinesthemetrotunnellocationandburieddepthetcthecomprehensivegeophysicaltechniqueswereused．Thehigh-densityresistivitymethodandgroundpenetratingradarGPＲwereusedtodetectthemetrotunnellocationburieddepthandwidthbothobtainedthesimilarresultsbuttherewaserrorduringinversingtheburieddepthandthecausesoftheerrorweredifferent．BasedonpipelinedetectorandcombinedwiththeGPＲandfieldinvestigationthedistributionmapsoftheundergroundpipelinesweredrew．Thepulsationmeasurementtechnologywasusedtoobtainthepredominantperiodandtheamplitudeatdifferentpositionsanddepthduringdifferenttimesthecomparativeanalysisshowedthatthemetrorunningevokedthedynamicresponseonthefoundation．Theshearwavevelocitymeasurementwasusedandcalculatedtheequivalentshearwavevelocitythefoundationsoillayersandthefoundationtypewereclassedandtheruleofthevibrationtransmittedinthefoundationwasdiscussed．Keywordssubwaystunnelsfoundationsinvestigationradardetection*[e-mail]2014-02-240、、。、、1。、、。。、2。、、5644。14—16、266m1。4、、。1Fig．1Thesiteandundergroundpipelines、、44、、、、、。22.13。、4。。、5-6。4。2.2E60CN1G1G22。24m0.5m48。Ｒes2dinv2。Ω·m。2G1G2Fig．2IsolineofresistivityofG1G2testingline30m、、。。2a、12～14mG11＞3500Ω·m。、2～3m。2bG22。、210m6m2。6～8m6160mm7。38-10、、2015No．757。3.16～10。、、、、11-12。。Sir-30001D1D22。D112mD213m。85MHzＲADAN6.632。。3D1D2Fig.3GroundpenetratingradarforD1D2testingline、。、。。34～6m8～10m。mark。、、。3.2、、、、。、、、13。、。、、、、。。LD8000Zond-12400MHz《》CJJ61—2003《》DB11/T316—2005。4。3。4Fig．4Undergroundpipelinedetectedbygroundpenetratingradar。①5844。②。。③。13。1。44.114-161。1、Table1Vibrationtestingresults/s/cm/s/cm90.180.030.120.07330.260.020.210.01390.20.060.190.020.210.040.180.0390.110.070.110.04330.180.410.120.05390.10.150.120.040.130.210.120.044。2112009333911m。42min16。2000121。《》GB50011—2010《》GB/T50269—97。、15。4.2①0.13s0.12s0.21s0.18s②5、Fig．5Comparisoncurvesofamplitudeandcycleindifferenttimeandposition1/T③。、。。517。。933393233266228m/s。《》GB50011—2001Ⅲ。5a。。5b。。。61、、2015No．759。、、。2、、。3、。。43。Ⅲ。。20131、“”。1．J．2013101117-122．2．J．2005217-21．3．J．2001254306-311315．4．J．201151135-38．5．J．201075599-602．6．J．201076674-678．7．4J．2012434-36．8．J．199820365-68．9．J．2012191273-74．10．J．2012S1760-763．11．J．20131545．12．J．200811985-88．13．J．200524260-263．14．J．201127346-50．15．J．200931525-28．16．J．2010S11-11．17．3J．201234S2215-220．《》、、。、。CECS《》CECS392∶2014201551。、、、。、、、、、、、7、、、、、、、、、9。、、、。“”2015-04-03