地基基礎(chǔ)檢測 技術(shù) Compressive Strength Testing of Core Sample for Foundation Testing Technology-芯 樣抗壓強度檢86課件講解

地基基礎(chǔ)檢測技術(shù)芯樣抗壓強度檢測

CompressiveStrengthTestingofCoreSampleforFoundationTestingTechnology芯樣試件的截取與加工

CuttingandProcessingofCoreSamples01芯樣試件抗壓強度試驗

Compressivestrengthtestofcoresamples02芯樣試件的截取與加工

CuttingandProcessingofCoreSamples0101芯樣試件的截取與加工

CuttingandProcessingofCoreSamples磨平法

Levelingmethod補平法

Complementarylevelingmethod樣品標(biāo)記

Samplemarking切割加工

CuttingandProcessing端面修整

Endfacefinishing尺寸測量

Dimensionalmeasurement項目名稱/樁號/孔號/

Projectname/PileNo./BoreholeNo./芯樣編號/取樣深度/

CoresampleNo./Samplingdepth/芯樣名稱/取樣時間/取樣人

Nameofcoresample/Samplingtime/Samplingperson芯樣試件的截取與加工

CuttingandProcessingofCoreSamples1.截取混凝土抗壓芯樣試件

1.Thecuttingofconcretecompressivecoresamples＜10m10m~30m＞30m每孔應(yīng)截取2組芯樣

2setsofcoresamplesshallbetakenfromeachhole每孔截取3組芯樣

3setsofcoresamplesshallbetakenfromeachhole每孔截取不少于4組芯樣

Atleast4setsofcoresamplesshallbetakenfromeachhole芯樣試件的截取與加工

CuttingandProcessingofCoreSamples等間距截取

Equidistantinterception上部芯樣

Coresampleofupperpart中間芯樣

Intermediatecoresample下部芯樣

Coresampleoflowerpart不宜大于1倍樁徑或超過2m

Itshouldnotbegreaterthan1pilediameteror2m不宜大于1倍樁徑或超過2m

Itshouldnotbegreaterthan1pilediameteror2m1.截取混凝土抗壓芯樣試件

1.Thecuttingofconcretecompressivecoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples缺陷位置能取樣時，應(yīng)截取1組芯樣進行混凝土抗壓試驗。

Takeonesetofcoresamplestoperformconcretecompressivetestifsamplingisallowablefromadefectivelocation.缺陷部位

Defectiveparts芯樣試件的截取與加工

CuttingandProcessingofCoreSamples蜂窩麻面、溝槽等缺陷部位

Honeycombpits,grooveandotherdefectiveparts

較正常膠結(jié)的混凝土芯樣強度低

islowerthanthatofnormallycementedconcretecoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples在其他孔的該深度處，截取1組芯樣進行混凝土抗壓強度試驗。

Atthatdepthinotherholes,1setofcoresamplesweretakenforconcretecompressivestrengthtest.缺陷部位

Defectiveparts

鉆芯孔數(shù)大于1個

Morethan1numberofthecoredrillinghole芯樣試件的截取與加工

CuttingandProcessingofCoreSamples在保證結(jié)構(gòu)承載能力的前提下，減少加固處理費用。

Onthepremiseofensuringthebearingcapacityofthestructure,thecostofreinforcementtreatmentshallbereduced.強度可能不滿足設(shè)計要求

Strengthmaynotmeetthedesignrequirements

鉆芯孔數(shù)大于1個

Morethan1numberofthecoredrillinghole存在蜂窩麻面、溝槽、空洞等缺陷

Defectssuchashoneycombpits,grooveorcavity芯樣試件的截取與加工

CuttingandProcessingofCoreSamples2.截取巖石芯樣

2.Interceptionofrockoresamples≈1m在接近樁底部位1m內(nèi)截取巖石芯樣。

Rockcoresamplesshallbetakenwithin1mofthepilebottom.樁底持力層為中、微風(fēng)化巖層且?guī)r芯可制作成試件

Thebearingstratumatthepilebottomisofmoderatelyandslightlyweatheredrockstratum,andtherockcorecanbemadeintotestpiece芯樣試件的截取與加工

CuttingandProcessingofCoreSamples1m范圍內(nèi)難以截取3個完整芯樣

Itisdifficulttotake3completecoresampleswithin1m原規(guī)范中關(guān)于截取巖石芯樣試件數(shù)量為“一組3個”的要求....…

Therequirementinthepreviousspecificationthatthenumberoftestpiecesforrockcoresamplesshallbe"agroupof3".......單個巖石芯樣：至少是其直徑的2倍

Individualrockcoresample:atleast2timesitsdiameter2.截取巖石芯樣

2.Interceptionofrockoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples各分層巖面取樣

Samplingofeachstratifiedrocksurface

注意

Notes為保證巖石天然狀態(tài),擬截取的巖石芯樣應(yīng)及時密封包裝后浸泡在水中,避免暴曬雨淋,特別是軟巖。

Inordertoensurethenaturalstateoftherock,therockcoresamplestobeinterceptedshallbesealedandpackedintimeandsoakedinwatertoavoidexposuretothesunandrain,especiallysoftrock.2.截取巖石芯樣

2.Interceptionofrockoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples3.加工芯樣

3.Processingofcoresamples應(yīng)采用雙面鋸切機加工芯樣試件，鋸切過程中應(yīng)淋水冷卻金剛石圓鋸片。

Adouble-sidedsawingmachineshallbeusedtoprocessthecoresample,andthediamondcircularsawbladeshallbecooledbysprayingwaterduringsawing.芯樣試件的截取與加工

CuttingandProcessingofCoreSamples

芯樣補平

Coresampleleveling水泥砂漿(或水泥凈漿)

Cementmortar(orcementpaste)厚度≤5mm

Thickness≤5mm硫磺膠泥(或硫磺)厚度≤1.5mm

Sulphidemastic(orsulfur)thickness≤1.5mm3.加工芯樣

3.Processingofcoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples4.測量芯樣試件的幾何尺寸

4.Measurementofgeometricdimensionsofcoresamples平均直徑

Averagediameter平整度

Flatness芯樣高度

Coresampleheight垂直度

Verticality芯樣試件的截取與加工

CuttingandProcessingofCoreSamples測量芯樣高度

Measurementofcoresampleheight4.測量芯樣試件的幾何尺寸

4.Measurementofgeometricdimensionsofcoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples測量芯樣直徑

Measurementofcoresamplediameter4.測量芯樣試件的幾何尺寸

4.Measurementofgeometricdimensionsofcoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples測量芯樣垂直度

Measurementofcoresampleverticality4.測量芯樣試件的幾何尺寸

4.Measurementofgeometricdimensionsofcoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples測量芯樣平整度

Measurementofcoresampleflatness4.測量芯樣試件的幾何尺寸

4.Measurementofgeometricdimensionsofcoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples出現(xiàn)以下情況的試件不得進行試驗

Testpiecesshallnotbetestedif有裂縫或有其他較大缺陷

Cracksorothermajordefects含有鋼筋

Containreinforcement高度<0.95d

Height<0.95d高度>1.05d

Height>1.05d4.測量芯樣試件的幾何尺寸

4.Measurementofgeometricdimensionsofcoresamples芯樣試件的截取與加工

CuttingandProcessingofCoreSamples出現(xiàn)以下情況的試件不得進行試驗

Testpiecesshallnotbetestedif直徑相差達2mm以上

Diameterdifferenceofmorethan2mm不平整度在100mm長度內(nèi)超過0.1mm

Unevennessexceeding0.1mmin100mmlength不善直度超過2°

Poorstraightnessover2°表觀混凝士粗骨料最大粒徑大于芯樣試件平均直徑0.5倍

Themaximumparticlesizeofcoarseaggregateofapparentconcreteis0.5timesgreaterthantheaveragediameterofcoresample4.測量芯樣試件的幾何尺寸

4.Measurementofgeometricdimensionsofcoresamples芯樣試件抗壓強度試驗

Compressivestrengthtestofcoresamples0102芯樣試件抗壓強度試驗

Compressivestrengthtestofcoresamples1.混凝土芯樣試件的抗壓強度試驗

1.Compressivestrengthtestoftheconcretecoresamples應(yīng)按現(xiàn)行國家標(biāo)準(zhǔn)《混凝土物理力學(xué)性能試驗方法標(biāo)準(zhǔn)》GB/T50081的有關(guān)規(guī)定執(zhí)行。

TherelevantprovisionsofthecurrentnationalstandardStandardforTestMethodofPhysicalandMechanicalPropertiesofConcrete(GB/T50081)shallbefollowed.芯樣試件抗壓強度試驗

Compressivestrengthtestofcoresamples芯樣試件平均直徑小于2倍試件內(nèi)混凝土粗骨料最大粒徑,且強度值異常

Theaveragediameterofthecoresampleislessthan2timesthemaximumparticlesizeoftheconcretecoarseaggregateinthetestpiece,andthestrengthvalueisabnormal抗壓強度試驗

Compressivestrengthtest該試件強度值不得參與統(tǒng)計平均

Thestrengthvalueofthetestpieceshallnotbeincludedinthestatisticalaverage1.混凝土芯樣試件的抗壓強度試驗

1.Compressivestrengthtestoftheconcretecoresamples芯樣試件抗壓強度試驗

Compressivestrengthtestofcoresamples測量抗壓芯樣試件

Measurementofcompressivecoresamples抗壓強度試驗

Compressivestrengthtest數(shù)據(jù)統(tǒng)計、分判定

Datastatistics,sub-determination

以概率論為基礎(chǔ)、用可靠性指標(biāo)度量樁基的可靠度，是比較科學(xué)的評價基樁強度的方法

Thereliabilityofpilefoundationismeasuredbyreliabilityindexbasedonprobabilitytheory,whichisarelativelyscientificmethodtoevaluatethestrengthoffoundationpile1.混凝土芯樣試件的抗壓強度試驗

1.Compressivestrengthtestoftheconcretecoresamples芯樣試件抗壓強度試驗

Compressivestrengthtestofcoresamples芯樣試件抗壓試驗測得的破壞荷載(N)

Failureloadmeasuredbycompressivetestofcoresample(N)芯樣試件的平均直徑(mm)

Averagediameterofcoresample(mm)