建筑結(jié)71課件講解

建筑結(jié)構(gòu)ArchitecturalStructures混凝土強(qiáng)度檢測ConcreteStrengthInspection4.4柱構(gòu)件設(shè)計(jì)ColumnDesign目錄

CONTENTS儀器設(shè)備介紹IntroductiontoInstrumentationEquipment1率定Calibration2回彈Rebound4測區(qū)布置TestAreaLayout3材料的質(zhì)量Thequalityofmaterials回彈儀被廣泛應(yīng)用在現(xiàn)場隨機(jī)抽檢構(gòu)件。Reboundtestersarewidelyusedinrandomon-siteinspectionsofstructuralcomponents.掌握混凝土強(qiáng)度Determinethestrengthoftheconcrete掌握澆筑整體水平Determinetheoveralllevelofitscasting儀器設(shè)備介紹IntroductiontoInstrumentationEquipmentPARTONE儀器設(shè)備介紹IntroductiontoInstrumentationEquipment印章、印油Stampsandinkpads標(biāo)稱能量為2.207J的回彈儀Areboundhammerwithanominalenergyratingof2.207J儀器設(shè)備介紹IntroductiontoInstrumentationEquipment標(biāo)準(zhǔn)鋼砧Astandardsteelanvil便攜式微型標(biāo)準(zhǔn)鋼砧Aportableminiaturizedstandardsteelanvil儀器設(shè)備介紹IntroductiontoInstrumentationEquipment除塵刷Adustingbrush吹氣槍Anairblowinggun儀器設(shè)備介紹IntroductiontoInstrumentationEquipment回彈儀的校準(zhǔn)周期不宜超過半年；Thecalibrationperiodforareboundhammershouldnotexceedsixmonths.檢查校準(zhǔn)周期CheckCalibrationInterval儀器設(shè)備介紹IntroductiontoInstrumentationEquipment鋼砧的校準(zhǔn)周期不宜超過2年。Thecalibrationperiodforsteelanvilsshouldnotexceedtwoyears.檢查校準(zhǔn)周期CheckCalibrationInterval儀器設(shè)備介紹IntroductiontoInstrumentationEquipment不能使用超出校準(zhǔn)周期內(nèi)或者已經(jīng)標(biāo)識為停用的設(shè)備進(jìn)行檢測。Itisprohibitedtouseequipmentthathasexceededitscalibrationperiodorhasbeenmarkedasout-of-servicefortestingpurposes.檢查校準(zhǔn)周期CheckCalibrationInterval率定CalibrationPARTTWO率定Calibration每次回彈檢測前、后；Beforeandaftereachreboundtest.回彈儀在現(xiàn)場測試擊次數(shù)超過3000次；Whenthenumberofimpactsonthereboundhammerexceeds3000timesduringon-sitetesting.率定結(jié)果應(yīng)有記錄。Theresultsofstandardcalibrationshouldbedocumented.率定Calibration標(biāo)準(zhǔn)率定Standardcalibration復(fù)核率定Standardcalibration標(biāo)準(zhǔn)鋼砧Astandardsteelanvil便攜式微型標(biāo)準(zhǔn)鋼砧Aportableminiaturestandardsteelanvil鋼砧選用SelectionofSteelAnvil率定Calibration標(biāo)準(zhǔn)率定試驗(yàn)規(guī)定Standardcalibrationtestspecifications鋼砧表面應(yīng)平整、干燥、清潔，并應(yīng)穩(wěn)固平放在剛度較大的物體上。Thesurfaceofthesteelanvilshouldbeflat,dry,clean,andsecurelyplacedhorizontallyonarigidobjectwithsubstantialstiffness.率定Calibration標(biāo)準(zhǔn)率定試驗(yàn)規(guī)定Standardcalibrationtestspecifications分四個方向進(jìn)行，每個方向彈擊前，彈擊桿應(yīng)旋轉(zhuǎn)90度。Thecalibrationtestshouldbeconductedinfourdirections,andbeforestrikingineachdirection,thestrikerrodshouldberotatedby90degrees.率定Calibration標(biāo)準(zhǔn)率定試驗(yàn)規(guī)定Standardcalibrationtestspecifications回彈值應(yīng)取連續(xù)向下彈擊三次的穩(wěn)定回彈結(jié)果的平均值，每個方向的回彈平均值均應(yīng)為80±2。Thereboundvalueshouldbetheaverageofthestablereboundresultsobtainedfromthreeconsecutivedownwardimpacts，andthereboundaverageineachdirectionshouldbe80±2.率定Calibration標(biāo)準(zhǔn)率定試驗(yàn)規(guī)定Standardcalibrationtestspecifications合格Qualified繼續(xù)使用Continuetobeused率定Calibration標(biāo)準(zhǔn)率定試驗(yàn)規(guī)定Standardcalibrationtestspecifications不合格Notqualified保養(yǎng)Maintenance重新率定Re-calibrating混凝土結(jié)構(gòu)檢測Concretestructuretesting測區(qū)布置TestAreaLayoutPARTTHREE測區(qū)布置TestAreaLayout測區(qū)布置TestAreaLayout

測區(qū)宜布置在構(gòu)件的兩個對稱的可測面上。Testareasshouldbearrangedontwosymmetricmeasurablesurfacesofthecomponent.

測區(qū)宜布置在構(gòu)件的兩個對稱的可測面上。Testareasshouldbearrangedontwosymmetricmeasurablesurfacesofthecomponent.每個構(gòu)件的測區(qū)數(shù)不應(yīng)少于10個。Thenumberoftestareasforeachcomponentshouldnotbelessthanten.

測區(qū)布置TestAreaLayout

不能布置在對稱的可測面上時，也可布置在同一可測面上。Whenitisnotpossibletoarrangeonasymmetricalmeasurablesurface,theycanalsobearrangedonthesamemeasurablesurface.測區(qū)布置TestAreaLayout

測區(qū)應(yīng)布置在構(gòu)件上具有代表性的區(qū)域。Testareasshouldbeplacedinrepresentativeregionsofthecomponent.在構(gòu)件的重要部位及薄弱部位也應(yīng)布置測區(qū)，并應(yīng)避開預(yù)埋件。Testareasalsobeingarrangedatimportantandweakpartsofthecomponent,andcareshouldbetakentoavoidpre-installedembeddedparts.測區(qū)布置TestAreaLayout<0.04m2測區(qū)的面積不宜大于0.04m2。Thetestareashouldnotexceedanareaof0.04m2.測區(qū)布置TestAreaLayout相鄰兩測區(qū)的間距不應(yīng)大于2m。Thespacingbetweenadjacenttestareasshouldnotexceed2m.＜2m＜2m＜2m＜2m測區(qū)布置TestAreaLayout<0.5m,>0.2m<0.5m,>0.2m<0.5m,>0.2m<0.5m,>0.2m<0.5m,>0.2m非節(jié)點(diǎn)部位Non-nodepart測區(qū)與構(gòu)件端部或施工縫邊緣的距離不宜大于0.5m，且不宜小于0.2m

。Thedistancebetweenthetestareaandtheendofthestructuralcomponentorconstructionjointshouldnotbegreaterthan0.5m,anditisalsonotadvisabletobelessthan0.2m.測區(qū)布置TestAreaLayout<4.5m<0.3m某一方向尺寸不大于4.5m

且另一方向尺寸不大于0.3m時：Whenthedimensionofonedirectionontheinspectionsurfaceoftheinspectedcomponentisnotgreaterthan4.5mandthedimensionintheotherdirectionisnotgreaterthan0.3m.測區(qū)布置TestAreaLayout每個構(gòu)件的測區(qū)數(shù)量可適當(dāng)減少，但不應(yīng)少于5個。Thenumberoftestareasforeachcomponentcanbeappropriatelyreduced,butshouldnotbelessthan5.

測區(qū)布置TestAreaLayout>18m當(dāng)受檢構(gòu)件跨度大于18m時，每個構(gòu)件的測區(qū)數(shù)不應(yīng)少于20。Whenthespanoftheinspectedmemberexceeds18m,thenumberoftestareasforeachcomponentshouldnotbelessthan20.測區(qū)布置TestAreaLayout當(dāng)受檢構(gòu)件跨度大于18m時，每個構(gòu)件的測區(qū)數(shù)不應(yīng)少于20。Whenthespanoftheinspectedmemberexceeds18m,thenumberoftestareasforeachcomponentshouldnotbelessthan20.1234567891011121314151617181920測區(qū)布置TestAreaLayout分段澆筑成型的大型構(gòu)件，按澆筑段為單位布置測區(qū)。Whenthememberisalarge-scalecomponentcastinsections,testareasshouldbearrangedaccordingtothecastingsegments.澆筑段Castingsegment每一澆筑段布置測區(qū)數(shù)不應(yīng)少于10個。Foreachcastingsegment,thenumberofarrangedtestareasshouldnotbelessthan10.測區(qū)布置TestAreaLayout彈擊時產(chǎn)生顫動的薄壁及小型構(gòu)件應(yīng)進(jìn)行固定。Thin-walledandsmall-sizedcomponentsthatvibrateduringimpactshouldbesecured.測區(qū)應(yīng)標(biāo)有清晰的編號。Testareasshouldbemarkedwithclearnumbers.Thenumberoftestarea:

2測區(qū)布置TestAreaLayout繪制測區(qū)布置示意圖描述外觀質(zhì)量情況。Testareasshouldhavealayoutdiagramdrawntodescribetheappearancequalityconditions.回彈法檢測砼抗壓強(qiáng)度記錄表ReboundMethodTestRecordSheetforConcreteCompressiveStrength測區(qū)布置TestAreaLayout回彈ReboundPARTTHREE回彈Rebound檢測面應(yīng)為混凝土原漿面。Theconditionofthetestsurfaceshouldbechecked.清潔、干燥、平整Clean,dry,smooth回彈Rebound檢測面應(yīng)為混凝土原漿面。Theconditionofthetestsurfaceshouldbechecked.疏松層、浮漿、油垢、涂層以及蜂窩、麻面Looselayers,laitance,oilstains,coatings,honeycombs,pittedsurfaces回彈Rebound檢測面應(yīng)為混凝土原漿面。Theconditionofthetestsurfaceshouldbechecked.必要時采用砂輪磨除表面雜物并清理粉末。Whennecessary,useabrasivewheelstoremovesurfacedebrisandcleanuppowder.回彈Rebound表面已經(jīng)裝飾、粉刷的構(gòu)件，應(yīng)將裝飾、粉刷層清除干凈，不可將裝飾、粉刷層當(dāng)混凝土原漿面進(jìn)行檢測。Forcomponentsthathavebeendecoratedorpaintedonthesurface,thedecorationandpaintlayersshouldbethoroughlyremoved;theymustnotbetreatedastheoriginalconcretesurfacefortestingpurposes.回彈儀應(yīng)保持水平并垂直于混凝土澆筑側(cè)面，并應(yīng)緩慢、均勻施壓。Thereboundhammershouldbemaintainedhorizontallyandperpendiculartothecastsideoftheconcrete,andpressureshouldbeappliedslowlyanduniformly.回彈Rebound彈擊時測點(diǎn)與測點(diǎn)之間彈擊的時間間隔不應(yīng)少于1秒。Thetimeintervalbetweensuccessiveimpactsatdifferenttestpointsshouldnotbelessthan1second.回彈Rebound測點(diǎn)宜在測區(qū)范圍內(nèi)均勻分布，相鄰兩測點(diǎn)的凈距離不宜小于20mm。Testpointsshouldbeevenlydistributedwithinthetestarea,andthenetdistancebetweenadjacenttestpointsshouldpreferablynotbelessthan20millimeters.回彈Rebound檢測樓板時，回彈儀應(yīng)垂直向上彈擊樓板底部。Duringtheinspectionoffloorslabs,theresiliometershouldbeappliedtoimpactthebottomsurfaceoftheslabinaverticalupwarddirection.回彈Rebound每一測區(qū)應(yīng)記取10個有效的回彈值；Ineachtestarea,10validreboundvaluesshouldberecorded.每一測點(diǎn)的回彈值讀數(shù)應(yīng)精確至1。Thereadingofthereboundvalueateachmeasurementpointshouldbeaccurateto1.回彈Rebound測點(diǎn)距外露鋼筋、預(yù)埋件的距離不宜小于30mm。