建筑结71课件讲解

建筑结构ArchitecturalStructures混凝土强度检测ConcreteStrengthInspection4.4柱构件设计ColumnDesign目录

CONTENTS仪器设备介绍IntroductiontoInstrumentationEquipment1率定Calibration2回弹Rebound4测区布置TestAreaLayout3材料的质量Thequalityofmaterials回弹仪被广泛应用在现场随机抽检构件。Reboundtestersarewidelyusedinrandomon-siteinspectionsofstructuralcomponents.掌握混凝土强度Determinethestrengthoftheconcrete掌握浇筑整体水平Determinetheoveralllevelofitscasting仪器设备介绍IntroductiontoInstrumentationEquipmentPARTONE仪器设备介绍IntroductiontoInstrumentationEquipment印章、印油Stampsandinkpads标称能量为2.207J的回弹仪Areboundhammerwithanominalenergyratingof2.207J仪器设备介绍IntroductiontoInstrumentationEquipment标准钢砧Astandardsteelanvil便携式微型标准钢砧Aportableminiaturizedstandardsteelanvil仪器设备介绍IntroductiontoInstrumentationEquipment除尘刷Adustingbrush吹气枪Anairblowinggun仪器设备介绍IntroductiontoInstrumentationEquipment回弹仪的校准周期不宜超过半年；Thecalibrationperiodforareboundhammershouldnotexceedsixmonths.检查校准周期CheckCalibrationInterval仪器设备介绍IntroductiontoInstrumentationEquipment钢砧的校准周期不宜超过2年。Thecalibrationperiodforsteelanvilsshouldnotexceedtwoyears.检查校准周期CheckCalibrationInterval仪器设备介绍IntroductiontoInstrumentationEquipment不能使用超出校准周期内或者已经标识为停用的设备进行检测。Itisprohibitedtouseequipmentthathasexceededitscalibrationperiodorhasbeenmarkedasout-of-servicefortestingpurposes.检查校准周期CheckCalibrationInterval率定CalibrationPARTTWO率定Calibration每次回弹检测前、后；Beforeandaftereachreboundtest.回弹仪在现场测试击次数超过3000次；Whenthenumberofimpactsonthereboundhammerexceeds3000timesduringon-sitetesting.率定结果应有记录。Theresultsofstandardcalibrationshouldbedocumented.率定Calibration标准率定Standardcalibration复核率定Standardcalibration标准钢砧Astandardsteelanvil便携式微型标准钢砧Aportableminiaturestandardsteelanvil钢砧选用SelectionofSteelAnvil率定Calibration标准率定试验规定Standardcalibrationtestspecifications钢砧表面应平整、干燥、清洁，并应稳固平放在刚度较大的物体上。Thesurfaceofthesteelanvilshouldbeflat,dry,clean,andsecurelyplacedhorizontallyonarigidobjectwithsubstantialstiffness.率定Calibration标准率定试验规定Standardcalibrationtestspecifications分四个方向进行，每个方向弹击前，弹击杆应旋转90度。Thecalibrationtestshouldbeconductedinfourdirections,andbeforestrikingineachdirection,thestrikerrodshouldberotatedby90degrees.率定Calibration标准率定试验规定Standardcalibrationtestspecifications回弹值应取连续向下弹击三次的稳定回弹结果的平均值，每个方向的回弹平均值均应为80±2。Thereboundvalueshouldbetheaverageofthestablereboundresultsobtainedfromthreeconsecutivedownwardimpacts，andthereboundaverageineachdirectionshouldbe80±2.率定Calibration标准率定试验规定Standardcalibrationtestspecifications合格Qualified继续使用Continuetobeused率定Calibration标准率定试验规定Standardcalibrationtestspecifications不合格Notqualified保养Maintenance重新率定Re-calibrating混凝土结构检测Concretestructuretesting测区布置TestAreaLayoutPARTTHREE测区布置TestAreaLayout测区布置TestAreaLayout

测区宜布置在构件的两个对称的可测面上。Testareasshouldbearrangedontwosymmetricmeasurablesurfacesofthecomponent.

测区宜布置在构件的两个对称的可测面上。Testareasshouldbearrangedontwosymmetricmeasurablesurfacesofthecomponent.每个构件的测区数不应少于10个。Thenumberoftestareasforeachcomponentshouldnotbelessthanten.

测区布置TestAreaLayout

不能布置在对称的可测面上时，也可布置在同一可测面上。Whenitisnotpossibletoarrangeonasymmetricalmeasurablesurface,theycanalsobearrangedonthesamemeasurablesurface.测区布置TestAreaLayout

测区应布置在构件上具有代表性的区域。Testareasshouldbeplacedinrepresentativeregionsofthecomponent.在构件的重要部位及薄弱部位也应布置测区，并应避开预埋件。Testareasalsobeingarrangedatimportantandweakpartsofthecomponent,andcareshouldbetakentoavoidpre-installedembeddedparts.测区布置TestAreaLayout<0.04m2测区的面积不宜大于0.04m2。Thetestareashouldnotexceedanareaof0.04m².测区布置TestAreaLayout相邻两测区的间距不应大于2m。Thespacingbetweenadjacenttestareasshouldnotexceed2m.＜2m＜2m＜2m＜2m测区布置TestAreaLayout<0.5m,>0.2m<0.5m,>0.2m<0.5m,>0.2m<0.5m,>0.2m<0.5m,>0.2m非节点部位Non-nodepart测区与构件端部或施工缝边缘的距离不宜大于0.5m，且不宜小于0.2m

。Thedistancebetweenthetestareaandtheendofthestructuralcomponentorconstructionjointshouldnotbegreaterthan0.5m,anditisalsonotadvisabletobelessthan0.2m.测区布置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时：Whenthedimensionofonedirectionontheinspectionsurfaceoftheinspectedcomponentisnotgreaterthan4.5mandthedimensionintheotherdirectionisnotgreaterthan0.3m.测区布置TestAreaLayout每个构件的测区数量可适当减少，但不应少于5个。Thenumberoftestareasforeachcomponentcanbeappropriatelyreduced,butshouldnotbelessthan5.

测区布置TestAreaLayout>18m当受检构件跨度大于18m时，每个构件的测区数不应少于20。Whenthespanoftheinspectedmemberexceeds18m,thenumberoftestareasforeachcomponentshouldnotbelessthan20.测区布置TestAreaLayout当受检构件跨度大于18m时，每个构件的测区数不应少于20。Whenthespanoftheinspectedmemberexceeds18m,thenumberoftestareasforeachcomponentshouldnotbelessthan20.1234567891011121314151617181920测区布置TestAreaLayout分段浇筑成型的大型构件，按浇筑段为单位布置测区。Whenthememberisalarge-scalecomponentcastinsections,testareasshouldbearrangedaccordingtothecastingsegments.浇筑段Castingsegment每一浇筑段布置测区数不应少于10个。Foreachcastingsegment,thenumberofarrangedtestareasshouldnotbelessthan10.测区布置TestAreaLayout弹击时产生颤动的薄壁及小型构件应进行固定。Thin-walledandsmall-sizedcomponentsthatvibrateduringimpactshouldbesecured.测区应标有清晰的编号。Testareasshouldbemarkedwithclearnumbers.Thenumberoftestarea:

2测区布置TestAreaLayout绘制测区布置示意图描述外观质量情况。Testareasshouldhavealayoutdiagramdrawntodescribetheappearancequalityconditions.回弹法检测砼抗压强度记录表ReboundMethodTestRecordSheetforConcreteCompressiveStrength测区布置TestAreaLayout回弹ReboundPARTTHREE回弹Rebound检测面应为混凝土原浆面。Theconditionofthetestsurfaceshouldbechecked.清洁、干燥、平整Clean,dry,smooth回弹Rebound检测面应为混凝土原浆面。Theconditionofthetestsurfaceshouldbechecked.疏松层、浮浆、油垢、涂层以及蜂窝、麻面Looselayers,laitance,oilstains,coatings,honeycombs,pittedsurfaces回弹Rebound检测面应为混凝土原浆面。Theconditionofthetestsurfaceshouldbechecked.必要时采用砂轮磨除表面杂物并清理粉末。Whennecessary,useabrasivewheelstoremovesurfacedebrisandcleanuppowder.回弹Rebound表面已经装饰、粉刷的构件，应将装饰、粉刷层清除干净，不可将装饰、粉刷层当混凝土原浆面进行检测。Forcomponentsthathavebeendecoratedorpaintedonthesurface,thedecorationandpaintlayersshouldbethoroughlyremoved;theymustnotbetreatedastheoriginalconcretesurfacefortestingpurposes.回弹仪应保持水平并垂直于混凝土浇筑侧面，并应缓慢、均匀施压。Thereboundhammershouldbemaintainedhorizontallyandperpendiculartothecastsideoftheconcrete,andpressureshouldbeappliedslowlyanduniformly.回弹Rebound弹击时测点与测点之间弹击的时间间隔不应少于1秒。Thetimeintervalbetweensuccessiveimpactsatdifferenttestpointsshouldnotbelessthan1second.回弹Rebound测点宜在测区范围内均匀分布，相邻两测点的净距离不宜小于20mm。Testpointsshouldbeevenlydistributedwithinthetestarea,andthenetdistancebetweenadjacenttestpointsshouldpreferablynotbelessthan20millimeters.回弹Rebound检测楼板时，回弹仪应垂直向上弹击楼板底部。Duringtheinspectionoffloorslabs,theresiliometershouldbeappliedtoimpactthebottomsurfaceoftheslabinaverticalupwarddirection.回弹Rebound每一测区应记取10个有效的回弹值；Ineachtestarea,10validreboundvaluesshouldberecorded.每一测点的回弹值读数应精确至1。Thereadingofthereboundvalueateachmeasurementpointshouldbeaccurateto1.回弹Rebound测点距外露钢筋、预埋件的距离不宜小于30mm。