钢筋直螺纹套管连接

钢筋直螺纹套管连接技1-5技术交底记录2011年6月6日河南工业大学师生周转房名称分部工程基础H标段1#楼分项工程名称钢筋直螺纹套筒连接交底内容:钢筋直螺纹套筒连接1.适用范围本工程?20mm的钢筋2.作业准备(1)熟读设计图纸、规范和技术标准，对加工及施工人员进行技术交底。(2)所有钢筋必须有出厂合格证及复验报告，连接套筒应有出厂合格证，两端有保护套进行丝扣保护，进场时质检员应复检合格后方可用到工程上，钢筋直螺纹加工必须有检验记录。3.技术要求(1)钢筋先调直再下料，切口端面与钢筋轴线垂直，不得有马蹄形或挠曲，不得用气割下料。(2)钢筋下料时必须符合下列规定:a.设置在同一构件内同一截面受力钢筋的接头位置应相互错开。同一截面接头百分率不应超过50%。b.接头端头距钢筋受弯点不得小于钢筋直径的10倍长度。c.钢筋连接套的砼保护层厚度应满足《混凝土结构设计规范》中受力钢筋砼保护层最小厚度的要求，且不得小于15mm，连接套之间的横向净距不宜小于25mm。4施工程序与工艺流程4.1施工程序原材检测?钢筋下料?丝头加工?钢筋连接(制安)。4.2钢筋丝头加工工艺流程(1)钢筋端部平头使用钢筋切割机进行切割;(2)按照钢筋所需的调整试棒调整好滚丝头内孔最小尺寸;(3)按钢筋规格更换涨刀环，并按规定的丝头加工尺寸调整好剥肋加工尺寸:(4)调整剥肋挡块及滚轧行程开关位置，保证剥肋及滚轧螺纹的长度符合丝头加工尺寸的规定;标准型接头的丝头有效螺纹长度应不小于1/2连接套筒长度，且允许误差为+2P;(5)丝头加工时应用水性润滑液，不得使用油性润滑液;(6)钢筋丝头加工完毕经检验合格后，应立即带上丝头保护帽或拧上连接套筒，防止装卸钢筋时损坏丝头;郑州市工程质量监督站监制sitesscatteredworksurfaceshouldbedistributed.Brickmasonryconstructionismainlydistributedinthefactory,thefactoryworks.8.3.1materialdumpsinmasonryconstructionmaterialsarepiledupinbatchesinthevicinityoftheconstruction,hand-to-mouth,andmaintainacertainreserve.8.3.2supplymortarHZS60concretemixingstationaftermixingwith5Tdumptrucktransporttothesurfaceoftheconstruction.8.3.3masonrymaterialtransporttransport5Ttipperwithgravelandothermaterialstransportedtothesurfaceoftheconstruction.8.48.4masonryconstruction....Stone),canbeusedtosew,butitsamountshallnotexceedtheweightofmasonry10%.Stonemasonry:accordingtothedegreeofsmoothnessoftheworksurfaceisdividedintofinestones,semifinestone,crudestoneandstonewoolinfour.StoneprocessingrequirementsshouldbeconsistentwiththesurfaceGBJ50203-20026th.theprovisionsofarticle3.2.8.4.2sand,gravel(1)sandandgravelqualityshallconformtoSD120-84table2.1.2and2.1.3requirements.Mortarandsmallersandaggregateconcreteused,requireddiameterof0.15~5mm,finenessmodulusfor2.5~3.0,layingstonemortarsand,itsmaximumdiameterisnotmorethan5mm;stonemortarformasonrysand,maximumsizelessthan2.5mm;(2)withtwo-gradedaggregateconcrete,gravelsizefor5~20mmand20~40mm.8.4.3cementandwater(1)masonryengineeringusingcementandmarkingshallcomplywiththetechnicalprovisionsofsection8.4.theprovisionsofparagraph3.1,arrivalofthecementshouldbevariety,grade,dateofstockpilingseparately,wetlumpsofcement,theprohibitionoftheuse.(2)waterqualitystandardsshouldberequired,mixingmortarandsmallaggregateconcrete.Onmixingandcuringofwaterqualitywhenthereisdoubt,mortarstrengthverificationshouldbecarriedout,thecompressivestrengthofthemortarifthewaterisbelowstandard28daysthecompressivestrengthofmortarmadeofwaterbelow90%,thiswatercannotbeused.8.4.4smallaggregateconcreteandcementmortar(1)mixofcementitiousmaterialsmust技1-5技术交底记录河南工业大学师生周转房工程名称分部工程基础H标段1#楼分项工程名称钢筋直螺纹套筒连接交底内容5.施工要求(1)连接钢筋时，钢筋规格和连接套的规格应一致，并确保钢筋和连接套的丝扣干净、完好无损。(2)必须用力矩扳手拧紧接头。(3)力矩扳手的精度为?5%，要求每半年用扭力仪检定一次。(4)连接钢筋时应对正轴线将钢筋拧入连接套，然后用力矩扳手拧紧。接头拧紧值应满足一规定的力矩值，不得超拧，拧紧后的接头应作上标记，防止钢筋接头漏拧。(5)钢筋连接前要根据所连接钢筋直径的需要将力矩扳手上的游动标尺刻度调定在相应的位置上。即按规定的力矩值使力矩板手钳头垂直钢筋轴线均匀加力。当听到力矩扳手发出“咔嗒”声响时即停止加力(否则会损坏扳手)。(6)连接水平钢筋时必须依次连接，从一头往另一头，不得从两边往中间连接，连接时一定两人面对站定，一人用扳手管钳卡住已连接好的钢筋，另一人用力矩扳手拧紧待连接钢筋，按规定的力矩值进行连接，这样可避免弄坏已连接好的钢筋接头。(7)力矩扳手不使用时，将其力矩值调为零，以保证其精度。(8)使用扳手对钢筋接头拧紧时，只要达到力矩扳手调定的力矩值即可，拧紧后按下列力矩值检查:滚轧直螺纹钢筋接头拧紧力矩值钢筋直径/??1618~2022~2528~32拧紧力矩值/(N?m)100200260360注:当钢筋直径的钢筋连接时，拧紧力矩值按较小直径钢筋的相应值取用。6.质量控制及检验6.1检查钢筋连接质量郑州市工程质量监督站监制sitesscatteredworksurfaceshouldbedistributed.Brickmasonryconstructionismainlydistributedinthefactory,thefactoryworks.8.3.1materialdumpsinmasonryconstructionmaterialsarepiledupinbatchesinthevicinityoftheconstruction,hand-to-mouth,andmaintainacertainreserve.8.3.2supplymortarHZS60concretemixingstationaftermixingwith5Tdumptrucktransporttothesurfaceoftheconstruction.8.3.3masonrymaterialtransporttransport5Ttipperwithgravelandothermaterialstransportedtothesurfaceoftheconstruction.8.48.4masonryconstruction....Stone),canbeusedtosew,butitsamountshallnotexceedtheweightofmasonry10%.Stonemasonry:accordingtothedegreeofsmoothnessoftheworksurfaceisdividedintofinestones,semifinestone,crudestoneandstonewoolinfour.StoneprocessingrequirementsshouldbeconsistentwiththesurfaceGBJ50203-20026th.theprovisionsofarticle3.2.8.4.2sand,gravel(1)sandandgravelqualityshallconformtoSD120-84table2.1.2and2.1.3requirements.Mortarandsmallersandaggregateconcreteused,requireddiameterof0.15~5mm,finenessmodulusfor2.5~3.0,layingstonemortarsand,itsmaximumdiameterisnotmorethan5mm;stonemortarformasonrysand,maximumsizelessthan2.5mm;(2)withtwo-gradedaggregateconcrete,gravelsizefor5~20mmand20~40mm.8.4.3cementandwater(1)masonryengineeringusingcementandmarkingshallcomplywiththetechnicalprovisionsofsection8.4.theprovisionsofparagraph3.1,arrivalofthecementshouldbevariety,grade,dateofstockpilingseparately,wetlumpsofcement,theprohibitionoftheuse.(2)waterqualitystandardsshouldberequired,mixingmortarandsmallaggregateconcrete.Onmixingandcuringofwaterqualitywhenthereisdoubt,mortarstrengthverificationshouldbecarriedout,thecompressivestrengthofthemortarifthewaterisbelowstandard28daysthecompressivestrengthofmortarmadeofwaterbelow90%,thiswatercannotbeused.8.4.4smallaggregateconcreteandcementmortar(1)mixofcementitiousmaterialsmust技1-5技术交底记录河南工业大学师生周转房工程名称分部工程基础H标段1#楼分项工程名称钢筋直螺纹套筒连接交底内容:(1)检查接头外观质量应外露不超过2扣，钢筋与连接套筒之间无缝隙;(2)用力矩扳手检查接头拧紧程度。6.2钢筋笼质量要求(1)钢筋笼桩顶6m范围内不能有套筒接头，可用闪光对焊。6.3丝头加工尺寸控制Ф18:丝头长度:25?完整丝扣圈数:?9扣Ф20:丝头长度:27.5?完整丝扣圈数:?10扣Ф22:丝头长度:30?完整丝扣圈数:?11扣6.4成品保护(1)成型钢筋应垫方木码放整齐，防止钢筋变形、锈蚀，油污。(2)仰拱、边墙竖筋在浇筑混凝土前套好塑料管保护或用彩条布、塑料布包裹严密;浇注完毕后用钢丝刷将被污染的钢筋刷干净。6.5丝头现场检验(1)加工的丝头应逐个进行自检，不合格的丝头应切去重新加工;(2)自检合格的丝头，应有现场质检员随机抽样检验，以一个工作班加工的丝头为一个检验批，抽检10%，且不少于10个;现场丝头的抽检合格率不应小于95%，当抽检合格率小于95%时，应另抽取同样数量的丝头重新检验，当两次检验的总合格率不小于95%时，该批产品合格。当合格率仍小于95%时，则应对全部丝头进行逐个检验，合格者方可使用。6.6钢筋接头的现场检验(1)外观质量自检合格的钢筋连接接头，应由现场质检员随机抽样进行检验。同一施工条件下采用同一材料的同等级同型式同规格接头，以连续生产的500个为一个检验批进行检验和验收，不足500个的也按一个检验批计算。郑州市工程质量监督站监制sitesscatteredworksurfaceshouldbedistributed.Brickmasonryconstructionismainlydistributedinthefactory,thefactoryworks.8.3.1materialdumpsinmasonryconstructionmaterialsarepiledupinbatchesinthevicinityoftheconstruction,hand-to-mouth,andmaintainacertainreserve.8.3.2supplymortarHZS60concretemixingstationaftermixingwith5Tdumptrucktransporttothesurfaceoftheconstruction.8.3.3masonrymaterialtransporttransport5Ttipperwithgravelandothermaterialstransportedtothesurfaceoftheconstruction.8.48.4masonryconstruction....Stone),canbeusedtosew,butitsamountshallnotexceedtheweightofmasonry10%.Stonemasonry:accordingtothedegreeofsmoothnessoftheworksurfaceisdividedintofinestones,semifinestone,crudestoneandstonewoolinfour.StoneprocessingrequirementsshouldbeconsistentwiththesurfaceGBJ50203-20026th.theprovisionsofarticle3.2.8.4.2sand,gravel(1)sandandgravelqualityshallconformtoSD120-84table2.1.2and2.1.3requirements.Mortarandsmallersandaggregateconcreteused,requireddiameterof0.15~5mm,finenessmodulusfor2.5~3.0,layingstonemortarsand,itsmaximumdiameterisnotmorethan5mm;stonemortarformasonrysand,maximumsizelessthan2.5mm;(2)withtwo-gradedaggregateconcrete,gravelsizefor5~20mmand20~40mm.8.4.3cementandwater(1)masonryengineeringusingcementandmarkingshallcomplywiththetechnicalprovisionsofsection8.4.theprovisionsofparagraph3.1,arrivalofthecementshouldbevariety,grade,dateofstockpilingseparately,wetlumpsofcement,theprohibitionoftheuse.(2)waterqualitystandardsshouldberequired,mixingmortarandsmallaggregateconcrete.Onmixingandcuringofwaterqualitywhenthereisdoubt,mortarstrengthverificationshouldbecarriedout,thecompressivestrengthofthemortarifthewaterisbelowstandard28daysthecompressivestrengthofmortarmadeofwaterbelow90%,thiswatercannotbeused.8.4.4smallaggregateconcreteandcementmortar(1)mixofcementitiousmaterialsmustsitesscatteredworksurfaceshouldbedistributed.Brickmasonryconstructionismainlydistributedinthefactory,thefactoryworks.8.3.1materialdumpsinmasonryconstructionmaterialsarepiledupinbatchesinthevicinityoftheconstruction,hand-to-mouth,andmaintainacertainreserve.8.3.2supplymortarHZS60concretemixingstationaftermixingwith5Tdumptrucktransporttothesurfaceoftheconstruction.8.3.3masonrymaterialtransporttransport5Ttipperwithgravelandothermaterialstransportedtothesurfaceoftheconstruction.8.48.4masonryconstruction....Stone),canbeusedtosew,butitsamountshallnotexceedtheweightofmasonry10%.Stonemasonry:accordingtothedegreeofsmoothnessoftheworksurfaceisdividedintofinestones,semifinestone,crudestoneandstonewoolinfour.StoneprocessingrequirementsshouldbeconsistentwiththesurfaceGBJ50203-20026th.theprovisionsofarticle3.2.8.4.2sand,gravel(1)sandandgravelqualityshallconformtoSD120-84table2.1.2and2.1.3requirements.Mortarandsmallersandaggregateconcreteused,requireddiameterof0.15~5mm,finenessmodulusfor2.5~3.0,layingstonemortarsand,itsmaximumdiameterisnotmorethan5mm;stonemortarformasonrysand,maximumsizelessthan2.5mm;(2)withtwo-gradedaggregateconcrete,gravelsizefor5~20mmand20~40mm.8.4.3cementandwater(1)masonryengineeringusingcementandmarkingshallcomplywiththetechnicalprovisionsofsection8.4.theprovisionsofparagraph3.1,arrivalofthecementshouldbevariety,grade,dateofstockpilingseparately,wetlumpsofcement,theprohibitionoftheuse.(2)waterqualitystandardsshouldberequired,mixingmortarandsmallaggregateconcrete.Onmixingandcuringofwaterqualitywhenthereisdoubt,mortarstrengthverificationshouldbecarriedout,thecompressivestrengthofthemortarifthewaterisbelowstandard28daysthecompressivestrengthofmortarmadeofwaterbelow90%,thiswatercannotbeused.8.4.4smallaggregateconcreteandcementmortar(1)mixofcementitiousmaterialsmust