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1、砖混、外砖内模结构构造柱、圈梁、板缝钢筋绑扎1.1本工艺标准适用于砖混结构、外砖内模结构的构造柱、圈梁、板缝钢筋绑扎工艺。2.1材料及主要机具:2.1.1钢筋:应有出厂合格证,按规定作力学性能复试,当加了过程中发生脆断等特殊情况,还需作化学成分检验。钢筋应无老锈及油污。2.1.2铁丝;可采用20~22号铁丝(火烧丝)或镀锌铁丝(铅丝)。2.1.3控制混凝土保护层用的砂浆垫块、塑料卡。2.1.4工具:钢筋钩子、撬棍、钢筋板子、绑扎架、钢丝刷子、手推车、粉笔,尺子等。2.2作业条件:2.2.1按施工现场平面图规定的位置,将钢筋堆放场地进行清理、平整,准备好垫木。按不
2、同规格型号堆放并垫好垫木。2.2.2核对钢筋级别、型号、形状、尺寸及数量,是否与设计图纸及加工配料单相同。2.2.3弹好标高水平线及构造柱、外砖内模混凝土墙的外皮线。summerofmasonryconstruction,brickrequiressufficientmoist.8.6.2.6youmusttakethefollowingmeasurestoconcreteconstructioninsummerhightemperatureimpactonconcretea.hardeningspeedup,vibratingdifficultiesreduc
3、edbleeding,fastdrying,easytocrack(plastic),highearlystrength,fastearlyhydrationheat,lesscooling,temperatureincreasesrapidly,duetotemperaturedifferencecracks.B.pouringdaytimehightemperatures,duetothehightemperatureeffectofconcretestrength,stability,invaryingdegrees,onmixingprocesses,p
4、erfusionvibrationandmoistureconservation,effectivemeasuresshouldbetaken.2)mainmeasurestakenbya.temperaturecontrolthewatertemperatureinyourstandardmixproportionofconcrete2degrees,theconcretetemperature0.5degrees.B.withthecontrolledadditionofretarderagentcanreducetheeffectsofconcreteun
5、derhightemperature,butmakesomeperformancedegradationofconcrete,sowhenyouareusingadditivesmustbeimplementeduponapprovalbythesupervisingengineer.C.timecontrolsuitableforworkatnight,shouldseektoreducethemixingtimeandshippingtimeathightemperatures.D.strengthentheconservationandhightemper
6、aturesafterpouringintheearlydaysofcontinuouswaterconservationtopreventsurfacedryingandcoveringthin-filmwetgrassbagtomakeitmoistStatein24hours.8.6.38.6.3.1winterconstructionmeasuresinwinterconstructionpreparation1)requiredwinterconstructionmaterials,equipment,planningaheadoftimecomesi
7、nto2.2.4圈梁及板缝模板已做完预检,并将模内清理干净。2.2.5预应力圆孔板的端孔已按标准图(96G44)的要求堵好。3.1构造柱钢筋绑扎:3.1.1工艺流程:预制构造柱钢筋骨架→修整底层伸出的构造柱塔接筋→安装构造柱钢筋骨架→绑扎搭接部位箍筋3.1.2预制构造柱钢筋骨架:3.1.2.1先将两根竖向受力钢筋平放在绑扎架上,并在钢筋上画出箍筋间距。3.1.2.2根据画线位置,将箍筋套在受力筋上逐个绑扎,要预留出搭接部位的长度。为防止骨架变形,宜采用反十字扣或套扣绑扎。箍筋应与受力钢筋保持垂直;箍筋弯钩叠合处,应沿受力钢筋方向错开放置。3.1.2.3穿另外二根
8、受力钢筋,并与箍筋绑扎牢