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1、砖墙砂浆配合双面挂线施工施工过程中,张拉时必须保证顶板受力均匀,避免先浇混凝土导致约束受力不均,故先不浇捣桁架竖腹杆和斜腹杆,等到上弦梁板中应力稳定后,再进行竖腹杆、斜腹杆的支模及混凝土浇筑施工,并且混凝土后浇桁架不会容易出现裂缝。在施工过程中,利用排架支撑地下室顶板。Constructionprocess,mustensurethattheroofwhentensioningforceuniform,avoidunevenbeforepouringconcreteleadstoconstraints,sothefirstcastnottrussdiagonalvert
2、icalandobliqueabdominalrod,waituntilthewindstressinbeamandslabafterstability,againcarriesontheverticalwebmember,shutteringofobliqueabdominalrodandconcretepouringconstruction,andnoteasytocrackafterpouringofconcretetruss.Intheprocessofconstruction,useofbentframesupportingthebasementroof.建筑
3、地下1层两简体间c、d、e、f轴各有1榀预应力混凝土桁架,其中上弦杆采用后张法施加预应力,每根上弦杆配4束钢绞线,施加4000kn的有效应力,超张拉103%。采用4根大梁对称张拉,每根梁内4孔进行对称对角张拉。1floorundergroundbuildingc,d,e,fbetweenthetwosimplifiedaxiseachhave1prestressedconcretetruss,theupperchordbypost-tensionedprestressing,eachupperchordwith4bundleofsteelstrand,4000knofe
4、ffectivestress,hypertension(103%).Using4girdersymmetrictensioning,each4holessymmetricdiagonaltensionedbeam.砖必须要在砌筑前一天浇水湿润,含水率为10~15%。常温施工不得干砖上墙,雨季不得使用含水率达饱和的砖砌墙。砂浆配合比采用重量比,计量精度水泥为±2%,砂控制在±5%以内。采用砂浆搅拌机搅拌,搅拌时间不少于1.5min。砌砖前应先盘角,每次盘角不要超过五层,新盘的大角及时进行吊车吊、靠。Brickmasonrymustbewateringhumidday,mo
5、isturecontentof10~15%.Roomtemperatureconstructionmaynotdryonthebrickwall,moisturecontentofsaturatedbrickybuildbylayingbricksorstoneswallshallbeusedfortherainyseason.Cementmortarmixproportionbyweightratio,themeasurementprecisionofplusorminus2%,sandcontrollingwithinplusorminus5%.Usingmorta
6、rmixermixing,stirringtimenotlessthan1.5min.BrickplateAngle,shouldbetakenbeforeeachplateAnglenotmorethanfivefloors,newdish,thegreathorninatimelymanner.如有偏差要及时修整。盘角时要仔细对照皮数杆的砖层和标高,控制好灰缝大小,使水平经编土工格栅灰缝均匀一致。应力随上部结构施工逐渐上升,在到5层时达最高点绝大多是测点预应力在20mpa以上,5层变换就不太明显了。在连接上部结构第1道钢桁架后,在2个简体创造了新的约束,导致应力再次
7、上升,之后就保持平稳了。Ifthereisanydeviationtofinishintime.PlateAnglecontrolskincarefullycountrodbricklayersandelevation,goodcontrolofashseamsize,makethehorizontalmortarjointuniform.Stressrisinggraduallyovertheupperstructureconstructiononto5layerreachesthehighestpointmostisprestress