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1、马凳算量马凳的概念马凳筋作为板的措施钢筋是必不可少的,从技术和经济角度来说有时也是举足轻重的,它既是设计的范畴也是施工范畴更是预算的范畴。一些缺乏实际经验和感性认识的人往往对其忽略和漏算。马凳不是个简单概念,但时至今日没有具体的理论依据和数据,没有通用的计算标准和规范,往往是凭经验和直觉。不过道理弄明白了,也了解实际施工,那么计算马凳筋就不是件难事。任何把简单的事情复杂化和把复杂的问题简单化都是有害的。马凳,它的形状象凳子故俗称马凳,也称撑筋。用于上下两层板钢筋中间,起固定上层板钢筋的作用。当基础厚度较大时(大于800mm)不宜用马凳,而是用支架更稳定和牢固。马凳钢
2、筋一般图纸上不注,只有个别设计者设计马凳,大都由项目工程师在施工组织设计中详细标明其规格、长度和间距,通常马凳的规格比板受力筋小一个级别,如板筋直径ф12可用直径为ф10的钢筋做马凳,当然也可与板筋相同。纵向和横向的间距一般为1米。不过具体问题还得具体对待,如果是双层双向的板筋为ф8,钢筋刚度较低,需要缩小马凳之间的距离,如间距为@800*800,如果是双层双向的板筋为ф6马凳间距则为@500*500。有的板钢筋规格较大,如采用直径ф14,那么马凳间距可适当放大。总之马凳设置的原则是固定牢上层钢筋网,能承受各种施工活动荷载,确保上层钢筋的保护层在规范规定的范围内。板
3、厚很小时可不配置马凳,如小于100MM的板马凳的高度小于50mm,无法aspecialtooltomeasurehalfapointtherotorshaftrunoutandsimultaneousmeasurementoftwocouplingfluttertesting,itshouldmeettherequirements.Installthecouplinghousingstoensureembeddedrotorcouplingwithinaconcaveshoulder,androtorclearancemeetsthedesignrequiremen
4、ts.6.4,6,wearingconstructiontechnologyofgeneratorrotorsdemonstration6.4.6.1constructionpreparationandconditionsthroughthestatorbeforeloadingcheckandconfirmtoconfirmairtightnesstestofthestatorandstatormechanical,electrical,instrumentationandcontrolandotherrelatedworkhadbeencompleted.Int
5、ernalcleaningofstator,highpowervacuumthesurfaceofthestator.StatorandrotormagneticCenterdrainageiscomplete.Inconjunctionwiththequality,mechanical,electricalandotherrelevantpersonstofinallycleaningcheckthestator,whichiscleanandfreeofanydebris.Wornrotorscheckandconfirmconfirmbeforeloading
6、therotorairtightnesstest,electricaltestworkhasbeencompleted.Inconjunctionwiththequality,mechanical,electricalandotherrelevantpersonstofinallycleantherotorschecked,itsinterioriscleanandfreeofanydebris.Byquality,mechanical,electricalandotherprofessionalstoconductanexaminationoftherotor,c
7、onfirmthewearconditionoftherotor.Specialequipmentinspectionandrotorthroughthepreparationtoolbeforeloadinginventory,checktoconfirmthatitappearsintact,completetool,toolsrequiredforuseofwireropethathasafactorycertificateandtestreport;wireropeshouldselectthesafetyfactor≥6;hoisttestingqua