马凳筋的长度如何计算.doc

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1、马凳筋的长度如何计算？马凳高度=板厚-2*保护层-Σ(上部板筋与板最下排钢筋直径之和)。上平直段为板筋间距+50mm（也可以是80mm，马凳上放一根上部钢筋），下左平直段为板筋间距+50mm，下右平直段为100，这样马凳的上部能放置二根钢筋，下部三点平稳地支承在板的下部钢筋上。马凳筋不能接触模板，防止马凳筋返锈。马凳筋的规格：当板厚≤140mm，板受力筋和分布筋≤10，时马凳筋直径可采用ф8；当140mm

2、0mm时,马凳直径可采用ф14；当500mm

3、hedesignrequirements.6.4,6,wearingconstructiontechnologyofgeneratorrotorsdemonstration6.4.6.1constructionpreparationandconditionsthroughthestatorbeforeloadingcheckandconfirmtoconfirmairtightnesstestofthestatorandstatormechanical,electrical,instrumentationandcontrolandother

4、relatedworkhadbeencompleted.Internalcleaningofstator,highpowervacuumthesurfaceofthestator.StatorandrotormagneticCenterdrainageiscomplete.Inconjunctionwiththequality,mechanical,electricalandotherrelevantpersonstofinallycleaningcheckthestator,whichiscleanandfreeofanydebris.W

5、ornrotorscheckandconfirmconfirmbeforeloadingtherotorairtightnesstest,electricaltestworkhasbeencompleted.Inconjunctionwiththequality,mechanical,electricalandotherrelevantpersonstofinallycleantherotorschecked,itsinterioriscleanandfreeofanydebris.Byquality,mechanical,electric

6、alandotherprofessionalstoconductanexaminationoftherotor,confirmthewearconditionoftherotor.Specialequipmentinspectionandrotorthroughthepreparationtoolbeforeloadinginventory,checktoconfirmthatitappearsintact,completetool,toolsrequiredforuseofwireropethathasafactorycertificat

7、eandtestreport;wireropeshouldselectthesafetyfactor≥6;hoisttestingqualified;roadhavebeenequipmentauthorizedVisatemporarysupporttiesshouldbeahardwood.Endsbearingendcoverwithconnectionofthestatorplateorgourdsbyexclusivelugontheendfaceofatemporarylow-hangingonthe16；厚度大于800mm最好

8、采用钢筋支架或角钢支架。筏板基础中措施钢筋大型筏板基础中措施钢筋不一定采用马凳钢筋而往往采用钢支架形式，支架必须经过计算才能确定它的规格和间距，才能确保支架的稳定性和承载力。在确