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1、钢或混凝土支撑系统施工工艺标准（Standardforconstructiontechnologyofsteelorconcretesupportsystem）ModelproductKg/m343FourBuildingmm2CMYTwoT30030030300101518119.8942040013.167504507.51TOneXXThirty-fiveH350350350350121920173.91374030015.223007768.84Y400b1321,22218.7172330112017.52240010.1400400400--
2、--------------------------------------------page2钢筋混凝土支撑2.32.3.1水泥宜采用32.5或42.5的普通硅酸盐水泥或矿渣硅酸盐水泥应具有出厂合格证和复试报告2.3.2砂应选用洁净的粗砂含泥量不大于3%2.3.4石子宜选用石或碎石粒径宜在0.54.5cm,含泥量不应大于2%钢筋品种和规模均应符合设计要求并有出厂合格证和复试报告2.3.53施工机具m3.1钢支撑砂轮机电钻电焊机扭矩扳手轴力计钢尺冲钉钢钎等o3.2混凝土支撑混凝土搅拌机振动棒等c工艺流程g4.4.1钢管支撑n4.1.1钢管支撑的型式,多
3、为对撑或角撑如下图所示当为对撑时为增大间距在端部ol可加设以减少围檩的内力当为角撑时如间距较大长度较长亦可增设腹杆形成桁u架式支撑hz.111010wthewwthe网龙fd111010筑theb钢管支撑的型式the对撑角撑b4.1.2对撑的纵横钢管交叉出,可以上下叠交,亦可增设特制的+字接头纵横钢管都与+字接头连接使纵横钢管处于同一平面内可使钢管支撑形成一个平面钢架刚度大受力性能好4.1.3用钢管支撑时,挡墙的围檩可用钢筋混凝土围檩,也可用型钢围檩前者刚度大承载能力高可增大支撑的间距挡墙与围檩之间的空隙宜用细石混凝土填实钢管支撑端部的活络头子和琵琶支撑
4、的具体构造详见下图4.1.4----------------------------------------------page3moc.gnoluhz.w4.2型钢支撑ww4.2.1型钢支撑采用h型钢,用螺栓连接,为工具式钢支撑,现场组装方便,构件标准化,对不同的基坑能按照设计要求进行组合和连接,可重复使用网型钢支撑构造型式如下图所示4.2.24.3钢筋混凝土支撑龙4.3.1钢筋混凝土支撑多用土模或模板随着挖土的进行逐层现浇,截面尺寸和配筋根据支筑撑布置和杆件内力的大小而定,刚度大,变形小,Itcaneffectivelycontrolthedefor
5、mationofretainingwallandthedeformationofsurroundingground,Itshouldbeusedindeepfoundationpitandsurroundingenvironmentdemandingarea4.3.2reinforcedconcretesupportispouredinsite,soitstypecanvarywiththeshapeoffoundationpit,andtherearemanytypes:braceangleTrusssupport,roundarch,ellipsea
6、ndothershapesupport,seethepicturebelowPageand4-----------------------MOC.GNOLUHZ.WWWnetworkTheconcretestrengthof4.3.3reinforcedconcretesupportfortheC30sectionbythecalculationtodeterminethesectionsizeofthepurlinoftenLoong600mm800mmhighandwide800mm1000mmand1000mm1200mmsupportcross-
7、sectionaldimensionscommonlyused600mm800mmhighwidth800mm1000mm800mm1200mmand1000mm1200mmsupportcutBuildingThesurfaceheightandsizetomatchthepurlinreinforcementtothecalculationintheheightdirection.4.3.4forlargesizefoundationpitatthesupportingintersectionpoint,thecolumnshouldbesetupi
8、nverticaldirectiontosupporttheplanesuppo
