受压构件的配筋构造要求

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1、8.8Detailingrequirementsforreinforcement:◆Thediameterofthelongitudinalrodsshouldnotbesmallerthan12mm，andthelargerdiameterrodsarerecommended,andthenumberofrodsinthemembershouldnotbelessthan4，incircularsections,shouldnotbelessthan8.◆Therequirementofthecoveroftheconcreteisintable8-3，andnoles

2、sthand。8.8受压构件的配筋构造要求◆Theclearspacingoflongitudinalbarsshouldnotbelessthan50mm；◆Whentheprefabricatedcolumniscasthorizontally,thesmallestdiametershouldfollowthecode.◆Spacingbetweenlongitudinalbarsmeasuredalongtheperipheryshouldnotexceed350mm.Whenh≥600mm，additionallongitudinalrodswithadiame

3、terof10~16mmshouldbeplacedonthelateralsides.8.8受压构件的配筋构造要求配筋构造：◆柱中纵向受力钢筋的的直径d不宜小于12mm，且选配钢筋时宜根数少而粗，但对矩形截面根数不得少于4根，圆形截面根数不宜少于8根，且应沿周边均匀布置。◆纵向钢筋的保护层厚度要求见表8-3，且不小于钢筋直径d。◆当柱为竖向浇筑混凝土时，纵筋的净距不小于50mm；◆对水平浇筑的预制柱，其纵向钢筋的最小应按梁的规定取值。◆截面各边纵筋的中距不应大于350mm。当h≥600mm时，在柱侧面应设置直径10~16mm的纵向构造钢筋，并相应设置复合箍筋或拉筋。8.

4、8受压构件的配筋构造要求8.8受压构件的配筋构造要求Lateralties：◆Thediameterofthetiesshouldnotbelessthand/4ofthediameterofthelargestlongitudinalrods，andinnocasebelessthan6mm，andthetiesinthecompressivemembershouldbeclosed.◆Thespacingshouldnotbegreaterthantheshortersideofthesectionor400mm；Inatiedandweldedskeletonmem

5、ber,thespacingofthetiesalongthelengthofthemembershouldnotbegreaterthan15dand20drespectively.Heredisthediameterofthesmallestlongitudinalrods。8.8受压构件的配筋构造要求◆Ifthelongitudinalsteelratioisgreaterthan3%，thediameterofthetiesshouldnotbelessthan8mm，Thetiesmaybeweldedintoclosedhoops,orhavebothends

6、bentthrougha135°anglehookandthelengthshouldnotlessthan10timesofthediameteroftheties；Thespacingofthetiesshouldnotbegreaterthanthesmallestlongitudinalrodsor200mm。◆Whenasideisgreaterthan400mmandthenumberoflongitudinalrodsonthesideisinexcessof3bars,orlessthan400mmandthenumberisinexcessof4bars

7、,additionallaterallinkswillbeneedbesidestheclosedties.◆Forthecolumnwithacomplicatedsectionshouldnotbeusethestirrupwithainsideangletoavoidthefailureoftheconcrete.8.8受压构件的配筋构造要求箍筋：◆受压构件中箍筋应采用封闭式，其直径不应小于d/4，且不小于6mm，此处d为纵筋的最大直径。◆箍筋间距不应大于400mm，也不应大于截面短边尺寸；对绑扎钢筋骨架，箍筋间距不应大