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(三)板的长度:选用表中三项允许荷校值[Q],[Q,]和[Q]均包括自重6度区板长为板轴跨减去20:及灌镜重,7、8度区板长为板轴背减去60,(五)选用示例(四)选用方法例1:某办公楼会议室,板骑6.0m,板宽0.6m,楼面均↓,当板上均布的恒被、活我值与本图集设定的数值相符布括荷被2.0kN/m',中,=0.5,均布恒载(不包括自重及覆健几中,≤0.5时,按荷被级别选用,重)为1.35kN/m',试选板型,2.当板上均布的组载.活截值与本图集设定的数值不符7、8度区:选用YKB60一82或>0.5时,可按允许荷载选用,但三项设计荷载值必8度区:选用YKB.,60.一62须同时小于或等于相应的允许荷破值时方能选该型号例2,某工厂糖助用房的楼盖,7度设防,板防6.0m,板板,即必须满足以下条件,宽0.9m,楼面均布活荷截2.0kN/m,-0.7,楼面均布恒黛Q,=Y0,tygQ:≤[Qa]Q,=0,Q≤[Q不包括自定及灌镜重)为·kNm',试选板型。Q=g+Q≤[QJ红袋及女值均与的聚不行,C。门上计算Q.Q,和Q,式中,Q。一承破力级限状态设计时的荷被设计值0.=2.18+0.11+1.44×0.9Q,Q,一正常使用极限状态设计时的荷我短期组合值、=3.59kN/m荷破长期组合值Q.=2.00×0.9=1.80kN/mQ4=3.59×1.2+1.80×1.4@6.83kN/mQ,=3.59+1.80=5.39%N/m校这红分类号总说明页制围级至(会图号)5览.ET
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