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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,板、柱、梁,钢筋工程计算,板、柱、梁,【例1】计算钢筋混凝土板的钢筋用量。,【例1】计算钢筋混凝土板的钢筋用量。,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,解,1.计算钢筋长度,,现浇板砼强度等级C25,保护层厚度C=20mm。,(1)沿长方向钢筋,8200,单根钢筋长,1,=1.3,1.762,0.02,2,6.250.008,=3.12,(m),根数,N,1,=,(2.5,0.240.1,),0.2,1=12(根),钢筋长,L,1,=,1,N,1,=3.12,12=37.44,(m),解,(2)沿短方向钢筋,8200,2,=2.5,0.24 0.02,2,2,6.25 0.008,=2.8(m),N,1,=(1.3,1.7630.120.12)0.22,=15(根),L,2,=2.815=42(m),(3)负弯矩筋,6,负筋长度,=图示平直部分长度,2(板厚,2C1.75d),左右两边负筋长度,(2)沿短方向钢筋8200,单根长,3,=,0.40.120.02,2(0.08,20.021.750.006),=0.56(m),根数N,3,=,(2.50.240.1)0.212,=24(根),总长L,3,=0.5624=13.44(m),上下两边(沿外墙)负筋长度,单根长,4,=,0.40.240.02,2(0.08,20.021.750.006),=0.68(m),单根长3=0.40.120.02,根数N,4,=,(1.31.7630.120.12),0.222,=15(根)2,=30(根),总长L,4,=0.6830=20.4(m),中间小肋梁(2,2断面)负筋长度,单根长,5,=,0.420.12,2(0.08,20.021.750.006),=0.98(m),根数N,5,=,(2.50.240.1)0.21=12(根),总长L,5,=0.9812=11.76(m),根数N4=(1.31.7630.120.12),按需要,对负筋增设发布筋,6400,总长度L,6,=(2.5,0.24)7,(1.31.760.24)4,=27.1(m),(4)断面22肋梁,4,14钢筋总长,L,7,=,(3.06,0.022,26.250.014,)4,=12.78(m),箍筋,6200,8,=0.24,4,8,0.03,18,0.006,=0.828,(m),按需要,对负筋增设发布筋6400,N8=(3.0630.122,0.1)0.22,=15(根),总长L,8,=0.82815=12.42(m),(5)断面22肋梁(120240),4,12钢筋总长,L,9,=(2.50.240.0226.2520.012),4,=11.4(m),N8=(3.0630.1220.1)0.22,箍筋,6200,10,=(0.120.24)280.03180.006,=0.588(m),N10=,(2.50.2420.05)0.21=12(根),L,10,=0.58812=7.06(m),箍筋6200,2.钢筋消耗量,规格,6,8,12,14,代号,L,3,、L,4,、L,5,、L,6,、L,8,、L,10,L,1,、L,2,L,9,L,7,长度,(m),13.4420.411.7627.112.427.0692.18,37.444279.44,11.4,12.78,质量,(kg),92.180.22220.46,79.44,0.39531.38,11.4,0.88810.12,12.781.208,15.44,2.钢筋消耗量 代号L,【例2】,图为某三层现浇框架柱,(砼C25)立面和断面配筋图,底,层柱断面尺寸为350350,纵向,受力钢筋 4,22,(螺纹钢),,受力钢筋下端与柱基插筋搭接,搭接长度800mm。与柱正交的是,“,”形整,体现浇梁,,试计算该柱钢筋工程量。,【例2】图为某三层现浇框架柱,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,柱板梁钢筋工程量计算课件,解,1.计算钢筋长度,(C=30mm,),(1)底层纵向受力筋,22(,级钢筋),每根筋长l,1,=3.070.5,0.8,=4.37(m),总长L,1,=4.374=17.48(m),(2)二层纵向受力筋,22,(,级钢筋),每根筋长l,2,=3.2,0.6,=3.8,(m),总长L,2,=3.8,4=15.2,(m),解 1.计算钢筋长度(C=30mm),(3)三层纵筋,16,(,级钢筋),每根筋长l,3,=3.2,0.03=3.17(m),总长L,3,=3.17,4=12.68,(m),(4)柱基插筋,22,(,级钢筋),每根筋长l4=0.8+1.5+0.20.04,=2.46(m),总长L4=2.464=9.84,(m),(3)三层纵筋16(级钢筋),(5)箍筋,6,,按03G101-1,考虑135,弯钩,二层楼面以下,单根箍筋长,lg,1,=0.35480.03180.006,=1.268(m),箍筋根数,Ng,1,=0.8/0.11(3.07,0.8,0.5)/0.2=914=23(根),总长,Lg,1,=1.26823=29.16(m),(5)箍筋6,按03G101-1,考虑135弯钩,二层楼面至三层楼顶面,,单根,箍筋长,lg,2,=0.25480.03180.006,=0.868(m),箍筋根数 Ng,2,=(0.8,0.6)0.1,(3.22,0.80.6,0.03),0.2=1425=39(根),总长Lg,2,=0.86839=33.85(m),箍筋总长度,Lg=Lg,1,Lg,2,=29.1633.85,=63.01(m),二层楼面至三层楼顶面,单根箍筋长,2.钢筋图纸用量,22=,(17.48,15.29.84,),2.984,=126.88 (kg,),16,=12.68,1.578=20.01,(kg),6,=63.01,0.222=13.99,(kg),2.钢筋图纸用量,【例3】,计算某办公楼二根框架梁KL1的钢筋工程量。建筑按四级抗震设计,砼强度等级为C25,柱截面尺寸:KZ1 450mm450mm,KZ2 400mm400mm。,【例3】计算某办公楼二根框架梁KL1的钢筋工程,柱板梁钢筋工程量计算课件,解砼为C25,则柱保护层C=30mm,梁保护层C=25mm,,钢筋采用HRB335,抗震等级四,lae=la=34d,搭接长度为1.234d。,(1)受力纵筋,梁上部纵筋2,20,钢筋长度超过8m时,,考虑一个搭接接头,搭接长度及配筋构造按03G101-1规定计算。,解砼为C25,则柱保护层C=30mm,梁保护,单根长l,1,=,(4,23.76,)0.45,2,0.03,2,15d,1.2,34d,=13.566,(m),上部纵筋长L,1,=13.5662,=27.132(m),上部纵筋质量(2,20,),M,1,=27.1322.47kg/m2,=134.03(kg),单根长l1=(423.76)0.45,梁下部受力纵筋(3,22,):,采用在中间支座锚固,两端跨单根长,l,21,=40.2250.2(0.03,0.025柱纵筋)15d34d2,=10.096(m),中间跨单根长,l,22,=3.760.4,2lae,=3.760.4234d,=4.856(m),梁下部受力纵筋(322):采用在中,下部纵筋长,l,2,=(10.096,4.856),3,=44.856(m),下部纵筋质量,M,2,=44.856 m2.98 kg/m,2,=267.34(kg),(2)箍筋,8,,按03G101-1,考虑弯钩135,。,下部纵筋长,单根长度按,l=(0.25,0.4,)280.025,280.008=1.524(m),加密区箍筋根数,,按规定,加密区离支座750mm,,则:,N,1,=,(0.750.05),0.1,1,6,=48 (根),单根长度按,非加密区箍筋根数,N2=,(40.2250.2,0.75,2,),0.21,2,(3.76,0.4,0.75,2,)0.21=29(根),箍筋质量(,8,),M3=(48,29)1.5240.395,2,=92.70(kg),非加密区箍筋根数,柱板梁钢筋工程量计算课件,
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