1、1、 模板支撑系统计算书柱模板一、工程简况独立柱以截面为800900为例,柱净高6.97m。二、模板方案简述先用15厚多层板作面板,6090木方作背框,间距为250。(立着使用)制作成8009006970定型模板,选择100485.3薄壁槽钢作柱箍。柱箍间距为600mm,中间用对穿螺栓14三、计算3.1 荷载计算:计算新浇筑砼侧压力。公式:F6=0.22gct0b1b2V1/2式中:gc新浇砼重力密度为24KN/m3b1不掺用外加剂取1.0。b2砼坍落度影响修正系数16cm时取1.15V砼浇筑速度2.5(m/h)。t0新浇砼初凝时间按200/( t +15)(t为砼入模温度取200C)F6=
2、0.223243131.153200/(20+15)32.51/2=54.86KN/m2 F6=gcH=244.1=98.6KN/m2取二者较小值: F6=54.86KN/m2 倾倒砼时产生荷载标准值: 取F7= 2.0KN/m2。荷载设计值: F631.2=65.8 KN/m2 F731.4=2.8 KN/m23.2柱模面板计算:按三跨等跨连续梁模式计算:强度计算:Mmax=Km.qL2= Mmax/W式中:Km取0.100q= F61.230.9+ F71.430.9=59.22+2.52=61.74KN/m L背楞间距0.25m W面板截面抵御矩=bh2/6=10.022/6=0.000
3、067Mmax=0.10061.740.252=0.385KN.m=0.385/0.000067=5.76 N/mm 2 (满足)查表(建筑施工手册四版缩印P510)=5.76N/mm 2 =15/1.55=9.7N/mm 2(满足)挠度验算:f=Kf.q. L4/100EI式中:Kf取0.677 q= F6=54.8631.2=65.8 30.9=59.22KN/m2E面板弹性模量为0.96106KN/m2I面板截面惯性矩bh3/12=10.023/12=6.6710-7f=0.677(59.220.254)/ 1005.41066.6710-7=0.000430.25/400=0.0006
4、25 (安全.依据施工手册P515:达成清水墙效果)3.3 背楞计算按五跨等跨连续梁计算:强度计算:Mmax=Km.qL2= Mmax/W式中:Km取0.105q61.740.25=15.435KN/m L柱箍间距0.6mW方木截面弹性抵御矩=bh2/6=0.050.12/6=0.00008333Mmax=0.10516.050.62=0.583KN.m =0.607/0.00008333=7006KN/m 2()=1KN/m 2 (满足)挠度验算:f=Kf.q. L4/100EI式中:Kf取0.644q59.220.25=14.8KN/mE木方弹性模量为9106KN/m2I木方截面惯性矩bh
5、3/12=0.050.13/12=0.f= 0.64414.80.64/ 10091060.=0.000330.6/1000=0.0006 (安全)3-4 柱箍计算:柱箍按二跨梁计算;柱截面800900,计算跨度为:0.8+0.0522=0.904m槽钢强度计算:Mmax=Km.qL2= Mmax/ rx Wnx式中:Km取0.125q61.740.6=37.04KN/m L柱箍间距0.904/2=0.452mrx弯距作用平面内截面塑性发展系数受振动荷载取1.0。Wnx弯距作用面内受拉纤维截面抵御距 39.7103 (mm3)Mmax=0.12537.040.4522=0.945KN.m=0.
6、945/39.7103=23.8215N/m m2挠度验算:V= Kf.q. L4/100EIKf0.521q 59.220.6=35.53 KN/mE 弹性模量(KN/m2)=2.1108I 槽钢截面惯性矩 =1.9810-6V=0.52135.530.7024/1002.061081.9810-6=0.00021.4/500=0.0028 (满足)对拉螺栓计算: 14螺栓承载力为N=Asf=33.08KN 式中: As=3.1472 f-钢筋强度设计值 :215 N/mm2 每根螺栓承受荷载:61.740.60.9/3=11.11KN33.08 KN3.4双支钢管48*3.5大横杆计算按五
7、跨等跨连续梁计算强度计算:Mmax=Km.qL= Mmax/W式中:Km取0.171q400.2500.5=5KN/m L螺栓间距0.5mW钢管截面抵御矩0.000005082Mmax=0.17150.5=0.428KN.m=0.428/0.00001016=42125KN/m2 =215000KN/m2 (满足)挠度验算:f=Kf.q. L3/100EI式中:Kf取1.097 L取0.5m q37.470.2500.5=4.69KNE钢材弹性模量为2.06105N/mm2I双支钢管截面惯性矩2*(d4-d14)/64=12.19104(mm4)f= 1.0974.691030.53109/
8、1002.0610512.19104=0.128mm500/400=1.25mm (安全)3.5 对拉螺栓计算: 14螺栓承载力为N = As f =32.21KN式中: As=3.1472 f-钢筋强度设计值 :215 N/mm2 每根螺栓承受荷载:400.50.5=10KN32.31 KN (安全)梁模板计算5.00米平台反梁模板计算按1900900(扣除底板厚度)截面计算3-1 荷载计算:振捣砼产生荷载 P5 =4KN/m2F6=0.22gct0b1b2V1/2F6=0.222411.15200/(20+15)11/2=34.7KN/m2F5=4.0KN/m2考虑荷载分项系数和折减系数:
9、34.71.20.9+41.40.9=42.52KN/m23. 2 侧模面板计算:15厚多层板面板按两跨等跨连续梁计算:强度计算:Mmax=Km.qL2式中:Km取0.125q42.52KN/m2 L横楞间距0.30mMmax=0.12542.520.252=0.332KN.m= Mmax/WW截面弹性抵御矩=bh2/6=10.0152/6=3.7510-5=0.332/3.7510-5=8858KN/m2=15/1.55=9.7N/mm 2(满足) 挠度验算:f=Kf. qL4/100EI式中:Kf取0.521q34.7KN/m L0.25mE=0.97.5106KN/m2I= bh3/12
10、=1.90.0153/12=6.410-6f=0.52134.70.254/1006.751066.410-6=0.0001850.25/400=0.000625 (安全)3. 3 侧模背楞计算: 50100木方按五跨连续梁计算。强度计算:Mmax=Km.qL2式中:Km取0.105q42.520.25=11.38KN/m L短钢管竖楞间距0.6mMmax=0.10511.380.62=0.43KN.m= Mmax/W=0.43/0.00008333=5160KN/m 21KN/m 2 (满足)挠度验算:f=Kf. qL4/100EIKf取0.644 q=34.70.25=8.68KN/mE木
11、方为11106KN/m2 I木方截面惯性矩bh3/12=0.0000042m3f=0.6448.680.64/100111060.0000042=0.000160.6/400=0.0015 (满足) 370*1100框梁模板以梁截面较大为计算依据9004-1 荷载计算:模板及支架自重 P1 =0.75 KN/m2 新浇砼重 P2=242=48KN/m2钢筋重 P3 =1.52=3KN/m2振捣砼产生荷载 P5 =2KN/m2考虑荷载分项系数和折减系数:荷载设计值:(0.75+48+3)1.20.9=55.9KN/m2 21.40.9=2.52KN/m2 4-2 底模面板计算15厚多层板面板,次
12、龙骨50100木方间距150,按两跨等跨连续计算:强度计算:Mmax=Km. qL2 注:Km取0.125q55.9+2.52=58.4KN/mL背楞间距150mmMmax =0.12558.40.152=0.16KN.mW多层板截面抵御矩bh2/6=10.0152/6=0.0000375= Mmax/W=0.16/0.0000375=4266.7KN/m2=15/1.55=9.7N/mm 2(满足)挠度验算:f=Kf(q4/100EI) 式中:Kf取0.521qP1+ P2+ P3=31.1KN/m2E面板弹性模量=6.75106KN/m2I面板截面惯性矩=bh3/12=10.0153/12
13、=0.f=0.52131.10.154/1007.651060.=0.0000380.15/400=0.00038 (安全,满足清水混凝土表观质量要求) 4-3 背楞计算次龙骨用5090木方按五跨连续梁计算:强度计算:Mmax=Km.qL2式中:Km取0.105q33.620.15=5.04KN/mL钢管横楞间距0.6mMmax=0.1055.040.62=0.191KN.m= Mmax/WW方木截面弹性抵御矩=bh2/6=0.050.092/6=0.000083=0.191/0.000083=2304KN/m 21KN/m 2 (满足)挠度验算:f=Kf.q. L4/100EI式中:Kf取0
14、.644L取0.6m q31.10.15=4.665KN/mE木方弹性模量为11106I木方截面惯性矩bh3/12=0.050.093/12=0.0000042f= 0.6444.6650.64/ 100111060.0000042=0.0000840.6/400=0.0015 (安全)4-4横楞计算:横楞选择483.5钢管,间距600,顶撑间距500。按两跨间连续梁计算(2个集中荷载)。强度计算:Mmax= Km.FL式中:Km=0.156F5.040.6=3.04KNL顶撑间距0.5mMmax=0.1563.040.5=0.237KN.m= Mmax/WW483.5钢管截面弹性抵御矩0.0
15、0000508m3=0.237/0.00000508=46.65N/ m m 2205N/m m 2 (满足)挠度验算:f=Kf.q. L3/100EI式中:Kf取0.912L取0.5m q4.6650.6=2.8KNE钢材弹性模量为2.06105N/mm2I钢管截面惯性矩(d4-d14)/64=12.19104(mm4)f= 0.9122.81030.53109/ 1002.0610512.19104=0.127500/400=1.25mm (安全)4-5钢管顶撑随受钢管传输来集中垂直荷载 验算其稳定性:N/AfKAKH 式中: N轴心压力3.040.6882+3.04=5.13KNA钢管截
16、面积=489mm2稳定系数。先求=h/I=1800/15.74=144 查表=0.489f钢管抗压强度设计值205N/mm2KA和立杆截面相关调整系数取0.85。KH和立杆高度相关调整系数取0.8。5.13/0.489489=21.5N/mm2205N0.850.8=139.4N/mm2(满足)梁侧面模板参考地梁侧面模板支设。顶板模板验算图 楼板支撑架立面简图图 楼板支撑架立杆稳定性荷载计算单元 2.1 荷载计算模板及支架自重 0.75 KN/m2 新浇砼空心板自重 240.25=6KN/m2施工荷载 2.5KN/m2考虑荷载分项系数和折减系数:(0.75+6)1.20.9=7.29KN/m2
17、 2.51.40.9=3.15KN/m2 2.2面板计算面板为受弯结构,需要验算其抗弯强度和刚度。模板面板根据五跨连续梁计算。强度计算:Mmax=Km. qL2 =Mmax/W注:Km取0.105q7.29+2.52=9.81KN/mL0.25 mW木胶板截面抵御矩=bh2/6=10.0152/6=0.0000375Mmax=0.1059.810.252=0.064KN.m=0.064/0.0000375=1716KN/m2 =15/1.55=9.7N/mm 2 (满足)挠度验算:f= Km q4/100EI 式中:Km:0.644 q:7.29 KN/mE木胶板弹性模量为7.51060.9K
18、N/m2I面板截面惯性矩bh3/12=10.0153/12=0.-0.25mf=0.6449.810.254/1007.51060.90.=0.00010.25/400=0.000625 (安全)2.3小龙骨计算按五跨等跨连续梁计算:强度计算:Mmax=Km.qL2= Mmax/W式中:Km取0.105q9.810.25=2.45KN/mL大龙骨间距1200W方木截面抵御矩=bh2/6=0.050.12/6=0.00008333Mmax=0.1052.451.22=0. 37KN.m=0.37/0.00008333=4445KN/m 21KN/m 2 (满足)挠度验算:f=Kf.q.L4/10
19、0EI式中:Kf取0.644L取1.2m q7.290.25=1.823KN/mE木方弹性模量为11106I木方截面惯性矩bh3/12=0.050.13/12=0.f= (0.6441.8231.24)/ (100111060.)=0.000531.2/400=0.003 (安全)24大龙骨计算 按五跨等跨连续梁计算。强度计算:Mmax=KmqL2= Mmax/W式中:Km取0.105q9.811.2=11.77KN/mL立杆间距0.5W方木截面弹性抵御矩bh2/6=0.10.12/6=0.000166Mmax=0.10511.770.52=0.31KN.m=0.31/0.000166=186
20、7.5KN/m21KN/m 2 (满足)挠度验算:f=Kf. qL4/100EI式中:Kf取0.644q7.291.2=8.75KNL:0.5 mE:木方弹性模量11106 N/mm 2 I木方截面弹性惯性矩bh3/12=0.10.13/12=0.00000833f=(0.6448.750.54)/100111060.00000833=0.001271.2/400=0.003 (安全)2.5支撑架立杆验算 验算其稳定性:N/AfKAKH 式中: N轴心压力v= Kf *ql=1.13*11.77*1.2=15.96KN稳定系数=h/I=1800/15.78=144 =0.489A钢管截面积=489mm2f钢管抗压强度设计值205N/mm2KA和立杆截面相关调整系数取0.85。KH和立杆高度相关调整系数取0.8。N/A =15960/0.489489=66.7N/mm2205N0.850.8=139.4N/mm2(满足)
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