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[深圳]综合性文化场馆工程高支模施工方案.docq1=0.9max[1.2(G1k+(G3k+G2k)×h)+1.4Q1k,1.35(G1k+(G3k+G2k)×h)+1.4×0.7Q1k]×b=0.9×max[1.2×(0.3+(1.1+24)×1.5)+1.4×2.5,1.35×(0.3+(1.1+24)×1.5)+1.4×0.7×2.5]×0.2=9.66kN/m
因此,q1静=0.9×1.35(G1k+(G3k+G2k)×h)×b=0.9×1.35×(0.3+(1.1+24)×1.5)×0.2=9.22kN/m
q1活=0.9×1.4×0.7×Q1k×b=0.9×1.4×0.7×2.5×0.2=0.44kN/m
M1=0.107q1静L2+0.121q1活L2=0.107×9.22×0.452+0.121×0.44×0.452=0.21kN·m
GB/T 36548-2018标准下载 q2=0.9×1.35×G1k×b=0.9×1.35×0.3×0.2=0.07kN/m
p=0.9×1.4×0.7×Q1k=0.9×1.4×0.7×2.5=2.2kN
M2=max[0.077q2L2+0.21pL,0.107q2L2+0.181pL]=max[0.077×0.07×0.452+0.21×2.2×0.45,0.107×0.07×0.452+0.181×2.2×0.45]=0.21kN·m
M3=max[q1L12/2,q2L12/2+pL1]=max[9.66×0.12/2,0.07×0.12/2+2.2×0.1]=0.22kN·m
Mmax=max[M1,M2,M3]=max[0.21,0.21,0.22]=0.22kN·m
σ=Mmax/W=0.22×106/60750=3.64N/mm2≤[f]=15.44N/mm2
V1=0.607q1静L+0.62q1活L=0.607×9.22×0.45+0.62×0.44×0.45=2.64kN
V2=0.607q2L+0.681p=0.607×0.07×0.45+0.681×2.2=1.52kN
V3=max[q1L1,q2L1+p]=max[9.66×0.1,0.07×0.1+2.2]=2.21kN
Vmax=max[V1,V2,V3]=max[2.64,1.52,2.21]=2.64kN
τmax=3Vmax/(2bh0)=3×2.64×1000/(2×90×45)=0.98N/mm2≤[τ]=1.78N/mm2
q=(G1k+(G3k+G2k)×h)×b=(0.3+(24+1.1)×1.5)×0.2=7.59kN/m
跨中νmax=0.632qL4/(100EI)=0.632×7.59×4504/(100×9350×2733800)=0.08mm≤[ν]=l/400=450/400=1.12mm
因主梁2根合并,则抗弯、抗剪、挠度验算荷载值取半。
1、小梁最大支座反力计算
Q1k=1.5kN/m2
q1=0.9max[1.2(G1k+ (G3k+G2k)×h)+1.4Q1k,1.35(G1k+(G3k+G2k)×h)+1.4×0.7Q1k]×b=0.9max[1.2×(0.5+(1.1+24)×1.5)+1.4×1.5,1.35×(0.5+(1.1+24)×1.5)+1.4×0.7×1.5]×0.2=9.54kN/m
q1静=0.9×1.35(G1k+ (G3k+G2k)×h)×b=0.9×1.35×(0.5+(1.1+24)×1.5)×0.2=9.27kN/m
q1活=0.9×1.4×Q1k×b=0.9×1.4×1.5×0.2=0.38kN/m
q2=(G1k+ (G3k+G2k)×h)×b=(0.5+(1.1+24)×1.5)×0.2=7.63kN/m
承载能力极限状态
按四跨连续梁,Rmax=(1.143q1静+1.223q1活)L=1.143×9.27×0.45+1.223×0.38×0.45=4.98kN
按悬臂梁,R1=q1l=9.54×0.1=0.95kN
R=max[Rmax,R1]/2=2.49kN;
正常使用极限状态
按四跨连续梁,Rmax=1.143q2L=1.143×7.63×0.45=3.92kN
按悬臂梁,R1=q2l=7.63×0.1=0.76kN
R=max[Rmax,R1]/2=1.96kN;
计算简图如下:
主梁弯矩图(kN·m)
Mmax=0.25kN·m
σ=Mmax/W=0.25×106/4490=55.46N/mm2≤[f]=205N/mm2
主梁剪力图(kN)
Vmax=3.41kN
τmax=2Vmax/A=2×3.41×1000/424=16.07N/mm2≤[τ]=125N/mm2
主梁变形图(mm)
νmax=0.05mm
跨中νmax=0.05mm≤[ν]=450/400=1.12mm
悬挑段νmax=0.04mm≤[ν]=100/400=0.25mm
顶部立杆段:l01=kμ1(hd+2a)=1×1.215×(1500+2×500)=3037.5mm
非顶部立杆段:l02=kμ2h =1×1.951×1500=2926.5mm
λ=l0/i=3037.5/15.9=191.04≤[λ]=210
长细比满足要求!
2、立柱稳定性验算
顶部立杆段:l01=kμ1(hd+2a)=1.155×1.215×(1500+2×500)=3508.313mm
λ1=l01/i=3508.313/15.9=220.649,查表得,φ1=0.15
Mw=0.92×1.4ωklah2/10=0.92×1.4×0.22×0.45×1.52/10=0.02kN·m
Nw=0.9[1.2ΣNGik+0.9×1.4Σ(NQik+Mw/lb)]=0.9×[1.2×(0.5+(24+1.1)×1.5)+0.9×1.4×1]×0.45×0.45+0.92×1.4×0.02/0.45=8.64kN
f= Nw/(φA)+ Mw/W=8635.54/(0.15×424)+0.02×106/4490=141.3N/mm2≤[f]=205N/mm2
非顶部立杆段:l02=kμ2h =1.155×1.951×1500=3380.108mm
λ2=l02/i=3380.108/15.9=212.585,查表得,φ2=0.161
非顶部立杆段:l02=kμ2h =1.155×1.951×1500=3380.108mm
λ2=l02/i=3380.108/15.9=212.585,查表得,φ2=0.161
Mw=0.92×1.4ωklah2/10=0.92×1.4×0.22×0.45×1.52/10=0.02kN·m
Nw=0.9[1.2ΣNGik+0.9×1.4Σ(NQik+Mw/lb)]=0.9×[1.2×(0.75+(24+1.1)×1.5)+0.9×1.4×1]×0.45×0.45+0.92×1.4×0.02/0.45=8.69kN
f= Nw/(φA)+ Mw/W=8690.21/(0.16×424)+0.02×106/4490=132.83N/mm2≤[f]=205N/mm2
按上节计算可知,可调托座受力N=8.64kN≤[N]=30kN
新浇混凝土对模板的侧压力标准值G4k=min[0.22γct0β1β2v1/2,γcH]=min[0.22×24×4×1×1×21/2,24×1.6]=min[29.87,38.4]=29.87kN/m2
承载能力极限状态设计值S承=0.9max[1.2G4k+1.4Q2k,1.35G4k+1.4×0.7Q2k]=0.9max[1.2×29.87+1.4×4,1.35×29.87+1.4×0.7×4]=0.9max[41.44,44.24]=0.9×44.24=39.82kN/m2
正常使用极限状态设计值S正=G4k=29.87 kN/m2
设计简图如下:
梁截面宽度取单位长度,b=1000mm。W=bh2/6=1000×152/6=37500mm3,I=bh3/12=1000×153/12=281250mm4。面板计算简图如下:
q1=bS承=1×39.82=39.82kN/m
q1静=0.9×1.35×G4k×b=0.9×1.35×29.87×1=36.29kN/m
q1活=0.9×1.4×0.7×Q2k×b=0.9×1.4×0.7×4×1=3.53kN/m
Mmax=0.107q1静L2+0.121q1活L2=0.107×36.29×0.162+0.121×3.53×0.162=0.12kN·m
σ=Mmax/W=0.12×106/37500=3.13N/mm2≤[f]=15N/mm2
q=bS正=1×29.87=29.87kN/m
νmax=0.632qL4/(100EI)=0.632×29.87×1654/(100×10000×281250)=0.05mm≤165/400=0.41mm
3、最大支座反力计算
承载能力极限状态
Rmax=1.143×q1静×l左+1.223×q1活×l左=1.143×36.29×0.16+1.223×3.53×0.16=7.56kN
正常使用极限状态
R'max=1.143×l左×q=1.143×0.16×29.87=5.63kN
计算简图如下:
跨中段计算简图
悬挑段计算简图
q=7.56kN/m
Mmax=max[0.1×q×l2,0.5×q×l12]=max[0.1×7.56×0.62,0.5×7.56×0.32]=0.34kN·m
σ=Mmax/W=0.34×106/60750=5.6N/mm2≤[f]=15.44N/mm2
Vmax=max[0.6×q×l,q×l1]=max[0.6×7.56×0.6,7.56×0.3]=2.72kN
τmax=3Vmax/(2bh0)=3×2.72×1000/(2×45×90)=1.01N/mm2≤[τ]=1.78N/mm2
q=5.63kN/m
ν1max=0.677qL4/(100EI)=0.677×5.63×6004/(100×9350×2733800)=0.19mm≤600/400=1.5mm
ν2max=qL4/(8EI)=5.63×3004/(8×9350×2733800)=0.22mm≤300/400=0.75mm
4、最大支座反力计算
承载能力极限状态
Rmax=max[1.1×7.56×0.6,0.4×7.56×0.6+7.56×0.3]=4.99kN
正常使用极限状态
R'max=max[1.1×5.63×0.6,0.4×5.63×0.6+5.63×0.3]=3.72kN
因主梁2根合并,则抗弯、抗剪、挠度验算荷载值取半。
计算简图如下:
同前节计算过程,可依次解得:
承载能力极限状态:R1=0.86kN,R2=2.49kN,R3=2.05kN,R4=2.05kN,R5=2.05kN,R6=2.05kN,R7=2.05kN,R8=2.49kN,R9=0.86kN
正常使用极限状态:R'1=0.64kN,R'2=1.86kN,R'3=1.51kN,R'4=1.51kN,R'5=1.51kN,R'6=1.51kN,R'7=1.51kN,R'8=1.86kN,R'9=0.64kN
主梁弯矩图(kN·m)
σmax=Mmax/W=0.37×106/4490=83.07N/mm2≤[f]=205 N/mm2
梁左侧剪力图(kN)
τmax=2Vmax/A=2×3.72×1000/424=17.57N/mm2≤[τ]=120 N/mm2
梁左侧变形图(mm)
νmax=0.28mm≤525/400=1.31 mm
同主梁计算过程,可知对拉螺栓受力N=0.95×7.4×2=14.06kN≤Ntb=17.8kN
设计简图如下:
根据《建筑施工模板安全技术规范》5.2.1"面板可按简支跨计算"的规定,另据现实,楼板面板应搁置在梁侧模板上,因此本例以简支梁,取1m单位宽度计算。计算简图如下:
W=bh2/6=1000×18×18/6=54000mm3,I=bh3/12=1000×18×18×18/12=486000mm4
q1=0.9max[1.2(G1k+ (G3k+G2k)×h)+1.4Q1k,1.35(G1k+ (G3k+G2k)×h)+1.4×0.7Q1k]×b=0.9max[1.2×(0.1+(1.1+24)×0.18)+1.4×2.5,1.35×(0.1+(1.1+24)×0.18)+1.4×0.7×2.5] ×1=8.14kN/m
q2=0.9×1.2×G1k×b=0.9×1.2×0.1×1=0.11kN/m
p=0.9×1.4×Q1K=0.9×1.4×2.5=3.15kN
Mmax=max[q1l2/8,q2l2/8+pl/4]=max[8.14×0.32/8,0.11×0.32/8+3.15×0.3/4]= 0.24kN·m
σ=Mmax/W=0.24×106/54000=4.4N/mm2≤[f]=18N/mm2
q=(G1k+(G3k+G2k)×h)×b=(0.1+(1.1+24)×0.18)×1=4.62kN/m
ν=5ql4/(384EI)=5×4.62×3004/(384×10000×486000)=0.1mm≤[ν]=l/400=300/400=0.75mm
因[B/lb]取整=[6000/900]取整=6,按四等跨连续梁计算,又因小梁较大悬挑长度为100mm,因此需进行最不利组合,计算简图如下:
q1=0.9max[1.2(G1k+(G3k+G2k)×h)+1.4Q1k,1.35(G1k+(G3k+G2k)×h)+1.4×0.7Q1k]×b=0.9×max[1.2×(0.3+(1.1+24)×0.18)+1.4×2.5,1.35×(0.3+(1.1+24)×0.18)+1.4×0.7×2.5]×0.3=2.51kN/m
因此,q1静=0.9×1.2(G1k+(G3k+G2k)×h)×b=0.9×1.2×(0.3+(1.1+24)×0.18)×0.3=1.56kN/m
q1活=0.9×1.4×Q1k×b=0.9×1.4×2.5×0.3=0.94kN/m
M1=0.107q1静L2+0.121q1活L2=0.107×1.56×0.92+0.121×0.94×0.92=0.23kN·m
q2=0.9×1.2×G1k×b=0.9×1.2×0.3×0.3=0.1kN/m
p=0.9×1.4×Q1k=0.9×1.4×2.5=3.15kN
M2=max[0.077q2L2+0.21pL,0.107q2L2+0.181pL]=max[0.077×0.1×0.92+0.21×3.15×0.9,0.107×0.1×0.92+0.181×3.15×0.9]=0.6kN·m
M3=max[q1L12/2,q2L12/2+pL1]=max[2.51×0.12/2,0.1×0.12/2+3.15×0.1]=0.32kN·m
Mmax=max[M1,M2,M3]=max[0.23,0.6,0.32]=0.6kN·m
σ=Mmax/W=0.6×106/60750=9.9N/mm2≤[f]=15.44N/mm2
V1=0.607q1静L+0.62q1活L=0.607×1.56×0.9+0.62×0.94×0.9=1.38kN
V2=0.607q2L+0.681p=0.607×0.1×0.9+0.681×3.15=2.2kN
V3=max[q1L1,q2L1+p]=max[2.51×0.1,0.1×0.1+3.15]=3.16kN
Vmax=max[V1,V2,V3]=max[1.38,2.2,3.16]=3.16kN
τmax=3Vmax/(2bh0)=3×3.16×1000/(2×90×45)=1.17N/mm2≤[τ]=1.78N/mm2
q=(G1k+(G3k+G2k)×h)×b=(0.3+(24+1.1)×0.18)×0.3=1.45kN/m
跨中νmax=0.632qL4/(100EI)=0.632×1.45×9004/(100×9350×2733800)=0.23mm≤[ν]=l/400=900/400=2.25mm
因主梁2根合并,则抗弯、抗剪、挠度验算荷载值取半。
1、小梁最大支座反力计算
Q1k=1.5kN/m2
q1=0.9max[1.2(G1k+ (G3k+G2k)×h)+1.4Q1k,1.35(G1k+(G3k+G2k)×h)+1.4×0.7Q1k]×b=0.9max[1.2×(0.5+(1.1+24)×0.18)+1.4×1.5,1.35×(0.5+(1.1+24)×0.18)+1.4×0.7×1.5]×0.3=2.23kN/m
q1静=0.9×1.35(G1k+ (G3k+G2k)×h)×b=0.9×1.35×(0.5+(1.1+24)×0.18)×0.3=1.83kN/m
q1活=0.9×1.4×Q1k×b=0.9×1.4×1.5×0.3=0.57kN/m
q2=(G1k+ (G3k+G2k)×h)×b=(0.5+(1.1+24)×0.18)×0.3=1.51kN/m
承载能力极限状态
按四跨连续梁,Rmax=(1.143q1静+1.223q1活)L=1.143×1.83×0.9+1.223×0.57×0.9=2.51kN
按悬臂梁,R1=q1l=2.23×0.1=0.22kN
R=max[Rmax,R1]/2=1.25kN;
正常使用极限状态
按四跨连续梁,Rmax=1.143q2L=1.143×1.51×0.9=1.55kN
按悬臂梁,R1=q2l=1.51×0.1=0.15kN
R=max[Rmax,R1]/2=0.77kN;
计算简图如下:
主梁弯矩图(kN·m)
Mmax=0.37kN·m
σ=Mmax/W=0.37×106/4490=82N/mm2≤[f]=205N/mm2
主梁剪力图(kN)
Vmax=2.32kN
τmax=2Vmax/A=2×2.32×1000/424=10.95N/mm2≤[τ]=125N/mm2
主梁变形图(mm)
νmax=0.51mm
跨中νmax=0.51mm≤[ν]=900/400=2.25mm
悬挑段νmax=0.21mm≤[ν]=100/400=0.25mm
顶部立杆段:l01=kμ1(hd+2a)=1×1.215×(1500+2×500)=3037.5mm
非顶部立杆段:l02=kμ2h =1×1.951×1500=2926.5mm
λ=l0/i=3037.5/15.9=191.04≤[λ]=210
长细比满足要求!
2、立柱稳定性验算
顶部立杆段:l01=kμ1(hd+2a)=1.155×1.215×(1500+2×500)=3508.313mm
λ1=l01/i=3508.313/15.9=220.649,查表得,φ1=0.15
Mw=0.92×1.4ωklah2/10=0.92×1.4×0.22×0.9×1.52/10=0.05kN·m
Nw=0.9[1.2ΣNGik+0.9×1.4Σ(NQik+Mw/lb)]=0.9×[1.2×(0.5+(24+1.1)×0.18)+0.9×1.4×1]×0.9×0.9+0.92×1.4×0.05/0.9=5.37kN
f= Nw/(φA)+ Mw/W=5370.78/(0.15×424)+0.05×106/4490=95.49N/mm2≤[f]=205N/mm2
非顶部立杆段:l02=kμ2h =1.155×1.951×1500=3380.108mm
λ2=l02/i=3380.108/15.9=212.585,查表得,φ2=0.161
SL136-2017 混凝土热学参数测定仪校验方法.pdf 非顶部立杆段:l02=kμ2h =1.155×1.951×1500=3380.108mm
λ2=l02/i=3380.108/15.9=212.585,查表得,φ2=0.161
Mw=0.92×1.4ωklah2/10=0.92×1.4×0.22×0.9×1.52/10=0.05kN·m
GB/T 39550-2020标准下载 Nw=0.9[1.2ΣNGik+0.9×1.4Σ(NQik+Mw/lb)]=0.9×[1.2×(0.75+(24+1.1)×0.18)+0.9×1.4×1]×0.9×0.9+0.92×1.4×0.05/0.9=5.59kN
f= Nw/(φA)+ Mw/W=5589.48/(0.16×424)+0.05×106/4490=92.93N/mm2≤[f]=205N/mm2
按上节计算可知,可调托座受力N=5.37kN≤[N]=30kN