江苏某商住楼地下室模板施工方案

江苏某商住楼地下室模板施工方案
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江苏某商住楼地下室模板施工方案

V3=max[q1L1,q2L1+p]=max[3.075×0.25,0.097×0.25+3.15]=3.174kN

Vmax=max[V1,V2,V3]=max[1.691,2.198,3.174]=3.174kN

τmax=3Vmax/(2bh0)=3×3.174×1000/(2×80×60)=0.992N/mm2≤[τ]=1.78N/mm2

TCECS 710-2020标准下载q=(G1k+(G3k+G2k)×h)×b=(0.3+(24+1.1)×0.25)×0.3=1.972kN/m

跨中νmax=0.632qL4/(100EI)=0.632×1.972×9004/(100×9350×2560000)=0.342mm≤[ν]=l/250=900/250=3.6mm

悬臂端νmax=qL4/(8EI)=1.972×2504/(8×9350×2560000)=0.04mm≤[ν]=l1/250=250/250=1mm

主梁弹性模量E(N/mm2)

主梁抗弯强度设计值[f](N/mm2)

主梁抗剪强度设计值[τ](N/mm2)

主梁截面惯性矩I(cm4)

主梁截面抵抗矩W(cm3)

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)×0.25)+1.4×1.5,1.35×(0.5+(1.1+24)×0.25)+1.4×0.7×1.5]×0.3=2.866kN/m

q1静=0.9×1.35(G1k+(G3k+G2k)×h)×b=0.9×1.35×(0.5+(1.1+24)×0.25)×0.3=2.469kN/m

q1活=0.9×1.4×Q1k×b=0.9×1.4×1.5×0.3=0.567kN/m

q2=(G1k+(G3k+G2k)×h)×b=(0.5+(1.1+24)×0.25)×0.3=2.033kN/m

按四跨连续梁,Rmax=(1.143q1静+1.223q1活)L=1.143×2.469×0.9+1.223×0.567×0.9=3.164kN

按悬臂梁,R1=q1l=2.866×0.25=0.717kN

R=max[Rmax,R1]=3.164kN;

按四跨连续梁,Rmax=1.143q2L=1.143×2.033×0.9=2.091kN

按悬臂梁,R1=q2l=2.033×0.25=0.508kN

R=max[Rmax,R1]=2.091kN;

主梁弯矩图(kN·m)

Mmax=0.843kN·m

σ=Mmax/W=0.843×106/5080=165.905N/mm2≤[f]=205N/mm2

Vmax=6.56kN

τmax=2Vmax/A=2×6.56×1000/489=26.831N/mm2≤[τ]=125N/mm2

νmax=1.016mm

跨中νmax=1.016mm≤[ν]=900/250=3.6mm

悬挑段νmax=0.888mm≤[ν]=250/250=1mm

立杆顶部步距hd(mm)

立杆伸出顶层水平杆中心线至支撑点的长度a(mm)

顶部立杆计算长度系数μ1

非顶部立杆计算长度系数μ2

立柱截面面积A(mm2)

立柱截面回转半径i(mm)

立柱截面抵抗矩W(cm3)

顶部立杆段:l01=kμ1(hd+2a)=1×1.386×(1500+2×200)=2633.4mm

非顶部立杆段:l02=kμ2h=1×1.755×1800=3159mm

λ=l0/i=3159/15.9=198.679≤[λ]=210

顶部立杆段:l01=kμ1(hd+2a)=1.155×1.386×(1500+2×200)=3041.577mm

λ1=l01/i=3041.577/15.9=191.294,查表得,φ1=0.197

Mw=0.9×1.4ωklah2/10=0.9×1.4×0.22×0.9×1.82/10=0.079kN·m

Nw=1.2ΣNGik+0.9×1.4Σ(NQik+Mw/lb)=[1.2×(0.5+(24+1.1)×0.25)+0.9×1.4×1]×0.9×0.9+0.9×1.4×0.079/0.9=7.717kN

f=Nw/(φA)+Mw/W=7717.007/(0.197×424)+0.079×106/4490=110.064N/mm2≤[f]=205N/mm2

非顶部立杆段:l02=kμ2h=1.155×1.755×1800=3648.645mm

λ2=l02/i=3648.645/15.9=229.475,查表得,φ2=0.139

Mw=0.9×1.4ωklah2/10=0.9×1.4×0.22×0.9×1.82/10=0.079kN·m

Nw=1.2ΣNGik+0.9×1.4Σ(NQik+Mw/lb)=[1.2×(0.75+(24+1.1)×0.25)+0.9×1.4×1]×0.9×0.9+0.9×1.4×0.079/0.9=7.96kN

f=Nw/(φA)+Mw/W=7960.007/(0.139×424)+0.079×106/4490=152.737N/mm2≤[f]=205N/mm2

可调托座承载力容许值[N](kN)

按上节计算可知,可调托座受力N=7.717kN≤[N]=30kN

模板设计剖面图(楼板长向)

模板设计剖面图(楼板宽向)

面板抗弯强度设计值[f](N/mm2)

面板弹性模量E(N/mm2)

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=1000×15×15/6=37500mm3,I=bh3/12=1000×15×15×15/12=281250mm4

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)×0.2)+1.4×2.5,1.35×(0.1+(1.1+24)×0.2)+1.4×0.7×2.5]×1=8.68kN/m

q2=0.9×1.2×G1k×b=0.9×1.2×0.1×1=0.108kN/m

p=0.9×1.4×Q1K=0.9×1.4×2.5=3.15kN

Mmax=max[q1l2/8,q2l2/8+pl/4]=max[8.68×0.32/8,0.108×0.32/8+3.15×0.3/4]=0.237kN·m

σ=Mmax/W=0.237×106/37500=6.332N/mm2≤[f]=15N/mm2

q=(G1k+(G3k+G2k)×h)×b=(0.1+(1.1+24)×0.2)×1=5.12kN/m

ν=5ql4/(384EI)=5×5.12×3004/(384×10000×281250)=0.192mm≤[ν]=l/250=300/250=1.2mm

小梁抗弯强度设计值[f](N/mm2)

小梁抗剪强度设计值[τ](N/mm2)

小梁弹性模量E(N/mm2)

小梁截面抵抗矩W(cm3)

小梁截面惯性矩I(cm4)

因[B/lb]取整=[4200/900]取整=4,按四等跨连续梁计算,又因小梁较大悬挑长度为250mm,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)×0.2)+1.4×2.5,1.35×(0.3+(1.1+24)×0.2)+1.4×0.7×2.5]×0.3=2.669kN/m

因此,q1静=0.9×1.2(G1k+(G3k+G2k)×h)×b=0.9×1.2×(0.3+(1.1+24)×0.2)×0.3=1.724kN/m

q1活=0.9×1.4×Q1k×b=0.9×1.4×2.5×0.3=0.945kN/m

M1=0.107q1静L2+0.121q1活L2=0.107×1.724×0.92+0.121×0.945×0.92=0.242kN·m

q2=0.9×1.2×G1k×b=0.9×1.2×0.3×0.3=0.097kN/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[0.077×0.097×0.92+0.21×3.15×0.9,0.107×0.097×0.92+0.181×3.15×0.9]=0.601kN·m

M3=max[q1L12/2,q2L12/2+pL1]=max[2.669×0.252/2,0.097×0.252/2+3.15×0.25]=0.791kN·m

Mmax=max[M1,M2,M3]=max[0.242,0.601,0.791]=0.791kN·m

σ=Mmax/W=0.791×106/64000=12.352N/mm2≤[f]=15.44N/mm2

V1=0.607q1静L+0.62q1活L=0.607×1.724×0.9+0.62×0.945×0.9=1.469kN

V2=0.607q2L+0.681p=0.607×0.097×0.9+0.681×3.15=2.198kN

V3=max[q1L1,q2L1+p]=max[2.669×0.25,0.097×0.25+3.15]=3.174kN

Vmax=max[V1,V2,V3]=max[1.469,2.198,3.174]=3.174kN

τmax=3Vmax/(2bh0)=3×3.174×1000/(2×80×60)=0.992N/mm2≤[τ]=1.78N/mm2

q=(G1k+(G3k+G2k)×h)×b=(0.3+(24+1.1)×0.2)×0.3=1.596kN/m

跨中νmax=0.632qL4/(100EI)=0.632×1.596×9004/(100×9350×2560000)=0.276mm≤[ν]=l/250=900/250=3.6mm

悬臂端νmax=qL4/(8EI)=1.596×2504/(8×9350×2560000)=0.033mm≤[ν]=l1/250=250/250=1mm

主梁弹性模量E(N/mm2)

主梁抗弯强度设计值[f](N/mm2)

主梁抗剪强度设计值[τ](N/mm2)

主梁截面惯性矩I(cm4)

主梁截面抵抗矩W(cm3)

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)×0.2)+1.4×1.5,1.35×(0.5+(1.1+24)×0.2)+1.4×0.7×1.5]×0.3=2.409kN/m

q1静=0.9×1.35(G1k+(G3k+G2k)×h)×b=0.9×1.35×(0.5+(1.1+24)×0.2)×0.3=2.012kN/m

q1活=0.9×1.4×Q1k×b=0.9×1.4×1.5×0.3=0.567kN/m

q2=(G1k+(G3k+G2k)×h)×b=(0.5+(1.1+24)×0.2)×0.3=1.656kN/m

按四跨连续梁,Rmax=(1.143q1静+1.223q1活)L=1.143×2.012×0.9+1.223×0.567×0.9=2.694kN

按悬臂梁,R1=q1l=2.409×0.25=0.602kN

R=max[Rmax,R1]=2.694kN;

按四跨连续梁,Rmax=1.143q2L=1.143×1.656×0.9=1.704kN

按悬臂梁,R1=q2l=1.656×0.25=0.414kN

R=max[Rmax,R1]=1.704kN;

主梁弯矩图(kN·m)

Mmax=0.718kN·m

σ=Mmax/W=0.718×106/5080=141.261N/mm2≤[f]=205N/mm2

Vmax=5.586kN

τmax=2Vmax/A=2×5.586×1000/489=22.846N/mm2≤[τ]=125N/mm2

νmax=0.828mm

跨中νmax=0.828mm≤[ν]=900/250=3.6mm

悬挑段νmax=0.723mm≤[ν]=250/250=1mm

立杆顶部步距hd(mm)

立杆伸出顶层水平杆中心线至支撑点的长度a(mm)

顶部立杆计算长度系数μ1

非顶部立杆计算长度系数μ2

立柱截面面积A(mm2)

立柱截面回转半径i(mm)

立柱截面抵抗矩W(cm3)

顶部立杆段:l01=kμ1(hd+2a)=1×1.386×(1500+2×200)=2633.4mm

非顶部立杆段:l02=kμ2h=1×1.755×1800=3159mm

λ=l0/i=3159/15.9=198.679≤[λ]=210

顶部立杆段:l01=kμ1(hd+2a)=1.155×1.386×(1500+2×200)=3041.577mm

λ1=l01/i=3041.577/15.9=191.294,查表得,φ1=0.197

Mw=0.9×1.4ωklah2/10=0.9×1.4×0.22×0.9×1.82/10=0.079kN·m

SL 692-2014 小型水电站监控保护设备应用导则(清晰无水印)Nw=1.2ΣNGik+0.9×1.4Σ(NQik+Mw/lb)=[1.2×(0.5+(24+1.1)×0.2)+0.9×1.4×1]×0.9×0.9+0.9×1.4×0.079/0.9=6.497kN

f=Nw/(φA)+Mw/W=6497.147/(0.197×424)+0.079×106/4490=95.459N/mm2≤[f]=205N/mm2

非顶部立杆段:l02=kμ2h=1.155×1.755×1800=3648.645mm

λ2=l02/i=3648.645/15.9=229.475,查表得,φ2=0.139

Mw=0.9×1.4ωklah2/10=0.9×1.4×0.22×0.9×1.82/10=0.079kN·m

Nw=1.2ΣNGik+0.9×1.4Σ(NQik+Mw/lb)=[1.2×(0.75+(24+1.1)×0.2)+0.9×1.4×1]×0.9×0.9+0.9×1.4×0.079/0.9=6.74kN

浆砌石护坡施工方案1f=Nw/(φA)+Mw/W=6740.147/(0.139×424)+0.079×106/4490=132.039N/mm2≤[f]=205N/mm2

可调托座承载力容许值[N](kN)

按上节计算可知,可调托座受力N=6.497kN≤[N]=30kN

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